xref: /titanic_44/usr/src/cmd/ztest/ztest.c (revision 5002558f6bfef3915c7f3b4ecb7c19c7f044bf5b)
1fa9e4066Sahrens /*
2fa9e4066Sahrens  * CDDL HEADER START
3fa9e4066Sahrens  *
4fa9e4066Sahrens  * The contents of this file are subject to the terms of the
5441d80aaSlling  * Common Development and Distribution License (the "License").
6441d80aaSlling  * You may not use this file except in compliance with the License.
7fa9e4066Sahrens  *
8fa9e4066Sahrens  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9fa9e4066Sahrens  * or http://www.opensolaris.org/os/licensing.
10fa9e4066Sahrens  * See the License for the specific language governing permissions
11fa9e4066Sahrens  * and limitations under the License.
12fa9e4066Sahrens  *
13fa9e4066Sahrens  * When distributing Covered Code, include this CDDL HEADER in each
14fa9e4066Sahrens  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15fa9e4066Sahrens  * If applicable, add the following below this CDDL HEADER, with the
16fa9e4066Sahrens  * fields enclosed by brackets "[]" replaced with your own identifying
17fa9e4066Sahrens  * information: Portions Copyright [yyyy] [name of copyright owner]
18fa9e4066Sahrens  *
19fa9e4066Sahrens  * CDDL HEADER END
20fa9e4066Sahrens  */
21fa9e4066Sahrens /*
2247cb52daSJeff Bonwick  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23fa9e4066Sahrens  */
24fa9e4066Sahrens 
25fa9e4066Sahrens /*
26fa9e4066Sahrens  * The objective of this program is to provide a DMU/ZAP/SPA stress test
27fa9e4066Sahrens  * that runs entirely in userland, is easy to use, and easy to extend.
28fa9e4066Sahrens  *
29fa9e4066Sahrens  * The overall design of the ztest program is as follows:
30fa9e4066Sahrens  *
31fa9e4066Sahrens  * (1) For each major functional area (e.g. adding vdevs to a pool,
32fa9e4066Sahrens  *     creating and destroying datasets, reading and writing objects, etc)
33fa9e4066Sahrens  *     we have a simple routine to test that functionality.  These
34fa9e4066Sahrens  *     individual routines do not have to do anything "stressful".
35fa9e4066Sahrens  *
36fa9e4066Sahrens  * (2) We turn these simple functionality tests into a stress test by
37fa9e4066Sahrens  *     running them all in parallel, with as many threads as desired,
38fa9e4066Sahrens  *     and spread across as many datasets, objects, and vdevs as desired.
39fa9e4066Sahrens  *
40fa9e4066Sahrens  * (3) While all this is happening, we inject faults into the pool to
41fa9e4066Sahrens  *     verify that self-healing data really works.
42fa9e4066Sahrens  *
43fa9e4066Sahrens  * (4) Every time we open a dataset, we change its checksum and compression
44fa9e4066Sahrens  *     functions.  Thus even individual objects vary from block to block
45fa9e4066Sahrens  *     in which checksum they use and whether they're compressed.
46fa9e4066Sahrens  *
47fa9e4066Sahrens  * (5) To verify that we never lose on-disk consistency after a crash,
48fa9e4066Sahrens  *     we run the entire test in a child of the main process.
49fa9e4066Sahrens  *     At random times, the child self-immolates with a SIGKILL.
50fa9e4066Sahrens  *     This is the software equivalent of pulling the power cord.
51fa9e4066Sahrens  *     The parent then runs the test again, using the existing
52fa9e4066Sahrens  *     storage pool, as many times as desired.
53fa9e4066Sahrens  *
54fa9e4066Sahrens  * (6) To verify that we don't have future leaks or temporal incursions,
55fa9e4066Sahrens  *     many of the functional tests record the transaction group number
56fa9e4066Sahrens  *     as part of their data.  When reading old data, they verify that
57fa9e4066Sahrens  *     the transaction group number is less than the current, open txg.
58fa9e4066Sahrens  *     If you add a new test, please do this if applicable.
59fa9e4066Sahrens  *
60fa9e4066Sahrens  * When run with no arguments, ztest runs for about five minutes and
61fa9e4066Sahrens  * produces no output if successful.  To get a little bit of information,
62fa9e4066Sahrens  * specify -V.  To get more information, specify -VV, and so on.
63fa9e4066Sahrens  *
64fa9e4066Sahrens  * To turn this into an overnight stress test, use -T to specify run time.
65fa9e4066Sahrens  *
66fa9e4066Sahrens  * You can ask more more vdevs [-v], datasets [-d], or threads [-t]
67fa9e4066Sahrens  * to increase the pool capacity, fanout, and overall stress level.
68fa9e4066Sahrens  *
69fa9e4066Sahrens  * The -N(okill) option will suppress kills, so each child runs to completion.
70fa9e4066Sahrens  * This can be useful when you're trying to distinguish temporal incursions
71fa9e4066Sahrens  * from plain old race conditions.
72fa9e4066Sahrens  */
73fa9e4066Sahrens 
74fa9e4066Sahrens #include <sys/zfs_context.h>
75fa9e4066Sahrens #include <sys/spa.h>
76fa9e4066Sahrens #include <sys/dmu.h>
77fa9e4066Sahrens #include <sys/txg.h>
782fdbea25SAleksandr Guzovskiy #include <sys/dbuf.h>
79fa9e4066Sahrens #include <sys/zap.h>
80fa9e4066Sahrens #include <sys/dmu_objset.h>
81fa9e4066Sahrens #include <sys/poll.h>
82fa9e4066Sahrens #include <sys/stat.h>
83fa9e4066Sahrens #include <sys/time.h>
84fa9e4066Sahrens #include <sys/wait.h>
85fa9e4066Sahrens #include <sys/mman.h>
86fa9e4066Sahrens #include <sys/resource.h>
87fa9e4066Sahrens #include <sys/zio.h>
88fa9e4066Sahrens #include <sys/zil.h>
89b24ab676SJeff Bonwick #include <sys/zil_impl.h>
90fa9e4066Sahrens #include <sys/vdev_impl.h>
91e14bb325SJeff Bonwick #include <sys/vdev_file.h>
92fa9e4066Sahrens #include <sys/spa_impl.h>
9388ecc943SGeorge Wilson #include <sys/metaslab_impl.h>
94fa9e4066Sahrens #include <sys/dsl_prop.h>
954f5064b7SMark J Musante #include <sys/dsl_dataset.h>
963f9d6ad7SLin Ling #include <sys/dsl_scan.h>
97cde58dbcSMatthew Ahrens #include <sys/zio_checksum.h>
98fa9e4066Sahrens #include <sys/refcount.h>
99fa9e4066Sahrens #include <stdio.h>
100004388ebScasper #include <stdio_ext.h>
101fa9e4066Sahrens #include <stdlib.h>
102fa9e4066Sahrens #include <unistd.h>
103fa9e4066Sahrens #include <signal.h>
104fa9e4066Sahrens #include <umem.h>
105fa9e4066Sahrens #include <dlfcn.h>
106fa9e4066Sahrens #include <ctype.h>
107fa9e4066Sahrens #include <math.h>
108fa9e4066Sahrens #include <sys/fs/zfs.h>
109b24ab676SJeff Bonwick #include <libnvpair.h>
110fa9e4066Sahrens 
111fa9e4066Sahrens static char cmdname[] = "ztest";
112fa9e4066Sahrens static char *zopt_pool = cmdname;
113fa9e4066Sahrens 
114fa9e4066Sahrens static uint64_t zopt_vdevs = 5;
115fa9e4066Sahrens static uint64_t zopt_vdevtime;
116ecc2d604Sbonwick static int zopt_ashift = SPA_MINBLOCKSHIFT;
117fa9e4066Sahrens static int zopt_mirrors = 2;
118fa9e4066Sahrens static int zopt_raidz = 4;
11999653d4eSeschrock static int zopt_raidz_parity = 1;
120fa9e4066Sahrens static size_t zopt_vdev_size = SPA_MINDEVSIZE;
121ecc2d604Sbonwick static int zopt_datasets = 7;
122fa9e4066Sahrens static int zopt_threads = 23;
123fa9e4066Sahrens static uint64_t zopt_passtime = 60;	/* 60 seconds */
124fa9e4066Sahrens static uint64_t zopt_killrate = 70;	/* 70% kill rate */
125fa9e4066Sahrens static int zopt_verbose = 0;
126fa9e4066Sahrens static int zopt_init = 1;
127fa9e4066Sahrens static char *zopt_dir = "/tmp";
128fa9e4066Sahrens static uint64_t zopt_time = 300;	/* 5 minutes */
1292215e990SMark J Musante static uint64_t zopt_maxloops = 50;	/* max loops during spa_freeze() */
130fa9e4066Sahrens 
131b24ab676SJeff Bonwick #define	BT_MAGIC	0x123456789abcdefULL
1321195e687SMark J Musante #define	MAXFAULTS() (MAX(zs->zs_mirrors, 1) * (zopt_raidz_parity + 1) - 1)
133b24ab676SJeff Bonwick 
134b24ab676SJeff Bonwick enum ztest_io_type {
135b24ab676SJeff Bonwick 	ZTEST_IO_WRITE_TAG,
136b24ab676SJeff Bonwick 	ZTEST_IO_WRITE_PATTERN,
137b24ab676SJeff Bonwick 	ZTEST_IO_WRITE_ZEROES,
138b24ab676SJeff Bonwick 	ZTEST_IO_TRUNCATE,
139b24ab676SJeff Bonwick 	ZTEST_IO_SETATTR,
140b24ab676SJeff Bonwick 	ZTEST_IO_TYPES
141b24ab676SJeff Bonwick };
142b24ab676SJeff Bonwick 
143e05725b1Sbonwick typedef struct ztest_block_tag {
144b24ab676SJeff Bonwick 	uint64_t	bt_magic;
145e05725b1Sbonwick 	uint64_t	bt_objset;
146e05725b1Sbonwick 	uint64_t	bt_object;
147e05725b1Sbonwick 	uint64_t	bt_offset;
148b24ab676SJeff Bonwick 	uint64_t	bt_gen;
149e05725b1Sbonwick 	uint64_t	bt_txg;
150b24ab676SJeff Bonwick 	uint64_t	bt_crtxg;
151e05725b1Sbonwick } ztest_block_tag_t;
152e05725b1Sbonwick 
153b24ab676SJeff Bonwick typedef struct bufwad {
154b24ab676SJeff Bonwick 	uint64_t	bw_index;
155b24ab676SJeff Bonwick 	uint64_t	bw_txg;
156b24ab676SJeff Bonwick 	uint64_t	bw_data;
157b24ab676SJeff Bonwick } bufwad_t;
158fa9e4066Sahrens 
159fa9e4066Sahrens /*
160b24ab676SJeff Bonwick  * XXX -- fix zfs range locks to be generic so we can use them here.
161fa9e4066Sahrens  */
162b24ab676SJeff Bonwick typedef enum {
163b24ab676SJeff Bonwick 	RL_READER,
164b24ab676SJeff Bonwick 	RL_WRITER,
165b24ab676SJeff Bonwick 	RL_APPEND
166b24ab676SJeff Bonwick } rl_type_t;
167b24ab676SJeff Bonwick 
168b24ab676SJeff Bonwick typedef struct rll {
169b24ab676SJeff Bonwick 	void		*rll_writer;
170b24ab676SJeff Bonwick 	int		rll_readers;
171b24ab676SJeff Bonwick 	mutex_t		rll_lock;
172b24ab676SJeff Bonwick 	cond_t		rll_cv;
173b24ab676SJeff Bonwick } rll_t;
174b24ab676SJeff Bonwick 
175b24ab676SJeff Bonwick typedef struct rl {
176b24ab676SJeff Bonwick 	uint64_t	rl_object;
177b24ab676SJeff Bonwick 	uint64_t	rl_offset;
178b24ab676SJeff Bonwick 	uint64_t	rl_size;
179b24ab676SJeff Bonwick 	rll_t		*rl_lock;
180b24ab676SJeff Bonwick } rl_t;
181b24ab676SJeff Bonwick 
182b24ab676SJeff Bonwick #define	ZTEST_RANGE_LOCKS	64
183b24ab676SJeff Bonwick #define	ZTEST_OBJECT_LOCKS	64
184b24ab676SJeff Bonwick 
185b24ab676SJeff Bonwick /*
186b24ab676SJeff Bonwick  * Object descriptor.  Used as a template for object lookup/create/remove.
187b24ab676SJeff Bonwick  */
188b24ab676SJeff Bonwick typedef struct ztest_od {
189b24ab676SJeff Bonwick 	uint64_t	od_dir;
190b24ab676SJeff Bonwick 	uint64_t	od_object;
191b24ab676SJeff Bonwick 	dmu_object_type_t od_type;
192b24ab676SJeff Bonwick 	dmu_object_type_t od_crtype;
193b24ab676SJeff Bonwick 	uint64_t	od_blocksize;
194b24ab676SJeff Bonwick 	uint64_t	od_crblocksize;
195b24ab676SJeff Bonwick 	uint64_t	od_gen;
196b24ab676SJeff Bonwick 	uint64_t	od_crgen;
197b24ab676SJeff Bonwick 	char		od_name[MAXNAMELEN];
198b24ab676SJeff Bonwick } ztest_od_t;
199b24ab676SJeff Bonwick 
200b24ab676SJeff Bonwick /*
201b24ab676SJeff Bonwick  * Per-dataset state.
202b24ab676SJeff Bonwick  */
203b24ab676SJeff Bonwick typedef struct ztest_ds {
204b24ab676SJeff Bonwick 	objset_t	*zd_os;
205b24ab676SJeff Bonwick 	zilog_t		*zd_zilog;
206b24ab676SJeff Bonwick 	uint64_t	zd_seq;
207b24ab676SJeff Bonwick 	ztest_od_t	*zd_od;		/* debugging aid */
208b24ab676SJeff Bonwick 	char		zd_name[MAXNAMELEN];
209b24ab676SJeff Bonwick 	mutex_t		zd_dirobj_lock;
210b24ab676SJeff Bonwick 	rll_t		zd_object_lock[ZTEST_OBJECT_LOCKS];
211b24ab676SJeff Bonwick 	rll_t		zd_range_lock[ZTEST_RANGE_LOCKS];
212b24ab676SJeff Bonwick } ztest_ds_t;
213b24ab676SJeff Bonwick 
214b24ab676SJeff Bonwick /*
215b24ab676SJeff Bonwick  * Per-iteration state.
216b24ab676SJeff Bonwick  */
217b24ab676SJeff Bonwick typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id);
218fa9e4066Sahrens 
219fa9e4066Sahrens typedef struct ztest_info {
220fa9e4066Sahrens 	ztest_func_t	*zi_func;	/* test function */
221e05725b1Sbonwick 	uint64_t	zi_iters;	/* iterations per execution */
222fa9e4066Sahrens 	uint64_t	*zi_interval;	/* execute every <interval> seconds */
223b24ab676SJeff Bonwick 	uint64_t	zi_call_count;	/* per-pass count */
224fa9e4066Sahrens 	uint64_t	zi_call_time;	/* per-pass time */
225b24ab676SJeff Bonwick 	uint64_t	zi_call_next;	/* next time to call this function */
226fa9e4066Sahrens } ztest_info_t;
227fa9e4066Sahrens 
228b24ab676SJeff Bonwick /*
229b24ab676SJeff Bonwick  * Note: these aren't static because we want dladdr() to work.
230b24ab676SJeff Bonwick  */
231b24ab676SJeff Bonwick ztest_func_t ztest_dmu_read_write;
232b24ab676SJeff Bonwick ztest_func_t ztest_dmu_write_parallel;
233b24ab676SJeff Bonwick ztest_func_t ztest_dmu_object_alloc_free;
234b24ab676SJeff Bonwick ztest_func_t ztest_dmu_commit_callbacks;
235b24ab676SJeff Bonwick ztest_func_t ztest_zap;
236b24ab676SJeff Bonwick ztest_func_t ztest_zap_parallel;
237b24ab676SJeff Bonwick ztest_func_t ztest_zil_commit;
238b24ab676SJeff Bonwick ztest_func_t ztest_dmu_read_write_zcopy;
239b24ab676SJeff Bonwick ztest_func_t ztest_dmu_objset_create_destroy;
240b24ab676SJeff Bonwick ztest_func_t ztest_dmu_prealloc;
241b24ab676SJeff Bonwick ztest_func_t ztest_fzap;
242b24ab676SJeff Bonwick ztest_func_t ztest_dmu_snapshot_create_destroy;
243b24ab676SJeff Bonwick ztest_func_t ztest_dsl_prop_get_set;
244b24ab676SJeff Bonwick ztest_func_t ztest_spa_prop_get_set;
245b24ab676SJeff Bonwick ztest_func_t ztest_spa_create_destroy;
246b24ab676SJeff Bonwick ztest_func_t ztest_fault_inject;
247b24ab676SJeff Bonwick ztest_func_t ztest_ddt_repair;
248b24ab676SJeff Bonwick ztest_func_t ztest_dmu_snapshot_hold;
249b24ab676SJeff Bonwick ztest_func_t ztest_spa_rename;
250b24ab676SJeff Bonwick ztest_func_t ztest_scrub;
251b24ab676SJeff Bonwick ztest_func_t ztest_dsl_dataset_promote_busy;
252b24ab676SJeff Bonwick ztest_func_t ztest_vdev_attach_detach;
253b24ab676SJeff Bonwick ztest_func_t ztest_vdev_LUN_growth;
254b24ab676SJeff Bonwick ztest_func_t ztest_vdev_add_remove;
255b24ab676SJeff Bonwick ztest_func_t ztest_vdev_aux_add_remove;
2561195e687SMark J Musante ztest_func_t ztest_split_pool;
257b24ab676SJeff Bonwick 
258b24ab676SJeff Bonwick uint64_t zopt_always = 0ULL * NANOSEC;		/* all the time */
259b24ab676SJeff Bonwick uint64_t zopt_incessant = 1ULL * NANOSEC / 10;	/* every 1/10 second */
260b24ab676SJeff Bonwick uint64_t zopt_often = 1ULL * NANOSEC;		/* every second */
261b24ab676SJeff Bonwick uint64_t zopt_sometimes = 10ULL * NANOSEC;	/* every 10 seconds */
262b24ab676SJeff Bonwick uint64_t zopt_rarely = 60ULL * NANOSEC;		/* every 60 seconds */
263fa9e4066Sahrens 
264fa9e4066Sahrens ztest_info_t ztest_info[] = {
265e05725b1Sbonwick 	{ ztest_dmu_read_write,			1,	&zopt_always	},
266b24ab676SJeff Bonwick 	{ ztest_dmu_write_parallel,		10,	&zopt_always	},
267e05725b1Sbonwick 	{ ztest_dmu_object_alloc_free,		1,	&zopt_always	},
268b24ab676SJeff Bonwick 	{ ztest_dmu_commit_callbacks,		1,	&zopt_always	},
269e05725b1Sbonwick 	{ ztest_zap,				30,	&zopt_always	},
270e05725b1Sbonwick 	{ ztest_zap_parallel,			100,	&zopt_always	},
2711195e687SMark J Musante 	{ ztest_split_pool,			1,	&zopt_always	},
272b24ab676SJeff Bonwick 	{ ztest_zil_commit,			1,	&zopt_incessant	},
273b24ab676SJeff Bonwick 	{ ztest_dmu_read_write_zcopy,		1,	&zopt_often	},
274b24ab676SJeff Bonwick 	{ ztest_dmu_objset_create_destroy,	1,	&zopt_often	},
275b24ab676SJeff Bonwick 	{ ztest_dsl_prop_get_set,		1,	&zopt_often	},
276b24ab676SJeff Bonwick 	{ ztest_spa_prop_get_set,		1,	&zopt_sometimes	},
277b24ab676SJeff Bonwick #if 0
278b24ab676SJeff Bonwick 	{ ztest_dmu_prealloc,			1,	&zopt_sometimes	},
279b24ab676SJeff Bonwick #endif
280b24ab676SJeff Bonwick 	{ ztest_fzap,				1,	&zopt_sometimes	},
281e14bb325SJeff Bonwick 	{ ztest_dmu_snapshot_create_destroy,	1,	&zopt_sometimes	},
282e05725b1Sbonwick 	{ ztest_spa_create_destroy,		1,	&zopt_sometimes	},
283e05725b1Sbonwick 	{ ztest_fault_inject,			1,	&zopt_sometimes	},
284b24ab676SJeff Bonwick 	{ ztest_ddt_repair,			1,	&zopt_sometimes	},
2855c987a37SChris Kirby 	{ ztest_dmu_snapshot_hold,		1,	&zopt_sometimes	},
286e05725b1Sbonwick 	{ ztest_spa_rename,			1,	&zopt_rarely	},
287b24ab676SJeff Bonwick 	{ ztest_scrub,				1,	&zopt_rarely	},
288b24ab676SJeff Bonwick 	{ ztest_dsl_dataset_promote_busy,	1,	&zopt_rarely	},
289e05725b1Sbonwick 	{ ztest_vdev_attach_detach,		1,	&zopt_rarely },
290e05725b1Sbonwick 	{ ztest_vdev_LUN_growth,		1,	&zopt_rarely	},
291e05725b1Sbonwick 	{ ztest_vdev_add_remove,		1,	&zopt_vdevtime },
292e14bb325SJeff Bonwick 	{ ztest_vdev_aux_add_remove,		1,	&zopt_vdevtime	},
293fa9e4066Sahrens };
294fa9e4066Sahrens 
295fa9e4066Sahrens #define	ZTEST_FUNCS	(sizeof (ztest_info) / sizeof (ztest_info_t))
296fa9e4066Sahrens 
297fa9e4066Sahrens /*
298d20e665cSRicardo M. Correia  * The following struct is used to hold a list of uncalled commit callbacks.
299d20e665cSRicardo M. Correia  * The callbacks are ordered by txg number.
300d20e665cSRicardo M. Correia  */
301d20e665cSRicardo M. Correia typedef struct ztest_cb_list {
302d20e665cSRicardo M. Correia 	mutex_t	zcl_callbacks_lock;
303d20e665cSRicardo M. Correia 	list_t	zcl_callbacks;
304d20e665cSRicardo M. Correia } ztest_cb_list_t;
305d20e665cSRicardo M. Correia 
306d20e665cSRicardo M. Correia /*
307fa9e4066Sahrens  * Stuff we need to share writably between parent and child.
308fa9e4066Sahrens  */
309fa9e4066Sahrens typedef struct ztest_shared {
310b24ab676SJeff Bonwick 	char		*zs_pool;
311b24ab676SJeff Bonwick 	spa_t		*zs_spa;
312b24ab676SJeff Bonwick 	hrtime_t	zs_proc_start;
313b24ab676SJeff Bonwick 	hrtime_t	zs_proc_stop;
314b24ab676SJeff Bonwick 	hrtime_t	zs_thread_start;
315b24ab676SJeff Bonwick 	hrtime_t	zs_thread_stop;
316b24ab676SJeff Bonwick 	hrtime_t	zs_thread_kill;
317b24ab676SJeff Bonwick 	uint64_t	zs_enospc_count;
31888ecc943SGeorge Wilson 	uint64_t	zs_vdev_next_leaf;
319e14bb325SJeff Bonwick 	uint64_t	zs_vdev_aux;
320fa9e4066Sahrens 	uint64_t	zs_alloc;
321fa9e4066Sahrens 	uint64_t	zs_space;
322b24ab676SJeff Bonwick 	mutex_t		zs_vdev_lock;
323b24ab676SJeff Bonwick 	rwlock_t	zs_name_lock;
324fa9e4066Sahrens 	ztest_info_t	zs_info[ZTEST_FUNCS];
3251195e687SMark J Musante 	uint64_t	zs_splits;
3261195e687SMark J Musante 	uint64_t	zs_mirrors;
327b24ab676SJeff Bonwick 	ztest_ds_t	zs_zd[];
328fa9e4066Sahrens } ztest_shared_t;
329fa9e4066Sahrens 
330b24ab676SJeff Bonwick #define	ID_PARALLEL	-1ULL
331b24ab676SJeff Bonwick 
332fa9e4066Sahrens static char ztest_dev_template[] = "%s/%s.%llua";
333e14bb325SJeff Bonwick static char ztest_aux_template[] = "%s/%s.%s.%llu";
334b24ab676SJeff Bonwick ztest_shared_t *ztest_shared;
335b24ab676SJeff Bonwick uint64_t *ztest_seq;
336fa9e4066Sahrens 
337fa9e4066Sahrens static int ztest_random_fd;
338fa9e4066Sahrens static int ztest_dump_core = 1;
339fa9e4066Sahrens 
340e14bb325SJeff Bonwick static boolean_t ztest_exiting;
3410a4e9518Sgw25295 
342d20e665cSRicardo M. Correia /* Global commit callback list */
343d20e665cSRicardo M. Correia static ztest_cb_list_t zcl;
344d20e665cSRicardo M. Correia 
345e05725b1Sbonwick extern uint64_t metaslab_gang_bang;
346d6e555bdSGeorge Wilson extern uint64_t metaslab_df_alloc_threshold;
347b24ab676SJeff Bonwick static uint64_t metaslab_sz;
348fa9e4066Sahrens 
349b24ab676SJeff Bonwick enum ztest_object {
350b24ab676SJeff Bonwick 	ZTEST_META_DNODE = 0,
351b24ab676SJeff Bonwick 	ZTEST_DIROBJ,
352b24ab676SJeff Bonwick 	ZTEST_OBJECTS
353b24ab676SJeff Bonwick };
354fa9e4066Sahrens 
3551ce825d8Sraf static void usage(boolean_t) __NORETURN;
356f1b4288bSvb160487 
357fa9e4066Sahrens /*
358fa9e4066Sahrens  * These libumem hooks provide a reasonable set of defaults for the allocator's
359fa9e4066Sahrens  * debugging facilities.
360fa9e4066Sahrens  */
361fa9e4066Sahrens const char *
362fa9e4066Sahrens _umem_debug_init()
363fa9e4066Sahrens {
364fa9e4066Sahrens 	return ("default,verbose"); /* $UMEM_DEBUG setting */
365fa9e4066Sahrens }
366fa9e4066Sahrens 
367fa9e4066Sahrens const char *
368fa9e4066Sahrens _umem_logging_init(void)
369fa9e4066Sahrens {
370fa9e4066Sahrens 	return ("fail,contents"); /* $UMEM_LOGGING setting */
371fa9e4066Sahrens }
372fa9e4066Sahrens 
373fa9e4066Sahrens #define	FATAL_MSG_SZ	1024
374fa9e4066Sahrens 
375fa9e4066Sahrens char *fatal_msg;
376fa9e4066Sahrens 
377fa9e4066Sahrens static void
378fa9e4066Sahrens fatal(int do_perror, char *message, ...)
379fa9e4066Sahrens {
380fa9e4066Sahrens 	va_list args;
381fa9e4066Sahrens 	int save_errno = errno;
382fa9e4066Sahrens 	char buf[FATAL_MSG_SZ];
383fa9e4066Sahrens 
384fa9e4066Sahrens 	(void) fflush(stdout);
385fa9e4066Sahrens 
386fa9e4066Sahrens 	va_start(args, message);
387fa9e4066Sahrens 	(void) sprintf(buf, "ztest: ");
388fa9e4066Sahrens 	/* LINTED */
389fa9e4066Sahrens 	(void) vsprintf(buf + strlen(buf), message, args);
390fa9e4066Sahrens 	va_end(args);
391fa9e4066Sahrens 	if (do_perror) {
392fa9e4066Sahrens 		(void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf),
393fa9e4066Sahrens 		    ": %s", strerror(save_errno));
394fa9e4066Sahrens 	}
395fa9e4066Sahrens 	(void) fprintf(stderr, "%s\n", buf);
396fa9e4066Sahrens 	fatal_msg = buf;			/* to ease debugging */
397fa9e4066Sahrens 	if (ztest_dump_core)
398fa9e4066Sahrens 		abort();
399fa9e4066Sahrens 	exit(3);
400fa9e4066Sahrens }
401fa9e4066Sahrens 
402fa9e4066Sahrens static int
403fa9e4066Sahrens str2shift(const char *buf)
404fa9e4066Sahrens {
405fa9e4066Sahrens 	const char *ends = "BKMGTPEZ";
406fa9e4066Sahrens 	int i;
407fa9e4066Sahrens 
408fa9e4066Sahrens 	if (buf[0] == '\0')
409fa9e4066Sahrens 		return (0);
410fa9e4066Sahrens 	for (i = 0; i < strlen(ends); i++) {
411fa9e4066Sahrens 		if (toupper(buf[0]) == ends[i])
412fa9e4066Sahrens 			break;
413fa9e4066Sahrens 	}
414f1b4288bSvb160487 	if (i == strlen(ends)) {
415f1b4288bSvb160487 		(void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n",
416f1b4288bSvb160487 		    buf);
417f1b4288bSvb160487 		usage(B_FALSE);
418f1b4288bSvb160487 	}
419fa9e4066Sahrens 	if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) {
420fa9e4066Sahrens 		return (10*i);
421fa9e4066Sahrens 	}
422f1b4288bSvb160487 	(void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf);
423f1b4288bSvb160487 	usage(B_FALSE);
424f1b4288bSvb160487 	/* NOTREACHED */
425fa9e4066Sahrens }
426fa9e4066Sahrens 
427fa9e4066Sahrens static uint64_t
428fa9e4066Sahrens nicenumtoull(const char *buf)
429fa9e4066Sahrens {
430fa9e4066Sahrens 	char *end;
431fa9e4066Sahrens 	uint64_t val;
432fa9e4066Sahrens 
433fa9e4066Sahrens 	val = strtoull(buf, &end, 0);
434fa9e4066Sahrens 	if (end == buf) {
435f1b4288bSvb160487 		(void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf);
436f1b4288bSvb160487 		usage(B_FALSE);
437fa9e4066Sahrens 	} else if (end[0] == '.') {
438fa9e4066Sahrens 		double fval = strtod(buf, &end);
439fa9e4066Sahrens 		fval *= pow(2, str2shift(end));
440f1b4288bSvb160487 		if (fval > UINT64_MAX) {
441f1b4288bSvb160487 			(void) fprintf(stderr, "ztest: value too large: %s\n",
442f1b4288bSvb160487 			    buf);
443f1b4288bSvb160487 			usage(B_FALSE);
444f1b4288bSvb160487 		}
445fa9e4066Sahrens 		val = (uint64_t)fval;
446fa9e4066Sahrens 	} else {
447fa9e4066Sahrens 		int shift = str2shift(end);
448f1b4288bSvb160487 		if (shift >= 64 || (val << shift) >> shift != val) {
449f1b4288bSvb160487 			(void) fprintf(stderr, "ztest: value too large: %s\n",
450f1b4288bSvb160487 			    buf);
451f1b4288bSvb160487 			usage(B_FALSE);
452f1b4288bSvb160487 		}
453fa9e4066Sahrens 		val <<= shift;
454fa9e4066Sahrens 	}
455fa9e4066Sahrens 	return (val);
456fa9e4066Sahrens }
457fa9e4066Sahrens 
458fa9e4066Sahrens static void
459f1b4288bSvb160487 usage(boolean_t requested)
460fa9e4066Sahrens {
461fa9e4066Sahrens 	char nice_vdev_size[10];
462fa9e4066Sahrens 	char nice_gang_bang[10];
463f1b4288bSvb160487 	FILE *fp = requested ? stdout : stderr;
464fa9e4066Sahrens 
465fa9e4066Sahrens 	nicenum(zopt_vdev_size, nice_vdev_size);
466e05725b1Sbonwick 	nicenum(metaslab_gang_bang, nice_gang_bang);
467fa9e4066Sahrens 
468f1b4288bSvb160487 	(void) fprintf(fp, "Usage: %s\n"
469fa9e4066Sahrens 	    "\t[-v vdevs (default: %llu)]\n"
470fa9e4066Sahrens 	    "\t[-s size_of_each_vdev (default: %s)]\n"
4712215e990SMark J Musante 	    "\t[-a alignment_shift (default: %d)] use 0 for random\n"
472fa9e4066Sahrens 	    "\t[-m mirror_copies (default: %d)]\n"
473fa9e4066Sahrens 	    "\t[-r raidz_disks (default: %d)]\n"
47499653d4eSeschrock 	    "\t[-R raidz_parity (default: %d)]\n"
475fa9e4066Sahrens 	    "\t[-d datasets (default: %d)]\n"
476fa9e4066Sahrens 	    "\t[-t threads (default: %d)]\n"
477fa9e4066Sahrens 	    "\t[-g gang_block_threshold (default: %s)]\n"
4782215e990SMark J Musante 	    "\t[-i init_count (default: %d)] initialize pool i times\n"
4792215e990SMark J Musante 	    "\t[-k kill_percentage (default: %llu%%)]\n"
480fa9e4066Sahrens 	    "\t[-p pool_name (default: %s)]\n"
4812215e990SMark J Musante 	    "\t[-f dir (default: %s)] file directory for vdev files\n"
4822215e990SMark J Musante 	    "\t[-V] verbose (use multiple times for ever more blather)\n"
4832215e990SMark J Musante 	    "\t[-E] use existing pool instead of creating new one\n"
4842215e990SMark J Musante 	    "\t[-T time (default: %llu sec)] total run time\n"
4852215e990SMark J Musante 	    "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n"
4862215e990SMark J Musante 	    "\t[-P passtime (default: %llu sec)] time per pass\n"
487f1b4288bSvb160487 	    "\t[-h] (print help)\n"
488fa9e4066Sahrens 	    "",
489fa9e4066Sahrens 	    cmdname,
490fa9e4066Sahrens 	    (u_longlong_t)zopt_vdevs,			/* -v */
491fa9e4066Sahrens 	    nice_vdev_size,				/* -s */
492ecc2d604Sbonwick 	    zopt_ashift,				/* -a */
493fa9e4066Sahrens 	    zopt_mirrors,				/* -m */
494fa9e4066Sahrens 	    zopt_raidz,					/* -r */
49599653d4eSeschrock 	    zopt_raidz_parity,				/* -R */
496ecc2d604Sbonwick 	    zopt_datasets,				/* -d */
497fa9e4066Sahrens 	    zopt_threads,				/* -t */
498fa9e4066Sahrens 	    nice_gang_bang,				/* -g */
499fa9e4066Sahrens 	    zopt_init,					/* -i */
500fa9e4066Sahrens 	    (u_longlong_t)zopt_killrate,		/* -k */
501fa9e4066Sahrens 	    zopt_pool,					/* -p */
502fa9e4066Sahrens 	    zopt_dir,					/* -f */
503fa9e4066Sahrens 	    (u_longlong_t)zopt_time,			/* -T */
5042215e990SMark J Musante 	    (u_longlong_t)zopt_maxloops,		/* -F */
505e14bb325SJeff Bonwick 	    (u_longlong_t)zopt_passtime);		/* -P */
506f1b4288bSvb160487 	exit(requested ? 0 : 1);
507fa9e4066Sahrens }
508fa9e4066Sahrens 
509fa9e4066Sahrens static void
510fa9e4066Sahrens process_options(int argc, char **argv)
511fa9e4066Sahrens {
512fa9e4066Sahrens 	int opt;
513fa9e4066Sahrens 	uint64_t value;
514fa9e4066Sahrens 
515fa9e4066Sahrens 	/* By default, test gang blocks for blocks 32K and greater */
516e05725b1Sbonwick 	metaslab_gang_bang = 32 << 10;
517fa9e4066Sahrens 
518fa9e4066Sahrens 	while ((opt = getopt(argc, argv,
5192215e990SMark J Musante 	    "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:")) != EOF) {
520fa9e4066Sahrens 		value = 0;
521fa9e4066Sahrens 		switch (opt) {
522fa9e4066Sahrens 		case 'v':
523fa9e4066Sahrens 		case 's':
524ecc2d604Sbonwick 		case 'a':
525fa9e4066Sahrens 		case 'm':
526fa9e4066Sahrens 		case 'r':
52799653d4eSeschrock 		case 'R':
528fa9e4066Sahrens 		case 'd':
529fa9e4066Sahrens 		case 't':
530fa9e4066Sahrens 		case 'g':
531fa9e4066Sahrens 		case 'i':
532fa9e4066Sahrens 		case 'k':
533fa9e4066Sahrens 		case 'T':
534fa9e4066Sahrens 		case 'P':
5352215e990SMark J Musante 		case 'F':
536fa9e4066Sahrens 			value = nicenumtoull(optarg);
537fa9e4066Sahrens 		}
538fa9e4066Sahrens 		switch (opt) {
539fa9e4066Sahrens 		case 'v':
540fa9e4066Sahrens 			zopt_vdevs = value;
541fa9e4066Sahrens 			break;
542fa9e4066Sahrens 		case 's':
543fa9e4066Sahrens 			zopt_vdev_size = MAX(SPA_MINDEVSIZE, value);
544fa9e4066Sahrens 			break;
545ecc2d604Sbonwick 		case 'a':
546ecc2d604Sbonwick 			zopt_ashift = value;
547ecc2d604Sbonwick 			break;
548fa9e4066Sahrens 		case 'm':
549fa9e4066Sahrens 			zopt_mirrors = value;
550fa9e4066Sahrens 			break;
551fa9e4066Sahrens 		case 'r':
552fa9e4066Sahrens 			zopt_raidz = MAX(1, value);
553fa9e4066Sahrens 			break;
55499653d4eSeschrock 		case 'R':
555f94275ceSAdam Leventhal 			zopt_raidz_parity = MIN(MAX(value, 1), 3);
55699653d4eSeschrock 			break;
557fa9e4066Sahrens 		case 'd':
558ecc2d604Sbonwick 			zopt_datasets = MAX(1, value);
559fa9e4066Sahrens 			break;
560fa9e4066Sahrens 		case 't':
561fa9e4066Sahrens 			zopt_threads = MAX(1, value);
562fa9e4066Sahrens 			break;
563fa9e4066Sahrens 		case 'g':
564e05725b1Sbonwick 			metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1, value);
565fa9e4066Sahrens 			break;
566fa9e4066Sahrens 		case 'i':
567fa9e4066Sahrens 			zopt_init = value;
568fa9e4066Sahrens 			break;
569fa9e4066Sahrens 		case 'k':
570fa9e4066Sahrens 			zopt_killrate = value;
571fa9e4066Sahrens 			break;
572fa9e4066Sahrens 		case 'p':
573fa9e4066Sahrens 			zopt_pool = strdup(optarg);
574fa9e4066Sahrens 			break;
575fa9e4066Sahrens 		case 'f':
576fa9e4066Sahrens 			zopt_dir = strdup(optarg);
577fa9e4066Sahrens 			break;
578fa9e4066Sahrens 		case 'V':
579fa9e4066Sahrens 			zopt_verbose++;
580fa9e4066Sahrens 			break;
581fa9e4066Sahrens 		case 'E':
582fa9e4066Sahrens 			zopt_init = 0;
583fa9e4066Sahrens 			break;
584fa9e4066Sahrens 		case 'T':
585fa9e4066Sahrens 			zopt_time = value;
586fa9e4066Sahrens 			break;
587fa9e4066Sahrens 		case 'P':
588fa9e4066Sahrens 			zopt_passtime = MAX(1, value);
589fa9e4066Sahrens 			break;
5902215e990SMark J Musante 		case 'F':
5912215e990SMark J Musante 			zopt_maxloops = MAX(1, value);
5922215e990SMark J Musante 			break;
593f1b4288bSvb160487 		case 'h':
594f1b4288bSvb160487 			usage(B_TRUE);
595f1b4288bSvb160487 			break;
596fa9e4066Sahrens 		case '?':
597fa9e4066Sahrens 		default:
598f1b4288bSvb160487 			usage(B_FALSE);
599fa9e4066Sahrens 			break;
600fa9e4066Sahrens 		}
601fa9e4066Sahrens 	}
602fa9e4066Sahrens 
60399653d4eSeschrock 	zopt_raidz_parity = MIN(zopt_raidz_parity, zopt_raidz - 1);
60499653d4eSeschrock 
605b24ab676SJeff Bonwick 	zopt_vdevtime = (zopt_vdevs > 0 ? zopt_time * NANOSEC / zopt_vdevs :
606b24ab676SJeff Bonwick 	    UINT64_MAX >> 2);
607fa9e4066Sahrens }
608fa9e4066Sahrens 
609b24ab676SJeff Bonwick static void
610b24ab676SJeff Bonwick ztest_kill(ztest_shared_t *zs)
611b24ab676SJeff Bonwick {
612b24ab676SJeff Bonwick 	zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(zs->zs_spa));
613b24ab676SJeff Bonwick 	zs->zs_space = metaslab_class_get_space(spa_normal_class(zs->zs_spa));
614b24ab676SJeff Bonwick 	(void) kill(getpid(), SIGKILL);
615b24ab676SJeff Bonwick }
616b24ab676SJeff Bonwick 
617b24ab676SJeff Bonwick static uint64_t
618b24ab676SJeff Bonwick ztest_random(uint64_t range)
619b24ab676SJeff Bonwick {
620b24ab676SJeff Bonwick 	uint64_t r;
621b24ab676SJeff Bonwick 
622b24ab676SJeff Bonwick 	if (range == 0)
623b24ab676SJeff Bonwick 		return (0);
624b24ab676SJeff Bonwick 
625b24ab676SJeff Bonwick 	if (read(ztest_random_fd, &r, sizeof (r)) != sizeof (r))
626b24ab676SJeff Bonwick 		fatal(1, "short read from /dev/urandom");
627b24ab676SJeff Bonwick 
628b24ab676SJeff Bonwick 	return (r % range);
629b24ab676SJeff Bonwick }
630b24ab676SJeff Bonwick 
631b24ab676SJeff Bonwick /* ARGSUSED */
632b24ab676SJeff Bonwick static void
633b24ab676SJeff Bonwick ztest_record_enospc(const char *s)
634b24ab676SJeff Bonwick {
635b24ab676SJeff Bonwick 	ztest_shared->zs_enospc_count++;
636b24ab676SJeff Bonwick }
637b24ab676SJeff Bonwick 
638ecc2d604Sbonwick static uint64_t
639ecc2d604Sbonwick ztest_get_ashift(void)
640ecc2d604Sbonwick {
641ecc2d604Sbonwick 	if (zopt_ashift == 0)
642ecc2d604Sbonwick 		return (SPA_MINBLOCKSHIFT + ztest_random(3));
643ecc2d604Sbonwick 	return (zopt_ashift);
644ecc2d604Sbonwick }
645ecc2d604Sbonwick 
646fa9e4066Sahrens static nvlist_t *
647e14bb325SJeff Bonwick make_vdev_file(char *path, char *aux, size_t size, uint64_t ashift)
648fa9e4066Sahrens {
649e14bb325SJeff Bonwick 	char pathbuf[MAXPATHLEN];
650fa9e4066Sahrens 	uint64_t vdev;
651fa9e4066Sahrens 	nvlist_t *file;
652fa9e4066Sahrens 
653e14bb325SJeff Bonwick 	if (ashift == 0)
654e14bb325SJeff Bonwick 		ashift = ztest_get_ashift();
655e14bb325SJeff Bonwick 
656e14bb325SJeff Bonwick 	if (path == NULL) {
657e14bb325SJeff Bonwick 		path = pathbuf;
658e14bb325SJeff Bonwick 
659e14bb325SJeff Bonwick 		if (aux != NULL) {
660e14bb325SJeff Bonwick 			vdev = ztest_shared->zs_vdev_aux;
661e14bb325SJeff Bonwick 			(void) sprintf(path, ztest_aux_template,
662e14bb325SJeff Bonwick 			    zopt_dir, zopt_pool, aux, vdev);
663fa9e4066Sahrens 		} else {
66488ecc943SGeorge Wilson 			vdev = ztest_shared->zs_vdev_next_leaf++;
665e14bb325SJeff Bonwick 			(void) sprintf(path, ztest_dev_template,
666fa9e4066Sahrens 			    zopt_dir, zopt_pool, vdev);
667e14bb325SJeff Bonwick 		}
668e14bb325SJeff Bonwick 	}
669fa9e4066Sahrens 
670e14bb325SJeff Bonwick 	if (size != 0) {
671e14bb325SJeff Bonwick 		int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
672fa9e4066Sahrens 		if (fd == -1)
673e14bb325SJeff Bonwick 			fatal(1, "can't open %s", path);
674fa9e4066Sahrens 		if (ftruncate(fd, size) != 0)
675e14bb325SJeff Bonwick 			fatal(1, "can't ftruncate %s", path);
676fa9e4066Sahrens 		(void) close(fd);
677fa9e4066Sahrens 	}
678fa9e4066Sahrens 
679fa9e4066Sahrens 	VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0);
680fa9e4066Sahrens 	VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0);
681e14bb325SJeff Bonwick 	VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0);
682ecc2d604Sbonwick 	VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0);
683fa9e4066Sahrens 
684fa9e4066Sahrens 	return (file);
685fa9e4066Sahrens }
686fa9e4066Sahrens 
687fa9e4066Sahrens static nvlist_t *
688e14bb325SJeff Bonwick make_vdev_raidz(char *path, char *aux, size_t size, uint64_t ashift, int r)
689fa9e4066Sahrens {
690fa9e4066Sahrens 	nvlist_t *raidz, **child;
691fa9e4066Sahrens 	int c;
692fa9e4066Sahrens 
693fa9e4066Sahrens 	if (r < 2)
694e14bb325SJeff Bonwick 		return (make_vdev_file(path, aux, size, ashift));
695fa9e4066Sahrens 	child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL);
696fa9e4066Sahrens 
697fa9e4066Sahrens 	for (c = 0; c < r; c++)
698e14bb325SJeff Bonwick 		child[c] = make_vdev_file(path, aux, size, ashift);
699fa9e4066Sahrens 
700fa9e4066Sahrens 	VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0);
701fa9e4066Sahrens 	VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE,
702fa9e4066Sahrens 	    VDEV_TYPE_RAIDZ) == 0);
70399653d4eSeschrock 	VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY,
70499653d4eSeschrock 	    zopt_raidz_parity) == 0);
705fa9e4066Sahrens 	VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN,
706fa9e4066Sahrens 	    child, r) == 0);
707fa9e4066Sahrens 
708fa9e4066Sahrens 	for (c = 0; c < r; c++)
709fa9e4066Sahrens 		nvlist_free(child[c]);
710fa9e4066Sahrens 
711fa9e4066Sahrens 	umem_free(child, r * sizeof (nvlist_t *));
712fa9e4066Sahrens 
713fa9e4066Sahrens 	return (raidz);
714fa9e4066Sahrens }
715fa9e4066Sahrens 
716fa9e4066Sahrens static nvlist_t *
717e14bb325SJeff Bonwick make_vdev_mirror(char *path, char *aux, size_t size, uint64_t ashift,
71831157203SJeff Bonwick 	int r, int m)
719fa9e4066Sahrens {
720fa9e4066Sahrens 	nvlist_t *mirror, **child;
721fa9e4066Sahrens 	int c;
722fa9e4066Sahrens 
723fa9e4066Sahrens 	if (m < 1)
724e14bb325SJeff Bonwick 		return (make_vdev_raidz(path, aux, size, ashift, r));
725fa9e4066Sahrens 
726fa9e4066Sahrens 	child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL);
727fa9e4066Sahrens 
728fa9e4066Sahrens 	for (c = 0; c < m; c++)
729e14bb325SJeff Bonwick 		child[c] = make_vdev_raidz(path, aux, size, ashift, r);
730fa9e4066Sahrens 
731fa9e4066Sahrens 	VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0);
732fa9e4066Sahrens 	VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE,
733fa9e4066Sahrens 	    VDEV_TYPE_MIRROR) == 0);
734fa9e4066Sahrens 	VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN,
735fa9e4066Sahrens 	    child, m) == 0);
736fa9e4066Sahrens 
737fa9e4066Sahrens 	for (c = 0; c < m; c++)
738fa9e4066Sahrens 		nvlist_free(child[c]);
739fa9e4066Sahrens 
740fa9e4066Sahrens 	umem_free(child, m * sizeof (nvlist_t *));
741fa9e4066Sahrens 
742fa9e4066Sahrens 	return (mirror);
743fa9e4066Sahrens }
744fa9e4066Sahrens 
745fa9e4066Sahrens static nvlist_t *
746e14bb325SJeff Bonwick make_vdev_root(char *path, char *aux, size_t size, uint64_t ashift,
747e14bb325SJeff Bonwick 	int log, int r, int m, int t)
748fa9e4066Sahrens {
749fa9e4066Sahrens 	nvlist_t *root, **child;
750fa9e4066Sahrens 	int c;
751fa9e4066Sahrens 
752fa9e4066Sahrens 	ASSERT(t > 0);
753fa9e4066Sahrens 
754fa9e4066Sahrens 	child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL);
755fa9e4066Sahrens 
75631157203SJeff Bonwick 	for (c = 0; c < t; c++) {
75731157203SJeff Bonwick 		child[c] = make_vdev_mirror(path, aux, size, ashift, r, m);
75831157203SJeff Bonwick 		VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
75931157203SJeff Bonwick 		    log) == 0);
76031157203SJeff Bonwick 	}
761fa9e4066Sahrens 
762fa9e4066Sahrens 	VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0);
763fa9e4066Sahrens 	VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0);
764e14bb325SJeff Bonwick 	VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN,
765fa9e4066Sahrens 	    child, t) == 0);
766fa9e4066Sahrens 
767fa9e4066Sahrens 	for (c = 0; c < t; c++)
768fa9e4066Sahrens 		nvlist_free(child[c]);
769fa9e4066Sahrens 
770fa9e4066Sahrens 	umem_free(child, t * sizeof (nvlist_t *));
771fa9e4066Sahrens 
772fa9e4066Sahrens 	return (root);
773fa9e4066Sahrens }
774fa9e4066Sahrens 
775b24ab676SJeff Bonwick static int
776b24ab676SJeff Bonwick ztest_random_blocksize(void)
777fa9e4066Sahrens {
778b24ab676SJeff Bonwick 	return (1 << (SPA_MINBLOCKSHIFT +
779b24ab676SJeff Bonwick 	    ztest_random(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)));
780fa9e4066Sahrens }
781fa9e4066Sahrens 
782b24ab676SJeff Bonwick static int
783b24ab676SJeff Bonwick ztest_random_ibshift(void)
784fa9e4066Sahrens {
785b24ab676SJeff Bonwick 	return (DN_MIN_INDBLKSHIFT +
786b24ab676SJeff Bonwick 	    ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1));
787b24ab676SJeff Bonwick }
788b24ab676SJeff Bonwick 
789b24ab676SJeff Bonwick static uint64_t
790b24ab676SJeff Bonwick ztest_random_vdev_top(spa_t *spa, boolean_t log_ok)
791b24ab676SJeff Bonwick {
792b24ab676SJeff Bonwick 	uint64_t top;
793b24ab676SJeff Bonwick 	vdev_t *rvd = spa->spa_root_vdev;
794b24ab676SJeff Bonwick 	vdev_t *tvd;
795b24ab676SJeff Bonwick 
796b24ab676SJeff Bonwick 	ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
797fa9e4066Sahrens 
798fa9e4066Sahrens 	do {
799b24ab676SJeff Bonwick 		top = ztest_random(rvd->vdev_children);
800b24ab676SJeff Bonwick 		tvd = rvd->vdev_child[top];
801b24ab676SJeff Bonwick 	} while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) ||
802b24ab676SJeff Bonwick 	    tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL);
803fa9e4066Sahrens 
804b24ab676SJeff Bonwick 	return (top);
805fa9e4066Sahrens }
806fa9e4066Sahrens 
807b24ab676SJeff Bonwick static uint64_t
808b24ab676SJeff Bonwick ztest_random_dsl_prop(zfs_prop_t prop)
809fa9e4066Sahrens {
810b24ab676SJeff Bonwick 	uint64_t value;
811b24ab676SJeff Bonwick 
812b24ab676SJeff Bonwick 	do {
813b24ab676SJeff Bonwick 		value = zfs_prop_random_value(prop, ztest_random(-1ULL));
814b24ab676SJeff Bonwick 	} while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF);
815b24ab676SJeff Bonwick 
816b24ab676SJeff Bonwick 	return (value);
817fa9e4066Sahrens }
818fa9e4066Sahrens 
819fa9e4066Sahrens static int
820b24ab676SJeff Bonwick ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value,
821b24ab676SJeff Bonwick     boolean_t inherit)
822fa9e4066Sahrens {
823b24ab676SJeff Bonwick 	const char *propname = zfs_prop_to_name(prop);
824b24ab676SJeff Bonwick 	const char *valname;
825b24ab676SJeff Bonwick 	char setpoint[MAXPATHLEN];
826b24ab676SJeff Bonwick 	uint64_t curval;
827fa9e4066Sahrens 	int error;
828fa9e4066Sahrens 
82992241e0bSTom Erickson 	error = dsl_prop_set(osname, propname,
83092241e0bSTom Erickson 	    (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL),
83192241e0bSTom Erickson 	    sizeof (value), 1, &value);
832fa9e4066Sahrens 
833b24ab676SJeff Bonwick 	if (error == ENOSPC) {
834b24ab676SJeff Bonwick 		ztest_record_enospc(FTAG);
835fa9e4066Sahrens 		return (error);
836fa9e4066Sahrens 	}
83799653d4eSeschrock 	ASSERT3U(error, ==, 0);
838fa9e4066Sahrens 
839b24ab676SJeff Bonwick 	VERIFY3U(dsl_prop_get(osname, propname, sizeof (curval),
840b24ab676SJeff Bonwick 	    1, &curval, setpoint), ==, 0);
841b24ab676SJeff Bonwick 
842b24ab676SJeff Bonwick 	if (zopt_verbose >= 6) {
843b24ab676SJeff Bonwick 		VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0);
844b24ab676SJeff Bonwick 		(void) printf("%s %s = %s at '%s'\n",
845b24ab676SJeff Bonwick 		    osname, propname, valname, setpoint);
846fa9e4066Sahrens 	}
847fa9e4066Sahrens 
848fa9e4066Sahrens 	return (error);
849fa9e4066Sahrens }
850fa9e4066Sahrens 
851fa9e4066Sahrens static int
852b24ab676SJeff Bonwick ztest_spa_prop_set_uint64(ztest_shared_t *zs, zpool_prop_t prop, uint64_t value)
853fa9e4066Sahrens {
854b24ab676SJeff Bonwick 	spa_t *spa = zs->zs_spa;
855b24ab676SJeff Bonwick 	nvlist_t *props = NULL;
856fa9e4066Sahrens 	int error;
857fa9e4066Sahrens 
858b24ab676SJeff Bonwick 	VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
859b24ab676SJeff Bonwick 	VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0);
860b24ab676SJeff Bonwick 
861b24ab676SJeff Bonwick 	error = spa_prop_set(spa, props);
862b24ab676SJeff Bonwick 
863b24ab676SJeff Bonwick 	nvlist_free(props);
864b24ab676SJeff Bonwick 
865b24ab676SJeff Bonwick 	if (error == ENOSPC) {
866b24ab676SJeff Bonwick 		ztest_record_enospc(FTAG);
867b24ab676SJeff Bonwick 		return (error);
868b24ab676SJeff Bonwick 	}
869b24ab676SJeff Bonwick 	ASSERT3U(error, ==, 0);
870b24ab676SJeff Bonwick 
871b24ab676SJeff Bonwick 	return (error);
872b24ab676SJeff Bonwick }
873b24ab676SJeff Bonwick 
874b24ab676SJeff Bonwick static void
875b24ab676SJeff Bonwick ztest_rll_init(rll_t *rll)
876b24ab676SJeff Bonwick {
877b24ab676SJeff Bonwick 	rll->rll_writer = NULL;
878b24ab676SJeff Bonwick 	rll->rll_readers = 0;
879b24ab676SJeff Bonwick 	VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0);
880b24ab676SJeff Bonwick 	VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0);
881b24ab676SJeff Bonwick }
882b24ab676SJeff Bonwick 
883b24ab676SJeff Bonwick static void
884b24ab676SJeff Bonwick ztest_rll_destroy(rll_t *rll)
885b24ab676SJeff Bonwick {
886b24ab676SJeff Bonwick 	ASSERT(rll->rll_writer == NULL);
887b24ab676SJeff Bonwick 	ASSERT(rll->rll_readers == 0);
888b24ab676SJeff Bonwick 	VERIFY(_mutex_destroy(&rll->rll_lock) == 0);
889b24ab676SJeff Bonwick 	VERIFY(cond_destroy(&rll->rll_cv) == 0);
890b24ab676SJeff Bonwick }
891b24ab676SJeff Bonwick 
892b24ab676SJeff Bonwick static void
893b24ab676SJeff Bonwick ztest_rll_lock(rll_t *rll, rl_type_t type)
894b24ab676SJeff Bonwick {
895b24ab676SJeff Bonwick 	VERIFY(mutex_lock(&rll->rll_lock) == 0);
896b24ab676SJeff Bonwick 
897b24ab676SJeff Bonwick 	if (type == RL_READER) {
898b24ab676SJeff Bonwick 		while (rll->rll_writer != NULL)
899b24ab676SJeff Bonwick 			(void) cond_wait(&rll->rll_cv, &rll->rll_lock);
900b24ab676SJeff Bonwick 		rll->rll_readers++;
901b24ab676SJeff Bonwick 	} else {
902b24ab676SJeff Bonwick 		while (rll->rll_writer != NULL || rll->rll_readers)
903b24ab676SJeff Bonwick 			(void) cond_wait(&rll->rll_cv, &rll->rll_lock);
904b24ab676SJeff Bonwick 		rll->rll_writer = curthread;
905b24ab676SJeff Bonwick 	}
906b24ab676SJeff Bonwick 
907b24ab676SJeff Bonwick 	VERIFY(mutex_unlock(&rll->rll_lock) == 0);
908b24ab676SJeff Bonwick }
909b24ab676SJeff Bonwick 
910b24ab676SJeff Bonwick static void
911b24ab676SJeff Bonwick ztest_rll_unlock(rll_t *rll)
912b24ab676SJeff Bonwick {
913b24ab676SJeff Bonwick 	VERIFY(mutex_lock(&rll->rll_lock) == 0);
914b24ab676SJeff Bonwick 
915b24ab676SJeff Bonwick 	if (rll->rll_writer) {
916b24ab676SJeff Bonwick 		ASSERT(rll->rll_readers == 0);
917b24ab676SJeff Bonwick 		rll->rll_writer = NULL;
918b24ab676SJeff Bonwick 	} else {
919b24ab676SJeff Bonwick 		ASSERT(rll->rll_readers != 0);
920b24ab676SJeff Bonwick 		ASSERT(rll->rll_writer == NULL);
921b24ab676SJeff Bonwick 		rll->rll_readers--;
922b24ab676SJeff Bonwick 	}
923b24ab676SJeff Bonwick 
924b24ab676SJeff Bonwick 	if (rll->rll_writer == NULL && rll->rll_readers == 0)
925b24ab676SJeff Bonwick 		VERIFY(cond_broadcast(&rll->rll_cv) == 0);
926b24ab676SJeff Bonwick 
927b24ab676SJeff Bonwick 	VERIFY(mutex_unlock(&rll->rll_lock) == 0);
928b24ab676SJeff Bonwick }
929b24ab676SJeff Bonwick 
930b24ab676SJeff Bonwick static void
931b24ab676SJeff Bonwick ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type)
932b24ab676SJeff Bonwick {
933b24ab676SJeff Bonwick 	rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
934b24ab676SJeff Bonwick 
935b24ab676SJeff Bonwick 	ztest_rll_lock(rll, type);
936b24ab676SJeff Bonwick }
937b24ab676SJeff Bonwick 
938b24ab676SJeff Bonwick static void
939b24ab676SJeff Bonwick ztest_object_unlock(ztest_ds_t *zd, uint64_t object)
940b24ab676SJeff Bonwick {
941b24ab676SJeff Bonwick 	rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
942b24ab676SJeff Bonwick 
943b24ab676SJeff Bonwick 	ztest_rll_unlock(rll);
944b24ab676SJeff Bonwick }
945b24ab676SJeff Bonwick 
946b24ab676SJeff Bonwick static rl_t *
947b24ab676SJeff Bonwick ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset,
948b24ab676SJeff Bonwick     uint64_t size, rl_type_t type)
949b24ab676SJeff Bonwick {
950b24ab676SJeff Bonwick 	uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1));
951b24ab676SJeff Bonwick 	rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)];
952b24ab676SJeff Bonwick 	rl_t *rl;
953b24ab676SJeff Bonwick 
954b24ab676SJeff Bonwick 	rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL);
955b24ab676SJeff Bonwick 	rl->rl_object = object;
956b24ab676SJeff Bonwick 	rl->rl_offset = offset;
957b24ab676SJeff Bonwick 	rl->rl_size = size;
958b24ab676SJeff Bonwick 	rl->rl_lock = rll;
959b24ab676SJeff Bonwick 
960b24ab676SJeff Bonwick 	ztest_rll_lock(rll, type);
961b24ab676SJeff Bonwick 
962b24ab676SJeff Bonwick 	return (rl);
963b24ab676SJeff Bonwick }
964b24ab676SJeff Bonwick 
965b24ab676SJeff Bonwick static void
966b24ab676SJeff Bonwick ztest_range_unlock(rl_t *rl)
967b24ab676SJeff Bonwick {
968b24ab676SJeff Bonwick 	rll_t *rll = rl->rl_lock;
969b24ab676SJeff Bonwick 
970b24ab676SJeff Bonwick 	ztest_rll_unlock(rll);
971b24ab676SJeff Bonwick 
972b24ab676SJeff Bonwick 	umem_free(rl, sizeof (*rl));
973b24ab676SJeff Bonwick }
974b24ab676SJeff Bonwick 
975b24ab676SJeff Bonwick static void
976b24ab676SJeff Bonwick ztest_zd_init(ztest_ds_t *zd, objset_t *os)
977b24ab676SJeff Bonwick {
978b24ab676SJeff Bonwick 	zd->zd_os = os;
979b24ab676SJeff Bonwick 	zd->zd_zilog = dmu_objset_zil(os);
980b24ab676SJeff Bonwick 	zd->zd_seq = 0;
981b24ab676SJeff Bonwick 	dmu_objset_name(os, zd->zd_name);
982b24ab676SJeff Bonwick 
983b24ab676SJeff Bonwick 	VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0);
984b24ab676SJeff Bonwick 
985b24ab676SJeff Bonwick 	for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
986b24ab676SJeff Bonwick 		ztest_rll_init(&zd->zd_object_lock[l]);
987b24ab676SJeff Bonwick 
988b24ab676SJeff Bonwick 	for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
989b24ab676SJeff Bonwick 		ztest_rll_init(&zd->zd_range_lock[l]);
990b24ab676SJeff Bonwick }
991b24ab676SJeff Bonwick 
992b24ab676SJeff Bonwick static void
993b24ab676SJeff Bonwick ztest_zd_fini(ztest_ds_t *zd)
994b24ab676SJeff Bonwick {
995b24ab676SJeff Bonwick 	VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0);
996b24ab676SJeff Bonwick 
997b24ab676SJeff Bonwick 	for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
998b24ab676SJeff Bonwick 		ztest_rll_destroy(&zd->zd_object_lock[l]);
999b24ab676SJeff Bonwick 
1000b24ab676SJeff Bonwick 	for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1001b24ab676SJeff Bonwick 		ztest_rll_destroy(&zd->zd_range_lock[l]);
1002b24ab676SJeff Bonwick }
1003b24ab676SJeff Bonwick 
1004b24ab676SJeff Bonwick #define	TXG_MIGHTWAIT	(ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT)
1005b24ab676SJeff Bonwick 
1006b24ab676SJeff Bonwick static uint64_t
1007b24ab676SJeff Bonwick ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag)
1008b24ab676SJeff Bonwick {
1009b24ab676SJeff Bonwick 	uint64_t txg;
1010b24ab676SJeff Bonwick 	int error;
1011b24ab676SJeff Bonwick 
1012b24ab676SJeff Bonwick 	/*
1013b24ab676SJeff Bonwick 	 * Attempt to assign tx to some transaction group.
1014b24ab676SJeff Bonwick 	 */
1015b24ab676SJeff Bonwick 	error = dmu_tx_assign(tx, txg_how);
1016b24ab676SJeff Bonwick 	if (error) {
1017b24ab676SJeff Bonwick 		if (error == ERESTART) {
1018b24ab676SJeff Bonwick 			ASSERT(txg_how == TXG_NOWAIT);
1019b24ab676SJeff Bonwick 			dmu_tx_wait(tx);
1020b24ab676SJeff Bonwick 		} else {
1021b24ab676SJeff Bonwick 			ASSERT3U(error, ==, ENOSPC);
1022b24ab676SJeff Bonwick 			ztest_record_enospc(tag);
1023b24ab676SJeff Bonwick 		}
1024b24ab676SJeff Bonwick 		dmu_tx_abort(tx);
1025b24ab676SJeff Bonwick 		return (0);
1026b24ab676SJeff Bonwick 	}
1027b24ab676SJeff Bonwick 	txg = dmu_tx_get_txg(tx);
1028b24ab676SJeff Bonwick 	ASSERT(txg != 0);
1029b24ab676SJeff Bonwick 	return (txg);
1030b24ab676SJeff Bonwick }
1031b24ab676SJeff Bonwick 
1032b24ab676SJeff Bonwick static void
1033b24ab676SJeff Bonwick ztest_pattern_set(void *buf, uint64_t size, uint64_t value)
1034b24ab676SJeff Bonwick {
1035b24ab676SJeff Bonwick 	uint64_t *ip = buf;
1036b24ab676SJeff Bonwick 	uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1037b24ab676SJeff Bonwick 
1038b24ab676SJeff Bonwick 	while (ip < ip_end)
1039b24ab676SJeff Bonwick 		*ip++ = value;
1040b24ab676SJeff Bonwick }
1041b24ab676SJeff Bonwick 
1042b24ab676SJeff Bonwick static boolean_t
1043b24ab676SJeff Bonwick ztest_pattern_match(void *buf, uint64_t size, uint64_t value)
1044b24ab676SJeff Bonwick {
1045b24ab676SJeff Bonwick 	uint64_t *ip = buf;
1046b24ab676SJeff Bonwick 	uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1047b24ab676SJeff Bonwick 	uint64_t diff = 0;
1048b24ab676SJeff Bonwick 
1049b24ab676SJeff Bonwick 	while (ip < ip_end)
1050b24ab676SJeff Bonwick 		diff |= (value - *ip++);
1051b24ab676SJeff Bonwick 
1052b24ab676SJeff Bonwick 	return (diff == 0);
1053b24ab676SJeff Bonwick }
1054b24ab676SJeff Bonwick 
1055b24ab676SJeff Bonwick static void
1056b24ab676SJeff Bonwick ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1057b24ab676SJeff Bonwick     uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
1058b24ab676SJeff Bonwick {
1059b24ab676SJeff Bonwick 	bt->bt_magic = BT_MAGIC;
1060b24ab676SJeff Bonwick 	bt->bt_objset = dmu_objset_id(os);
1061b24ab676SJeff Bonwick 	bt->bt_object = object;
1062b24ab676SJeff Bonwick 	bt->bt_offset = offset;
1063b24ab676SJeff Bonwick 	bt->bt_gen = gen;
1064b24ab676SJeff Bonwick 	bt->bt_txg = txg;
1065b24ab676SJeff Bonwick 	bt->bt_crtxg = crtxg;
1066b24ab676SJeff Bonwick }
1067b24ab676SJeff Bonwick 
1068b24ab676SJeff Bonwick static void
1069b24ab676SJeff Bonwick ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1070b24ab676SJeff Bonwick     uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
1071b24ab676SJeff Bonwick {
1072b24ab676SJeff Bonwick 	ASSERT(bt->bt_magic == BT_MAGIC);
1073b24ab676SJeff Bonwick 	ASSERT(bt->bt_objset == dmu_objset_id(os));
1074b24ab676SJeff Bonwick 	ASSERT(bt->bt_object == object);
1075b24ab676SJeff Bonwick 	ASSERT(bt->bt_offset == offset);
1076b24ab676SJeff Bonwick 	ASSERT(bt->bt_gen <= gen);
1077b24ab676SJeff Bonwick 	ASSERT(bt->bt_txg <= txg);
1078b24ab676SJeff Bonwick 	ASSERT(bt->bt_crtxg == crtxg);
1079b24ab676SJeff Bonwick }
1080b24ab676SJeff Bonwick 
1081b24ab676SJeff Bonwick static ztest_block_tag_t *
1082b24ab676SJeff Bonwick ztest_bt_bonus(dmu_buf_t *db)
1083b24ab676SJeff Bonwick {
1084b24ab676SJeff Bonwick 	dmu_object_info_t doi;
1085b24ab676SJeff Bonwick 	ztest_block_tag_t *bt;
1086b24ab676SJeff Bonwick 
1087b24ab676SJeff Bonwick 	dmu_object_info_from_db(db, &doi);
1088b24ab676SJeff Bonwick 	ASSERT3U(doi.doi_bonus_size, <=, db->db_size);
1089b24ab676SJeff Bonwick 	ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt));
1090b24ab676SJeff Bonwick 	bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt));
1091b24ab676SJeff Bonwick 
1092b24ab676SJeff Bonwick 	return (bt);
1093b24ab676SJeff Bonwick }
1094b24ab676SJeff Bonwick 
1095b24ab676SJeff Bonwick /*
1096b24ab676SJeff Bonwick  * ZIL logging ops
1097b24ab676SJeff Bonwick  */
1098b24ab676SJeff Bonwick 
1099b24ab676SJeff Bonwick #define	lrz_type	lr_mode
1100b24ab676SJeff Bonwick #define	lrz_blocksize	lr_uid
1101b24ab676SJeff Bonwick #define	lrz_ibshift	lr_gid
1102b24ab676SJeff Bonwick #define	lrz_bonustype	lr_rdev
1103b24ab676SJeff Bonwick #define	lrz_bonuslen	lr_crtime[1]
1104b24ab676SJeff Bonwick 
1105*5002558fSNeil Perrin static void
1106b24ab676SJeff Bonwick ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr)
1107b24ab676SJeff Bonwick {
1108b24ab676SJeff Bonwick 	char *name = (void *)(lr + 1);		/* name follows lr */
1109b24ab676SJeff Bonwick 	size_t namesize = strlen(name) + 1;
1110b24ab676SJeff Bonwick 	itx_t *itx;
1111b24ab676SJeff Bonwick 
1112b24ab676SJeff Bonwick 	if (zil_replaying(zd->zd_zilog, tx))
1113*5002558fSNeil Perrin 		return;
1114b24ab676SJeff Bonwick 
1115b24ab676SJeff Bonwick 	itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize);
1116b24ab676SJeff Bonwick 	bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1117b24ab676SJeff Bonwick 	    sizeof (*lr) + namesize - sizeof (lr_t));
1118b24ab676SJeff Bonwick 
1119*5002558fSNeil Perrin 	zil_itx_assign(zd->zd_zilog, itx, tx);
1120b24ab676SJeff Bonwick }
1121b24ab676SJeff Bonwick 
1122*5002558fSNeil Perrin static void
1123*5002558fSNeil Perrin ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object)
1124b24ab676SJeff Bonwick {
1125b24ab676SJeff Bonwick 	char *name = (void *)(lr + 1);		/* name follows lr */
1126b24ab676SJeff Bonwick 	size_t namesize = strlen(name) + 1;
1127b24ab676SJeff Bonwick 	itx_t *itx;
1128b24ab676SJeff Bonwick 
1129b24ab676SJeff Bonwick 	if (zil_replaying(zd->zd_zilog, tx))
1130*5002558fSNeil Perrin 		return;
1131b24ab676SJeff Bonwick 
1132b24ab676SJeff Bonwick 	itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize);
1133b24ab676SJeff Bonwick 	bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1134b24ab676SJeff Bonwick 	    sizeof (*lr) + namesize - sizeof (lr_t));
1135b24ab676SJeff Bonwick 
1136*5002558fSNeil Perrin 	itx->itx_private = (void *)object;
1137*5002558fSNeil Perrin 	zil_itx_assign(zd->zd_zilog, itx, tx);
1138b24ab676SJeff Bonwick }
1139b24ab676SJeff Bonwick 
1140*5002558fSNeil Perrin static void
1141b24ab676SJeff Bonwick ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr)
1142b24ab676SJeff Bonwick {
1143b24ab676SJeff Bonwick 	itx_t *itx;
1144b24ab676SJeff Bonwick 	itx_wr_state_t write_state = ztest_random(WR_NUM_STATES);
1145b24ab676SJeff Bonwick 
1146b24ab676SJeff Bonwick 	if (zil_replaying(zd->zd_zilog, tx))
1147*5002558fSNeil Perrin 		return;
1148b24ab676SJeff Bonwick 
1149b24ab676SJeff Bonwick 	if (lr->lr_length > ZIL_MAX_LOG_DATA)
1150b24ab676SJeff Bonwick 		write_state = WR_INDIRECT;
1151b24ab676SJeff Bonwick 
1152b24ab676SJeff Bonwick 	itx = zil_itx_create(TX_WRITE,
1153b24ab676SJeff Bonwick 	    sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0));
1154b24ab676SJeff Bonwick 
1155b24ab676SJeff Bonwick 	if (write_state == WR_COPIED &&
1156b24ab676SJeff Bonwick 	    dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length,
1157b24ab676SJeff Bonwick 	    ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) {
1158b24ab676SJeff Bonwick 		zil_itx_destroy(itx);
1159b24ab676SJeff Bonwick 		itx = zil_itx_create(TX_WRITE, sizeof (*lr));
1160b24ab676SJeff Bonwick 		write_state = WR_NEED_COPY;
1161b24ab676SJeff Bonwick 	}
1162b24ab676SJeff Bonwick 	itx->itx_private = zd;
1163b24ab676SJeff Bonwick 	itx->itx_wr_state = write_state;
1164b24ab676SJeff Bonwick 	itx->itx_sync = (ztest_random(8) == 0);
1165b24ab676SJeff Bonwick 	itx->itx_sod += (write_state == WR_NEED_COPY ? lr->lr_length : 0);
1166b24ab676SJeff Bonwick 
1167b24ab676SJeff Bonwick 	bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1168b24ab676SJeff Bonwick 	    sizeof (*lr) - sizeof (lr_t));
1169b24ab676SJeff Bonwick 
1170*5002558fSNeil Perrin 	zil_itx_assign(zd->zd_zilog, itx, tx);
1171b24ab676SJeff Bonwick }
1172b24ab676SJeff Bonwick 
1173*5002558fSNeil Perrin static void
1174b24ab676SJeff Bonwick ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr)
1175b24ab676SJeff Bonwick {
1176b24ab676SJeff Bonwick 	itx_t *itx;
1177b24ab676SJeff Bonwick 
1178b24ab676SJeff Bonwick 	if (zil_replaying(zd->zd_zilog, tx))
1179*5002558fSNeil Perrin 		return;
1180b24ab676SJeff Bonwick 
1181b24ab676SJeff Bonwick 	itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr));
1182b24ab676SJeff Bonwick 	bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1183b24ab676SJeff Bonwick 	    sizeof (*lr) - sizeof (lr_t));
1184b24ab676SJeff Bonwick 
1185*5002558fSNeil Perrin 	itx->itx_sync = B_FALSE;
1186*5002558fSNeil Perrin 	zil_itx_assign(zd->zd_zilog, itx, tx);
1187b24ab676SJeff Bonwick }
1188b24ab676SJeff Bonwick 
1189*5002558fSNeil Perrin static void
1190b24ab676SJeff Bonwick ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr)
1191b24ab676SJeff Bonwick {
1192b24ab676SJeff Bonwick 	itx_t *itx;
1193b24ab676SJeff Bonwick 
1194b24ab676SJeff Bonwick 	if (zil_replaying(zd->zd_zilog, tx))
1195*5002558fSNeil Perrin 		return;
1196b24ab676SJeff Bonwick 
1197b24ab676SJeff Bonwick 	itx = zil_itx_create(TX_SETATTR, sizeof (*lr));
1198b24ab676SJeff Bonwick 	bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1199b24ab676SJeff Bonwick 	    sizeof (*lr) - sizeof (lr_t));
1200b24ab676SJeff Bonwick 
1201*5002558fSNeil Perrin 	itx->itx_sync = B_FALSE;
1202*5002558fSNeil Perrin 	zil_itx_assign(zd->zd_zilog, itx, tx);
1203b24ab676SJeff Bonwick }
1204b24ab676SJeff Bonwick 
1205b24ab676SJeff Bonwick /*
1206b24ab676SJeff Bonwick  * ZIL replay ops
1207b24ab676SJeff Bonwick  */
1208b24ab676SJeff Bonwick static int
1209b24ab676SJeff Bonwick ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap)
1210b24ab676SJeff Bonwick {
1211b24ab676SJeff Bonwick 	char *name = (void *)(lr + 1);		/* name follows lr */
1212b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1213b24ab676SJeff Bonwick 	ztest_block_tag_t *bbt;
1214b24ab676SJeff Bonwick 	dmu_buf_t *db;
1215b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1216b24ab676SJeff Bonwick 	uint64_t txg;
1217b24ab676SJeff Bonwick 	int error = 0;
1218b24ab676SJeff Bonwick 
1219fa9e4066Sahrens 	if (byteswap)
1220fa9e4066Sahrens 		byteswap_uint64_array(lr, sizeof (*lr));
1221fa9e4066Sahrens 
1222b24ab676SJeff Bonwick 	ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1223b24ab676SJeff Bonwick 	ASSERT(name[0] != '\0');
1224b24ab676SJeff Bonwick 
1225fa9e4066Sahrens 	tx = dmu_tx_create(os);
1226b24ab676SJeff Bonwick 
1227b24ab676SJeff Bonwick 	dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name);
1228b24ab676SJeff Bonwick 
1229b24ab676SJeff Bonwick 	if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1230b24ab676SJeff Bonwick 		dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL);
1231b24ab676SJeff Bonwick 	} else {
1232b24ab676SJeff Bonwick 		dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
1233b24ab676SJeff Bonwick 	}
1234b24ab676SJeff Bonwick 
1235b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1236b24ab676SJeff Bonwick 	if (txg == 0)
1237b24ab676SJeff Bonwick 		return (ENOSPC);
1238b24ab676SJeff Bonwick 
1239b24ab676SJeff Bonwick 	ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid);
1240b24ab676SJeff Bonwick 
1241b24ab676SJeff Bonwick 	if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1242b24ab676SJeff Bonwick 		if (lr->lr_foid == 0) {
1243b24ab676SJeff Bonwick 			lr->lr_foid = zap_create(os,
1244b24ab676SJeff Bonwick 			    lr->lrz_type, lr->lrz_bonustype,
1245b24ab676SJeff Bonwick 			    lr->lrz_bonuslen, tx);
1246b24ab676SJeff Bonwick 		} else {
1247b24ab676SJeff Bonwick 			error = zap_create_claim(os, lr->lr_foid,
1248b24ab676SJeff Bonwick 			    lr->lrz_type, lr->lrz_bonustype,
1249b24ab676SJeff Bonwick 			    lr->lrz_bonuslen, tx);
1250b24ab676SJeff Bonwick 		}
1251b24ab676SJeff Bonwick 	} else {
1252b24ab676SJeff Bonwick 		if (lr->lr_foid == 0) {
1253b24ab676SJeff Bonwick 			lr->lr_foid = dmu_object_alloc(os,
1254b24ab676SJeff Bonwick 			    lr->lrz_type, 0, lr->lrz_bonustype,
1255b24ab676SJeff Bonwick 			    lr->lrz_bonuslen, tx);
1256b24ab676SJeff Bonwick 		} else {
1257b24ab676SJeff Bonwick 			error = dmu_object_claim(os, lr->lr_foid,
1258b24ab676SJeff Bonwick 			    lr->lrz_type, 0, lr->lrz_bonustype,
1259b24ab676SJeff Bonwick 			    lr->lrz_bonuslen, tx);
1260b24ab676SJeff Bonwick 		}
1261b24ab676SJeff Bonwick 	}
1262b24ab676SJeff Bonwick 
1263fa9e4066Sahrens 	if (error) {
1264b24ab676SJeff Bonwick 		ASSERT3U(error, ==, EEXIST);
1265b24ab676SJeff Bonwick 		ASSERT(zd->zd_zilog->zl_replay);
1266b24ab676SJeff Bonwick 		dmu_tx_commit(tx);
1267fa9e4066Sahrens 		return (error);
1268fa9e4066Sahrens 	}
1269fa9e4066Sahrens 
1270b24ab676SJeff Bonwick 	ASSERT(lr->lr_foid != 0);
1271b24ab676SJeff Bonwick 
1272b24ab676SJeff Bonwick 	if (lr->lrz_type != DMU_OT_ZAP_OTHER)
1273b24ab676SJeff Bonwick 		VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid,
1274b24ab676SJeff Bonwick 		    lr->lrz_blocksize, lr->lrz_ibshift, tx));
1275b24ab676SJeff Bonwick 
1276b24ab676SJeff Bonwick 	VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1277b24ab676SJeff Bonwick 	bbt = ztest_bt_bonus(db);
1278b24ab676SJeff Bonwick 	dmu_buf_will_dirty(db, tx);
1279b24ab676SJeff Bonwick 	ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg);
1280b24ab676SJeff Bonwick 	dmu_buf_rele(db, FTAG);
1281b24ab676SJeff Bonwick 
1282b24ab676SJeff Bonwick 	VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1,
1283b24ab676SJeff Bonwick 	    &lr->lr_foid, tx));
1284b24ab676SJeff Bonwick 
1285b24ab676SJeff Bonwick 	(void) ztest_log_create(zd, tx, lr);
1286b24ab676SJeff Bonwick 
1287fa9e4066Sahrens 	dmu_tx_commit(tx);
1288fa9e4066Sahrens 
1289b24ab676SJeff Bonwick 	return (0);
1290b24ab676SJeff Bonwick }
1291b24ab676SJeff Bonwick 
1292b24ab676SJeff Bonwick static int
1293b24ab676SJeff Bonwick ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap)
1294b24ab676SJeff Bonwick {
1295b24ab676SJeff Bonwick 	char *name = (void *)(lr + 1);		/* name follows lr */
1296b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1297b24ab676SJeff Bonwick 	dmu_object_info_t doi;
1298b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1299b24ab676SJeff Bonwick 	uint64_t object, txg;
1300b24ab676SJeff Bonwick 
1301b24ab676SJeff Bonwick 	if (byteswap)
1302b24ab676SJeff Bonwick 		byteswap_uint64_array(lr, sizeof (*lr));
1303b24ab676SJeff Bonwick 
1304b24ab676SJeff Bonwick 	ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1305b24ab676SJeff Bonwick 	ASSERT(name[0] != '\0');
1306b24ab676SJeff Bonwick 
1307b24ab676SJeff Bonwick 	VERIFY3U(0, ==,
1308b24ab676SJeff Bonwick 	    zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object));
1309b24ab676SJeff Bonwick 	ASSERT(object != 0);
1310b24ab676SJeff Bonwick 
1311b24ab676SJeff Bonwick 	ztest_object_lock(zd, object, RL_WRITER);
1312b24ab676SJeff Bonwick 
1313b24ab676SJeff Bonwick 	VERIFY3U(0, ==, dmu_object_info(os, object, &doi));
1314b24ab676SJeff Bonwick 
1315b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
1316b24ab676SJeff Bonwick 
1317b24ab676SJeff Bonwick 	dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name);
1318b24ab676SJeff Bonwick 	dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END);
1319b24ab676SJeff Bonwick 
1320b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1321b24ab676SJeff Bonwick 	if (txg == 0) {
1322b24ab676SJeff Bonwick 		ztest_object_unlock(zd, object);
1323b24ab676SJeff Bonwick 		return (ENOSPC);
1324b24ab676SJeff Bonwick 	}
1325b24ab676SJeff Bonwick 
1326b24ab676SJeff Bonwick 	if (doi.doi_type == DMU_OT_ZAP_OTHER) {
1327b24ab676SJeff Bonwick 		VERIFY3U(0, ==, zap_destroy(os, object, tx));
1328b24ab676SJeff Bonwick 	} else {
1329b24ab676SJeff Bonwick 		VERIFY3U(0, ==, dmu_object_free(os, object, tx));
1330b24ab676SJeff Bonwick 	}
1331b24ab676SJeff Bonwick 
1332b24ab676SJeff Bonwick 	VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx));
1333b24ab676SJeff Bonwick 
1334*5002558fSNeil Perrin 	(void) ztest_log_remove(zd, tx, lr, object);
1335b24ab676SJeff Bonwick 
1336b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
1337b24ab676SJeff Bonwick 
1338b24ab676SJeff Bonwick 	ztest_object_unlock(zd, object);
1339b24ab676SJeff Bonwick 
1340b24ab676SJeff Bonwick 	return (0);
1341b24ab676SJeff Bonwick }
1342b24ab676SJeff Bonwick 
1343b24ab676SJeff Bonwick static int
1344b24ab676SJeff Bonwick ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap)
1345b24ab676SJeff Bonwick {
1346b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1347b24ab676SJeff Bonwick 	void *data = lr + 1;			/* data follows lr */
1348b24ab676SJeff Bonwick 	uint64_t offset, length;
1349b24ab676SJeff Bonwick 	ztest_block_tag_t *bt = data;
1350b24ab676SJeff Bonwick 	ztest_block_tag_t *bbt;
1351b24ab676SJeff Bonwick 	uint64_t gen, txg, lrtxg, crtxg;
1352b24ab676SJeff Bonwick 	dmu_object_info_t doi;
1353b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1354b24ab676SJeff Bonwick 	dmu_buf_t *db;
1355b24ab676SJeff Bonwick 	arc_buf_t *abuf = NULL;
1356b24ab676SJeff Bonwick 	rl_t *rl;
1357b24ab676SJeff Bonwick 
1358b24ab676SJeff Bonwick 	if (byteswap)
1359b24ab676SJeff Bonwick 		byteswap_uint64_array(lr, sizeof (*lr));
1360b24ab676SJeff Bonwick 
1361b24ab676SJeff Bonwick 	offset = lr->lr_offset;
1362b24ab676SJeff Bonwick 	length = lr->lr_length;
1363b24ab676SJeff Bonwick 
1364b24ab676SJeff Bonwick 	/* If it's a dmu_sync() block, write the whole block */
1365b24ab676SJeff Bonwick 	if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
1366b24ab676SJeff Bonwick 		uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
1367b24ab676SJeff Bonwick 		if (length < blocksize) {
1368b24ab676SJeff Bonwick 			offset -= offset % blocksize;
1369b24ab676SJeff Bonwick 			length = blocksize;
1370b24ab676SJeff Bonwick 		}
1371b24ab676SJeff Bonwick 	}
1372b24ab676SJeff Bonwick 
1373b24ab676SJeff Bonwick 	if (bt->bt_magic == BSWAP_64(BT_MAGIC))
1374b24ab676SJeff Bonwick 		byteswap_uint64_array(bt, sizeof (*bt));
1375b24ab676SJeff Bonwick 
1376b24ab676SJeff Bonwick 	if (bt->bt_magic != BT_MAGIC)
1377b24ab676SJeff Bonwick 		bt = NULL;
1378b24ab676SJeff Bonwick 
1379b24ab676SJeff Bonwick 	ztest_object_lock(zd, lr->lr_foid, RL_READER);
1380b24ab676SJeff Bonwick 	rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER);
1381b24ab676SJeff Bonwick 
1382b24ab676SJeff Bonwick 	VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1383b24ab676SJeff Bonwick 
1384b24ab676SJeff Bonwick 	dmu_object_info_from_db(db, &doi);
1385b24ab676SJeff Bonwick 
1386b24ab676SJeff Bonwick 	bbt = ztest_bt_bonus(db);
1387b24ab676SJeff Bonwick 	ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1388b24ab676SJeff Bonwick 	gen = bbt->bt_gen;
1389b24ab676SJeff Bonwick 	crtxg = bbt->bt_crtxg;
1390b24ab676SJeff Bonwick 	lrtxg = lr->lr_common.lrc_txg;
1391b24ab676SJeff Bonwick 
1392b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
1393b24ab676SJeff Bonwick 
1394b24ab676SJeff Bonwick 	dmu_tx_hold_write(tx, lr->lr_foid, offset, length);
1395b24ab676SJeff Bonwick 
1396b24ab676SJeff Bonwick 	if (ztest_random(8) == 0 && length == doi.doi_data_block_size &&
1397b24ab676SJeff Bonwick 	    P2PHASE(offset, length) == 0)
1398b24ab676SJeff Bonwick 		abuf = dmu_request_arcbuf(db, length);
1399b24ab676SJeff Bonwick 
1400b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1401b24ab676SJeff Bonwick 	if (txg == 0) {
1402b24ab676SJeff Bonwick 		if (abuf != NULL)
1403b24ab676SJeff Bonwick 			dmu_return_arcbuf(abuf);
1404b24ab676SJeff Bonwick 		dmu_buf_rele(db, FTAG);
1405b24ab676SJeff Bonwick 		ztest_range_unlock(rl);
1406b24ab676SJeff Bonwick 		ztest_object_unlock(zd, lr->lr_foid);
1407b24ab676SJeff Bonwick 		return (ENOSPC);
1408b24ab676SJeff Bonwick 	}
1409b24ab676SJeff Bonwick 
1410b24ab676SJeff Bonwick 	if (bt != NULL) {
1411b24ab676SJeff Bonwick 		/*
1412b24ab676SJeff Bonwick 		 * Usually, verify the old data before writing new data --
1413b24ab676SJeff Bonwick 		 * but not always, because we also want to verify correct
1414b24ab676SJeff Bonwick 		 * behavior when the data was not recently read into cache.
1415b24ab676SJeff Bonwick 		 */
1416b24ab676SJeff Bonwick 		ASSERT(offset % doi.doi_data_block_size == 0);
1417b24ab676SJeff Bonwick 		if (ztest_random(4) != 0) {
1418b24ab676SJeff Bonwick 			int prefetch = ztest_random(2) ?
1419b24ab676SJeff Bonwick 			    DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH;
1420b24ab676SJeff Bonwick 			ztest_block_tag_t rbt;
1421b24ab676SJeff Bonwick 
1422b24ab676SJeff Bonwick 			VERIFY(dmu_read(os, lr->lr_foid, offset,
1423b24ab676SJeff Bonwick 			    sizeof (rbt), &rbt, prefetch) == 0);
1424b24ab676SJeff Bonwick 			if (rbt.bt_magic == BT_MAGIC) {
1425b24ab676SJeff Bonwick 				ztest_bt_verify(&rbt, os, lr->lr_foid,
1426b24ab676SJeff Bonwick 				    offset, gen, txg, crtxg);
1427b24ab676SJeff Bonwick 			}
1428b24ab676SJeff Bonwick 		}
1429b24ab676SJeff Bonwick 
1430b24ab676SJeff Bonwick 		/*
1431b24ab676SJeff Bonwick 		 * Writes can appear to be newer than the bonus buffer because
1432b24ab676SJeff Bonwick 		 * the ztest_get_data() callback does a dmu_read() of the
1433b24ab676SJeff Bonwick 		 * open-context data, which may be different than the data
1434b24ab676SJeff Bonwick 		 * as it was when the write was generated.
1435b24ab676SJeff Bonwick 		 */
1436b24ab676SJeff Bonwick 		if (zd->zd_zilog->zl_replay) {
1437b24ab676SJeff Bonwick 			ztest_bt_verify(bt, os, lr->lr_foid, offset,
1438b24ab676SJeff Bonwick 			    MAX(gen, bt->bt_gen), MAX(txg, lrtxg),
1439b24ab676SJeff Bonwick 			    bt->bt_crtxg);
1440b24ab676SJeff Bonwick 		}
1441b24ab676SJeff Bonwick 
1442b24ab676SJeff Bonwick 		/*
1443b24ab676SJeff Bonwick 		 * Set the bt's gen/txg to the bonus buffer's gen/txg
1444b24ab676SJeff Bonwick 		 * so that all of the usual ASSERTs will work.
1445b24ab676SJeff Bonwick 		 */
1446b24ab676SJeff Bonwick 		ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg);
1447b24ab676SJeff Bonwick 	}
1448b24ab676SJeff Bonwick 
1449b24ab676SJeff Bonwick 	if (abuf == NULL) {
1450b24ab676SJeff Bonwick 		dmu_write(os, lr->lr_foid, offset, length, data, tx);
1451b24ab676SJeff Bonwick 	} else {
1452b24ab676SJeff Bonwick 		bcopy(data, abuf->b_data, length);
1453b24ab676SJeff Bonwick 		dmu_assign_arcbuf(db, offset, abuf, tx);
1454b24ab676SJeff Bonwick 	}
1455b24ab676SJeff Bonwick 
1456b24ab676SJeff Bonwick 	(void) ztest_log_write(zd, tx, lr);
1457b24ab676SJeff Bonwick 
1458b24ab676SJeff Bonwick 	dmu_buf_rele(db, FTAG);
1459b24ab676SJeff Bonwick 
1460b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
1461b24ab676SJeff Bonwick 
1462b24ab676SJeff Bonwick 	ztest_range_unlock(rl);
1463b24ab676SJeff Bonwick 	ztest_object_unlock(zd, lr->lr_foid);
1464b24ab676SJeff Bonwick 
1465b24ab676SJeff Bonwick 	return (0);
1466b24ab676SJeff Bonwick }
1467b24ab676SJeff Bonwick 
1468b24ab676SJeff Bonwick static int
1469b24ab676SJeff Bonwick ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap)
1470b24ab676SJeff Bonwick {
1471b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1472b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1473b24ab676SJeff Bonwick 	uint64_t txg;
1474b24ab676SJeff Bonwick 	rl_t *rl;
1475b24ab676SJeff Bonwick 
1476b24ab676SJeff Bonwick 	if (byteswap)
1477b24ab676SJeff Bonwick 		byteswap_uint64_array(lr, sizeof (*lr));
1478b24ab676SJeff Bonwick 
1479b24ab676SJeff Bonwick 	ztest_object_lock(zd, lr->lr_foid, RL_READER);
1480b24ab676SJeff Bonwick 	rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length,
1481b24ab676SJeff Bonwick 	    RL_WRITER);
1482b24ab676SJeff Bonwick 
1483b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
1484b24ab676SJeff Bonwick 
1485b24ab676SJeff Bonwick 	dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length);
1486b24ab676SJeff Bonwick 
1487b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1488b24ab676SJeff Bonwick 	if (txg == 0) {
1489b24ab676SJeff Bonwick 		ztest_range_unlock(rl);
1490b24ab676SJeff Bonwick 		ztest_object_unlock(zd, lr->lr_foid);
1491b24ab676SJeff Bonwick 		return (ENOSPC);
1492b24ab676SJeff Bonwick 	}
1493b24ab676SJeff Bonwick 
1494b24ab676SJeff Bonwick 	VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset,
1495b24ab676SJeff Bonwick 	    lr->lr_length, tx) == 0);
1496b24ab676SJeff Bonwick 
1497b24ab676SJeff Bonwick 	(void) ztest_log_truncate(zd, tx, lr);
1498b24ab676SJeff Bonwick 
1499b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
1500b24ab676SJeff Bonwick 
1501b24ab676SJeff Bonwick 	ztest_range_unlock(rl);
1502b24ab676SJeff Bonwick 	ztest_object_unlock(zd, lr->lr_foid);
1503b24ab676SJeff Bonwick 
1504b24ab676SJeff Bonwick 	return (0);
1505b24ab676SJeff Bonwick }
1506b24ab676SJeff Bonwick 
1507b24ab676SJeff Bonwick static int
1508b24ab676SJeff Bonwick ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap)
1509b24ab676SJeff Bonwick {
1510b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1511b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1512b24ab676SJeff Bonwick 	dmu_buf_t *db;
1513b24ab676SJeff Bonwick 	ztest_block_tag_t *bbt;
1514b24ab676SJeff Bonwick 	uint64_t txg, lrtxg, crtxg;
1515b24ab676SJeff Bonwick 
1516b24ab676SJeff Bonwick 	if (byteswap)
1517b24ab676SJeff Bonwick 		byteswap_uint64_array(lr, sizeof (*lr));
1518b24ab676SJeff Bonwick 
1519b24ab676SJeff Bonwick 	ztest_object_lock(zd, lr->lr_foid, RL_WRITER);
1520b24ab676SJeff Bonwick 
1521b24ab676SJeff Bonwick 	VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1522b24ab676SJeff Bonwick 
1523b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
1524b24ab676SJeff Bonwick 	dmu_tx_hold_bonus(tx, lr->lr_foid);
1525b24ab676SJeff Bonwick 
1526b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1527b24ab676SJeff Bonwick 	if (txg == 0) {
1528b24ab676SJeff Bonwick 		dmu_buf_rele(db, FTAG);
1529b24ab676SJeff Bonwick 		ztest_object_unlock(zd, lr->lr_foid);
1530b24ab676SJeff Bonwick 		return (ENOSPC);
1531b24ab676SJeff Bonwick 	}
1532b24ab676SJeff Bonwick 
1533b24ab676SJeff Bonwick 	bbt = ztest_bt_bonus(db);
1534b24ab676SJeff Bonwick 	ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1535b24ab676SJeff Bonwick 	crtxg = bbt->bt_crtxg;
1536b24ab676SJeff Bonwick 	lrtxg = lr->lr_common.lrc_txg;
1537b24ab676SJeff Bonwick 
1538b24ab676SJeff Bonwick 	if (zd->zd_zilog->zl_replay) {
1539b24ab676SJeff Bonwick 		ASSERT(lr->lr_size != 0);
1540b24ab676SJeff Bonwick 		ASSERT(lr->lr_mode != 0);
1541b24ab676SJeff Bonwick 		ASSERT(lrtxg != 0);
1542b24ab676SJeff Bonwick 	} else {
1543b24ab676SJeff Bonwick 		/*
1544b24ab676SJeff Bonwick 		 * Randomly change the size and increment the generation.
1545b24ab676SJeff Bonwick 		 */
1546b24ab676SJeff Bonwick 		lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) *
1547b24ab676SJeff Bonwick 		    sizeof (*bbt);
1548b24ab676SJeff Bonwick 		lr->lr_mode = bbt->bt_gen + 1;
1549b24ab676SJeff Bonwick 		ASSERT(lrtxg == 0);
1550b24ab676SJeff Bonwick 	}
1551b24ab676SJeff Bonwick 
1552b24ab676SJeff Bonwick 	/*
1553b24ab676SJeff Bonwick 	 * Verify that the current bonus buffer is not newer than our txg.
1554b24ab676SJeff Bonwick 	 */
1555b24ab676SJeff Bonwick 	ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode,
1556b24ab676SJeff Bonwick 	    MAX(txg, lrtxg), crtxg);
1557b24ab676SJeff Bonwick 
1558b24ab676SJeff Bonwick 	dmu_buf_will_dirty(db, tx);
1559b24ab676SJeff Bonwick 
1560b24ab676SJeff Bonwick 	ASSERT3U(lr->lr_size, >=, sizeof (*bbt));
1561b24ab676SJeff Bonwick 	ASSERT3U(lr->lr_size, <=, db->db_size);
1562b24ab676SJeff Bonwick 	VERIFY3U(dmu_set_bonus(db, lr->lr_size, tx), ==, 0);
1563b24ab676SJeff Bonwick 	bbt = ztest_bt_bonus(db);
1564b24ab676SJeff Bonwick 
1565b24ab676SJeff Bonwick 	ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg);
1566b24ab676SJeff Bonwick 
1567b24ab676SJeff Bonwick 	dmu_buf_rele(db, FTAG);
1568b24ab676SJeff Bonwick 
1569b24ab676SJeff Bonwick 	(void) ztest_log_setattr(zd, tx, lr);
1570b24ab676SJeff Bonwick 
1571b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
1572b24ab676SJeff Bonwick 
1573b24ab676SJeff Bonwick 	ztest_object_unlock(zd, lr->lr_foid);
1574b24ab676SJeff Bonwick 
1575b24ab676SJeff Bonwick 	return (0);
1576fa9e4066Sahrens }
1577fa9e4066Sahrens 
1578fa9e4066Sahrens zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = {
1579fa9e4066Sahrens 	NULL,			/* 0 no such transaction type */
1580fa9e4066Sahrens 	ztest_replay_create,	/* TX_CREATE */
1581fa9e4066Sahrens 	NULL,			/* TX_MKDIR */
1582fa9e4066Sahrens 	NULL,			/* TX_MKXATTR */
1583fa9e4066Sahrens 	NULL,			/* TX_SYMLINK */
1584fa9e4066Sahrens 	ztest_replay_remove,	/* TX_REMOVE */
1585fa9e4066Sahrens 	NULL,			/* TX_RMDIR */
1586fa9e4066Sahrens 	NULL,			/* TX_LINK */
1587fa9e4066Sahrens 	NULL,			/* TX_RENAME */
1588b24ab676SJeff Bonwick 	ztest_replay_write,	/* TX_WRITE */
1589b24ab676SJeff Bonwick 	ztest_replay_truncate,	/* TX_TRUNCATE */
1590b24ab676SJeff Bonwick 	ztest_replay_setattr,	/* TX_SETATTR */
1591fa9e4066Sahrens 	NULL,			/* TX_ACL */
1592975c32a0SNeil Perrin 	NULL,			/* TX_CREATE_ACL */
1593975c32a0SNeil Perrin 	NULL,			/* TX_CREATE_ATTR */
1594975c32a0SNeil Perrin 	NULL,			/* TX_CREATE_ACL_ATTR */
1595975c32a0SNeil Perrin 	NULL,			/* TX_MKDIR_ACL */
1596975c32a0SNeil Perrin 	NULL,			/* TX_MKDIR_ATTR */
1597975c32a0SNeil Perrin 	NULL,			/* TX_MKDIR_ACL_ATTR */
1598975c32a0SNeil Perrin 	NULL,			/* TX_WRITE2 */
1599fa9e4066Sahrens };
1600fa9e4066Sahrens 
1601fa9e4066Sahrens /*
1602b24ab676SJeff Bonwick  * ZIL get_data callbacks
1603b24ab676SJeff Bonwick  */
1604b24ab676SJeff Bonwick 
1605b24ab676SJeff Bonwick static void
1606b24ab676SJeff Bonwick ztest_get_done(zgd_t *zgd, int error)
1607b24ab676SJeff Bonwick {
1608b24ab676SJeff Bonwick 	ztest_ds_t *zd = zgd->zgd_private;
1609b24ab676SJeff Bonwick 	uint64_t object = zgd->zgd_rl->rl_object;
1610b24ab676SJeff Bonwick 
1611b24ab676SJeff Bonwick 	if (zgd->zgd_db)
1612b24ab676SJeff Bonwick 		dmu_buf_rele(zgd->zgd_db, zgd);
1613b24ab676SJeff Bonwick 
1614b24ab676SJeff Bonwick 	ztest_range_unlock(zgd->zgd_rl);
1615b24ab676SJeff Bonwick 	ztest_object_unlock(zd, object);
1616b24ab676SJeff Bonwick 
1617b24ab676SJeff Bonwick 	if (error == 0 && zgd->zgd_bp)
1618b24ab676SJeff Bonwick 		zil_add_block(zgd->zgd_zilog, zgd->zgd_bp);
1619b24ab676SJeff Bonwick 
1620b24ab676SJeff Bonwick 	umem_free(zgd, sizeof (*zgd));
1621b24ab676SJeff Bonwick }
1622b24ab676SJeff Bonwick 
1623b24ab676SJeff Bonwick static int
1624b24ab676SJeff Bonwick ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio)
1625b24ab676SJeff Bonwick {
1626b24ab676SJeff Bonwick 	ztest_ds_t *zd = arg;
1627b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1628b24ab676SJeff Bonwick 	uint64_t object = lr->lr_foid;
1629b24ab676SJeff Bonwick 	uint64_t offset = lr->lr_offset;
1630b24ab676SJeff Bonwick 	uint64_t size = lr->lr_length;
1631b24ab676SJeff Bonwick 	blkptr_t *bp = &lr->lr_blkptr;
1632b24ab676SJeff Bonwick 	uint64_t txg = lr->lr_common.lrc_txg;
1633b24ab676SJeff Bonwick 	uint64_t crtxg;
1634b24ab676SJeff Bonwick 	dmu_object_info_t doi;
1635b24ab676SJeff Bonwick 	dmu_buf_t *db;
1636b24ab676SJeff Bonwick 	zgd_t *zgd;
1637b24ab676SJeff Bonwick 	int error;
1638b24ab676SJeff Bonwick 
1639b24ab676SJeff Bonwick 	ztest_object_lock(zd, object, RL_READER);
1640b24ab676SJeff Bonwick 	error = dmu_bonus_hold(os, object, FTAG, &db);
1641b24ab676SJeff Bonwick 	if (error) {
1642b24ab676SJeff Bonwick 		ztest_object_unlock(zd, object);
1643b24ab676SJeff Bonwick 		return (error);
1644b24ab676SJeff Bonwick 	}
1645b24ab676SJeff Bonwick 
1646b24ab676SJeff Bonwick 	crtxg = ztest_bt_bonus(db)->bt_crtxg;
1647b24ab676SJeff Bonwick 
1648b24ab676SJeff Bonwick 	if (crtxg == 0 || crtxg > txg) {
1649b24ab676SJeff Bonwick 		dmu_buf_rele(db, FTAG);
1650b24ab676SJeff Bonwick 		ztest_object_unlock(zd, object);
1651b24ab676SJeff Bonwick 		return (ENOENT);
1652b24ab676SJeff Bonwick 	}
1653b24ab676SJeff Bonwick 
1654b24ab676SJeff Bonwick 	dmu_object_info_from_db(db, &doi);
1655b24ab676SJeff Bonwick 	dmu_buf_rele(db, FTAG);
1656b24ab676SJeff Bonwick 	db = NULL;
1657b24ab676SJeff Bonwick 
1658b24ab676SJeff Bonwick 	zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL);
1659b24ab676SJeff Bonwick 	zgd->zgd_zilog = zd->zd_zilog;
1660b24ab676SJeff Bonwick 	zgd->zgd_private = zd;
1661b24ab676SJeff Bonwick 
1662b24ab676SJeff Bonwick 	if (buf != NULL) {	/* immediate write */
1663b24ab676SJeff Bonwick 		zgd->zgd_rl = ztest_range_lock(zd, object, offset, size,
1664b24ab676SJeff Bonwick 		    RL_READER);
1665b24ab676SJeff Bonwick 
1666b24ab676SJeff Bonwick 		error = dmu_read(os, object, offset, size, buf,
1667b24ab676SJeff Bonwick 		    DMU_READ_NO_PREFETCH);
1668b24ab676SJeff Bonwick 		ASSERT(error == 0);
1669b24ab676SJeff Bonwick 	} else {
1670b24ab676SJeff Bonwick 		size = doi.doi_data_block_size;
1671dfe73b3dSJeff Bonwick 		if (ISP2(size)) {
1672b24ab676SJeff Bonwick 			offset = P2ALIGN(offset, size);
1673dfe73b3dSJeff Bonwick 		} else {
1674dfe73b3dSJeff Bonwick 			ASSERT(offset < size);
1675dfe73b3dSJeff Bonwick 			offset = 0;
1676dfe73b3dSJeff Bonwick 		}
1677b24ab676SJeff Bonwick 
1678b24ab676SJeff Bonwick 		zgd->zgd_rl = ztest_range_lock(zd, object, offset, size,
1679b24ab676SJeff Bonwick 		    RL_READER);
1680b24ab676SJeff Bonwick 
168147cb52daSJeff Bonwick 		error = dmu_buf_hold(os, object, offset, zgd, &db,
168247cb52daSJeff Bonwick 		    DMU_READ_NO_PREFETCH);
1683b24ab676SJeff Bonwick 
1684b24ab676SJeff Bonwick 		if (error == 0) {
1685b24ab676SJeff Bonwick 			zgd->zgd_db = db;
1686b24ab676SJeff Bonwick 			zgd->zgd_bp = bp;
1687b24ab676SJeff Bonwick 
1688b24ab676SJeff Bonwick 			ASSERT(db->db_offset == offset);
1689b24ab676SJeff Bonwick 			ASSERT(db->db_size == size);
1690b24ab676SJeff Bonwick 
1691b24ab676SJeff Bonwick 			error = dmu_sync(zio, lr->lr_common.lrc_txg,
1692b24ab676SJeff Bonwick 			    ztest_get_done, zgd);
1693b24ab676SJeff Bonwick 
1694b24ab676SJeff Bonwick 			if (error == 0)
1695b24ab676SJeff Bonwick 				return (0);
1696b24ab676SJeff Bonwick 		}
1697b24ab676SJeff Bonwick 	}
1698b24ab676SJeff Bonwick 
1699b24ab676SJeff Bonwick 	ztest_get_done(zgd, error);
1700b24ab676SJeff Bonwick 
1701b24ab676SJeff Bonwick 	return (error);
1702b24ab676SJeff Bonwick }
1703b24ab676SJeff Bonwick 
1704b24ab676SJeff Bonwick static void *
1705b24ab676SJeff Bonwick ztest_lr_alloc(size_t lrsize, char *name)
1706b24ab676SJeff Bonwick {
1707b24ab676SJeff Bonwick 	char *lr;
1708b24ab676SJeff Bonwick 	size_t namesize = name ? strlen(name) + 1 : 0;
1709b24ab676SJeff Bonwick 
1710b24ab676SJeff Bonwick 	lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL);
1711b24ab676SJeff Bonwick 
1712b24ab676SJeff Bonwick 	if (name)
1713b24ab676SJeff Bonwick 		bcopy(name, lr + lrsize, namesize);
1714b24ab676SJeff Bonwick 
1715b24ab676SJeff Bonwick 	return (lr);
1716b24ab676SJeff Bonwick }
1717b24ab676SJeff Bonwick 
1718b24ab676SJeff Bonwick void
1719b24ab676SJeff Bonwick ztest_lr_free(void *lr, size_t lrsize, char *name)
1720b24ab676SJeff Bonwick {
1721b24ab676SJeff Bonwick 	size_t namesize = name ? strlen(name) + 1 : 0;
1722b24ab676SJeff Bonwick 
1723b24ab676SJeff Bonwick 	umem_free(lr, lrsize + namesize);
1724b24ab676SJeff Bonwick }
1725b24ab676SJeff Bonwick 
1726b24ab676SJeff Bonwick /*
1727b24ab676SJeff Bonwick  * Lookup a bunch of objects.  Returns the number of objects not found.
1728b24ab676SJeff Bonwick  */
1729b24ab676SJeff Bonwick static int
1730b24ab676SJeff Bonwick ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
1731b24ab676SJeff Bonwick {
1732b24ab676SJeff Bonwick 	int missing = 0;
1733b24ab676SJeff Bonwick 	int error;
1734b24ab676SJeff Bonwick 
1735b24ab676SJeff Bonwick 	ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1736b24ab676SJeff Bonwick 
1737b24ab676SJeff Bonwick 	for (int i = 0; i < count; i++, od++) {
1738b24ab676SJeff Bonwick 		od->od_object = 0;
1739b24ab676SJeff Bonwick 		error = zap_lookup(zd->zd_os, od->od_dir, od->od_name,
1740b24ab676SJeff Bonwick 		    sizeof (uint64_t), 1, &od->od_object);
1741b24ab676SJeff Bonwick 		if (error) {
1742b24ab676SJeff Bonwick 			ASSERT(error == ENOENT);
1743b24ab676SJeff Bonwick 			ASSERT(od->od_object == 0);
1744b24ab676SJeff Bonwick 			missing++;
1745b24ab676SJeff Bonwick 		} else {
1746b24ab676SJeff Bonwick 			dmu_buf_t *db;
1747b24ab676SJeff Bonwick 			ztest_block_tag_t *bbt;
1748b24ab676SJeff Bonwick 			dmu_object_info_t doi;
1749b24ab676SJeff Bonwick 
1750b24ab676SJeff Bonwick 			ASSERT(od->od_object != 0);
1751b24ab676SJeff Bonwick 			ASSERT(missing == 0);	/* there should be no gaps */
1752b24ab676SJeff Bonwick 
1753b24ab676SJeff Bonwick 			ztest_object_lock(zd, od->od_object, RL_READER);
1754b24ab676SJeff Bonwick 			VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os,
1755b24ab676SJeff Bonwick 			    od->od_object, FTAG, &db));
1756b24ab676SJeff Bonwick 			dmu_object_info_from_db(db, &doi);
1757b24ab676SJeff Bonwick 			bbt = ztest_bt_bonus(db);
1758b24ab676SJeff Bonwick 			ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1759b24ab676SJeff Bonwick 			od->od_type = doi.doi_type;
1760b24ab676SJeff Bonwick 			od->od_blocksize = doi.doi_data_block_size;
1761b24ab676SJeff Bonwick 			od->od_gen = bbt->bt_gen;
1762b24ab676SJeff Bonwick 			dmu_buf_rele(db, FTAG);
1763b24ab676SJeff Bonwick 			ztest_object_unlock(zd, od->od_object);
1764b24ab676SJeff Bonwick 		}
1765b24ab676SJeff Bonwick 	}
1766b24ab676SJeff Bonwick 
1767b24ab676SJeff Bonwick 	return (missing);
1768b24ab676SJeff Bonwick }
1769b24ab676SJeff Bonwick 
1770b24ab676SJeff Bonwick static int
1771b24ab676SJeff Bonwick ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)
1772b24ab676SJeff Bonwick {
1773b24ab676SJeff Bonwick 	int missing = 0;
1774b24ab676SJeff Bonwick 
1775b24ab676SJeff Bonwick 	ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1776b24ab676SJeff Bonwick 
1777b24ab676SJeff Bonwick 	for (int i = 0; i < count; i++, od++) {
1778b24ab676SJeff Bonwick 		if (missing) {
1779b24ab676SJeff Bonwick 			od->od_object = 0;
1780b24ab676SJeff Bonwick 			missing++;
1781b24ab676SJeff Bonwick 			continue;
1782b24ab676SJeff Bonwick 		}
1783b24ab676SJeff Bonwick 
1784b24ab676SJeff Bonwick 		lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
1785b24ab676SJeff Bonwick 
1786b24ab676SJeff Bonwick 		lr->lr_doid = od->od_dir;
1787b24ab676SJeff Bonwick 		lr->lr_foid = 0;	/* 0 to allocate, > 0 to claim */
1788b24ab676SJeff Bonwick 		lr->lrz_type = od->od_crtype;
1789b24ab676SJeff Bonwick 		lr->lrz_blocksize = od->od_crblocksize;
1790b24ab676SJeff Bonwick 		lr->lrz_ibshift = ztest_random_ibshift();
1791b24ab676SJeff Bonwick 		lr->lrz_bonustype = DMU_OT_UINT64_OTHER;
1792b24ab676SJeff Bonwick 		lr->lrz_bonuslen = dmu_bonus_max();
1793b24ab676SJeff Bonwick 		lr->lr_gen = od->od_crgen;
1794b24ab676SJeff Bonwick 		lr->lr_crtime[0] = time(NULL);
1795b24ab676SJeff Bonwick 
1796b24ab676SJeff Bonwick 		if (ztest_replay_create(zd, lr, B_FALSE) != 0) {
1797b24ab676SJeff Bonwick 			ASSERT(missing == 0);
1798b24ab676SJeff Bonwick 			od->od_object = 0;
1799b24ab676SJeff Bonwick 			missing++;
1800b24ab676SJeff Bonwick 		} else {
1801b24ab676SJeff Bonwick 			od->od_object = lr->lr_foid;
1802b24ab676SJeff Bonwick 			od->od_type = od->od_crtype;
1803b24ab676SJeff Bonwick 			od->od_blocksize = od->od_crblocksize;
1804b24ab676SJeff Bonwick 			od->od_gen = od->od_crgen;
1805b24ab676SJeff Bonwick 			ASSERT(od->od_object != 0);
1806b24ab676SJeff Bonwick 		}
1807b24ab676SJeff Bonwick 
1808b24ab676SJeff Bonwick 		ztest_lr_free(lr, sizeof (*lr), od->od_name);
1809b24ab676SJeff Bonwick 	}
1810b24ab676SJeff Bonwick 
1811b24ab676SJeff Bonwick 	return (missing);
1812b24ab676SJeff Bonwick }
1813b24ab676SJeff Bonwick 
1814b24ab676SJeff Bonwick static int
1815b24ab676SJeff Bonwick ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count)
1816b24ab676SJeff Bonwick {
1817b24ab676SJeff Bonwick 	int missing = 0;
1818b24ab676SJeff Bonwick 	int error;
1819b24ab676SJeff Bonwick 
1820b24ab676SJeff Bonwick 	ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1821b24ab676SJeff Bonwick 
1822b24ab676SJeff Bonwick 	od += count - 1;
1823b24ab676SJeff Bonwick 
1824b24ab676SJeff Bonwick 	for (int i = count - 1; i >= 0; i--, od--) {
1825b24ab676SJeff Bonwick 		if (missing) {
1826b24ab676SJeff Bonwick 			missing++;
1827b24ab676SJeff Bonwick 			continue;
1828b24ab676SJeff Bonwick 		}
1829b24ab676SJeff Bonwick 
1830b24ab676SJeff Bonwick 		if (od->od_object == 0)
1831b24ab676SJeff Bonwick 			continue;
1832b24ab676SJeff Bonwick 
1833b24ab676SJeff Bonwick 		lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
1834b24ab676SJeff Bonwick 
1835b24ab676SJeff Bonwick 		lr->lr_doid = od->od_dir;
1836b24ab676SJeff Bonwick 
1837b24ab676SJeff Bonwick 		if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) {
1838b24ab676SJeff Bonwick 			ASSERT3U(error, ==, ENOSPC);
1839b24ab676SJeff Bonwick 			missing++;
1840b24ab676SJeff Bonwick 		} else {
1841b24ab676SJeff Bonwick 			od->od_object = 0;
1842b24ab676SJeff Bonwick 		}
1843b24ab676SJeff Bonwick 		ztest_lr_free(lr, sizeof (*lr), od->od_name);
1844b24ab676SJeff Bonwick 	}
1845b24ab676SJeff Bonwick 
1846b24ab676SJeff Bonwick 	return (missing);
1847b24ab676SJeff Bonwick }
1848b24ab676SJeff Bonwick 
1849b24ab676SJeff Bonwick static int
1850b24ab676SJeff Bonwick ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size,
1851b24ab676SJeff Bonwick     void *data)
1852b24ab676SJeff Bonwick {
1853b24ab676SJeff Bonwick 	lr_write_t *lr;
1854b24ab676SJeff Bonwick 	int error;
1855b24ab676SJeff Bonwick 
1856b24ab676SJeff Bonwick 	lr = ztest_lr_alloc(sizeof (*lr) + size, NULL);
1857b24ab676SJeff Bonwick 
1858b24ab676SJeff Bonwick 	lr->lr_foid = object;
1859b24ab676SJeff Bonwick 	lr->lr_offset = offset;
1860b24ab676SJeff Bonwick 	lr->lr_length = size;
1861b24ab676SJeff Bonwick 	lr->lr_blkoff = 0;
1862b24ab676SJeff Bonwick 	BP_ZERO(&lr->lr_blkptr);
1863b24ab676SJeff Bonwick 
1864b24ab676SJeff Bonwick 	bcopy(data, lr + 1, size);
1865b24ab676SJeff Bonwick 
1866b24ab676SJeff Bonwick 	error = ztest_replay_write(zd, lr, B_FALSE);
1867b24ab676SJeff Bonwick 
1868b24ab676SJeff Bonwick 	ztest_lr_free(lr, sizeof (*lr) + size, NULL);
1869b24ab676SJeff Bonwick 
1870b24ab676SJeff Bonwick 	return (error);
1871b24ab676SJeff Bonwick }
1872b24ab676SJeff Bonwick 
1873b24ab676SJeff Bonwick static int
1874b24ab676SJeff Bonwick ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
1875b24ab676SJeff Bonwick {
1876b24ab676SJeff Bonwick 	lr_truncate_t *lr;
1877b24ab676SJeff Bonwick 	int error;
1878b24ab676SJeff Bonwick 
1879b24ab676SJeff Bonwick 	lr = ztest_lr_alloc(sizeof (*lr), NULL);
1880b24ab676SJeff Bonwick 
1881b24ab676SJeff Bonwick 	lr->lr_foid = object;
1882b24ab676SJeff Bonwick 	lr->lr_offset = offset;
1883b24ab676SJeff Bonwick 	lr->lr_length = size;
1884b24ab676SJeff Bonwick 
1885b24ab676SJeff Bonwick 	error = ztest_replay_truncate(zd, lr, B_FALSE);
1886b24ab676SJeff Bonwick 
1887b24ab676SJeff Bonwick 	ztest_lr_free(lr, sizeof (*lr), NULL);
1888b24ab676SJeff Bonwick 
1889b24ab676SJeff Bonwick 	return (error);
1890b24ab676SJeff Bonwick }
1891b24ab676SJeff Bonwick 
1892b24ab676SJeff Bonwick static int
1893b24ab676SJeff Bonwick ztest_setattr(ztest_ds_t *zd, uint64_t object)
1894b24ab676SJeff Bonwick {
1895b24ab676SJeff Bonwick 	lr_setattr_t *lr;
1896b24ab676SJeff Bonwick 	int error;
1897b24ab676SJeff Bonwick 
1898b24ab676SJeff Bonwick 	lr = ztest_lr_alloc(sizeof (*lr), NULL);
1899b24ab676SJeff Bonwick 
1900b24ab676SJeff Bonwick 	lr->lr_foid = object;
1901b24ab676SJeff Bonwick 	lr->lr_size = 0;
1902b24ab676SJeff Bonwick 	lr->lr_mode = 0;
1903b24ab676SJeff Bonwick 
1904b24ab676SJeff Bonwick 	error = ztest_replay_setattr(zd, lr, B_FALSE);
1905b24ab676SJeff Bonwick 
1906b24ab676SJeff Bonwick 	ztest_lr_free(lr, sizeof (*lr), NULL);
1907b24ab676SJeff Bonwick 
1908b24ab676SJeff Bonwick 	return (error);
1909b24ab676SJeff Bonwick }
1910b24ab676SJeff Bonwick 
1911b24ab676SJeff Bonwick static void
1912b24ab676SJeff Bonwick ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
1913b24ab676SJeff Bonwick {
1914b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
1915b24ab676SJeff Bonwick 	dmu_tx_t *tx;
1916b24ab676SJeff Bonwick 	uint64_t txg;
1917b24ab676SJeff Bonwick 	rl_t *rl;
1918b24ab676SJeff Bonwick 
1919b24ab676SJeff Bonwick 	txg_wait_synced(dmu_objset_pool(os), 0);
1920b24ab676SJeff Bonwick 
1921b24ab676SJeff Bonwick 	ztest_object_lock(zd, object, RL_READER);
1922b24ab676SJeff Bonwick 	rl = ztest_range_lock(zd, object, offset, size, RL_WRITER);
1923b24ab676SJeff Bonwick 
1924b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
1925b24ab676SJeff Bonwick 
1926b24ab676SJeff Bonwick 	dmu_tx_hold_write(tx, object, offset, size);
1927b24ab676SJeff Bonwick 
1928b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1929b24ab676SJeff Bonwick 
1930b24ab676SJeff Bonwick 	if (txg != 0) {
1931b24ab676SJeff Bonwick 		dmu_prealloc(os, object, offset, size, tx);
1932b24ab676SJeff Bonwick 		dmu_tx_commit(tx);
1933b24ab676SJeff Bonwick 		txg_wait_synced(dmu_objset_pool(os), txg);
1934b24ab676SJeff Bonwick 	} else {
1935b24ab676SJeff Bonwick 		(void) dmu_free_long_range(os, object, offset, size);
1936b24ab676SJeff Bonwick 	}
1937b24ab676SJeff Bonwick 
1938b24ab676SJeff Bonwick 	ztest_range_unlock(rl);
1939b24ab676SJeff Bonwick 	ztest_object_unlock(zd, object);
1940b24ab676SJeff Bonwick }
1941b24ab676SJeff Bonwick 
1942b24ab676SJeff Bonwick static void
1943b24ab676SJeff Bonwick ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset)
1944b24ab676SJeff Bonwick {
1945b24ab676SJeff Bonwick 	ztest_block_tag_t wbt;
1946b24ab676SJeff Bonwick 	dmu_object_info_t doi;
1947b24ab676SJeff Bonwick 	enum ztest_io_type io_type;
1948b24ab676SJeff Bonwick 	uint64_t blocksize;
1949b24ab676SJeff Bonwick 	void *data;
1950b24ab676SJeff Bonwick 
1951b24ab676SJeff Bonwick 	VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0);
1952b24ab676SJeff Bonwick 	blocksize = doi.doi_data_block_size;
1953b24ab676SJeff Bonwick 	data = umem_alloc(blocksize, UMEM_NOFAIL);
1954b24ab676SJeff Bonwick 
1955b24ab676SJeff Bonwick 	/*
1956b24ab676SJeff Bonwick 	 * Pick an i/o type at random, biased toward writing block tags.
1957b24ab676SJeff Bonwick 	 */
1958b24ab676SJeff Bonwick 	io_type = ztest_random(ZTEST_IO_TYPES);
1959b24ab676SJeff Bonwick 	if (ztest_random(2) == 0)
1960b24ab676SJeff Bonwick 		io_type = ZTEST_IO_WRITE_TAG;
1961b24ab676SJeff Bonwick 
1962b24ab676SJeff Bonwick 	switch (io_type) {
1963b24ab676SJeff Bonwick 
1964b24ab676SJeff Bonwick 	case ZTEST_IO_WRITE_TAG:
1965b24ab676SJeff Bonwick 		ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0);
1966b24ab676SJeff Bonwick 		(void) ztest_write(zd, object, offset, sizeof (wbt), &wbt);
1967b24ab676SJeff Bonwick 		break;
1968b24ab676SJeff Bonwick 
1969b24ab676SJeff Bonwick 	case ZTEST_IO_WRITE_PATTERN:
1970b24ab676SJeff Bonwick 		(void) memset(data, 'a' + (object + offset) % 5, blocksize);
1971b24ab676SJeff Bonwick 		if (ztest_random(2) == 0) {
1972b24ab676SJeff Bonwick 			/*
1973b24ab676SJeff Bonwick 			 * Induce fletcher2 collisions to ensure that
1974b24ab676SJeff Bonwick 			 * zio_ddt_collision() detects and resolves them
1975b24ab676SJeff Bonwick 			 * when using fletcher2-verify for deduplication.
1976b24ab676SJeff Bonwick 			 */
1977b24ab676SJeff Bonwick 			((uint64_t *)data)[0] ^= 1ULL << 63;
1978b24ab676SJeff Bonwick 			((uint64_t *)data)[4] ^= 1ULL << 63;
1979b24ab676SJeff Bonwick 		}
1980b24ab676SJeff Bonwick 		(void) ztest_write(zd, object, offset, blocksize, data);
1981b24ab676SJeff Bonwick 		break;
1982b24ab676SJeff Bonwick 
1983b24ab676SJeff Bonwick 	case ZTEST_IO_WRITE_ZEROES:
1984b24ab676SJeff Bonwick 		bzero(data, blocksize);
1985b24ab676SJeff Bonwick 		(void) ztest_write(zd, object, offset, blocksize, data);
1986b24ab676SJeff Bonwick 		break;
1987b24ab676SJeff Bonwick 
1988b24ab676SJeff Bonwick 	case ZTEST_IO_TRUNCATE:
1989b24ab676SJeff Bonwick 		(void) ztest_truncate(zd, object, offset, blocksize);
1990b24ab676SJeff Bonwick 		break;
1991b24ab676SJeff Bonwick 
1992b24ab676SJeff Bonwick 	case ZTEST_IO_SETATTR:
1993b24ab676SJeff Bonwick 		(void) ztest_setattr(zd, object);
1994b24ab676SJeff Bonwick 		break;
1995b24ab676SJeff Bonwick 	}
1996b24ab676SJeff Bonwick 
1997b24ab676SJeff Bonwick 	umem_free(data, blocksize);
1998b24ab676SJeff Bonwick }
1999b24ab676SJeff Bonwick 
2000b24ab676SJeff Bonwick /*
2001b24ab676SJeff Bonwick  * Initialize an object description template.
2002b24ab676SJeff Bonwick  */
2003b24ab676SJeff Bonwick static void
2004b24ab676SJeff Bonwick ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index,
2005b24ab676SJeff Bonwick     dmu_object_type_t type, uint64_t blocksize, uint64_t gen)
2006b24ab676SJeff Bonwick {
2007b24ab676SJeff Bonwick 	od->od_dir = ZTEST_DIROBJ;
2008b24ab676SJeff Bonwick 	od->od_object = 0;
2009b24ab676SJeff Bonwick 
2010b24ab676SJeff Bonwick 	od->od_crtype = type;
2011b24ab676SJeff Bonwick 	od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize();
2012b24ab676SJeff Bonwick 	od->od_crgen = gen;
2013b24ab676SJeff Bonwick 
2014b24ab676SJeff Bonwick 	od->od_type = DMU_OT_NONE;
2015b24ab676SJeff Bonwick 	od->od_blocksize = 0;
2016b24ab676SJeff Bonwick 	od->od_gen = 0;
2017b24ab676SJeff Bonwick 
2018b24ab676SJeff Bonwick 	(void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]",
2019b24ab676SJeff Bonwick 	    tag, (int64_t)id, index);
2020b24ab676SJeff Bonwick }
2021b24ab676SJeff Bonwick 
2022b24ab676SJeff Bonwick /*
2023b24ab676SJeff Bonwick  * Lookup or create the objects for a test using the od template.
2024b24ab676SJeff Bonwick  * If the objects do not all exist, or if 'remove' is specified,
2025b24ab676SJeff Bonwick  * remove any existing objects and create new ones.  Otherwise,
2026b24ab676SJeff Bonwick  * use the existing objects.
2027b24ab676SJeff Bonwick  */
2028b24ab676SJeff Bonwick static int
2029b24ab676SJeff Bonwick ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove)
2030b24ab676SJeff Bonwick {
2031b24ab676SJeff Bonwick 	int count = size / sizeof (*od);
2032b24ab676SJeff Bonwick 	int rv = 0;
2033b24ab676SJeff Bonwick 
2034b24ab676SJeff Bonwick 	VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0);
2035b24ab676SJeff Bonwick 	if ((ztest_lookup(zd, od, count) != 0 || remove) &&
2036b24ab676SJeff Bonwick 	    (ztest_remove(zd, od, count) != 0 ||
2037b24ab676SJeff Bonwick 	    ztest_create(zd, od, count) != 0))
2038b24ab676SJeff Bonwick 		rv = -1;
2039b24ab676SJeff Bonwick 	zd->zd_od = od;
2040b24ab676SJeff Bonwick 	VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0);
2041b24ab676SJeff Bonwick 
2042b24ab676SJeff Bonwick 	return (rv);
2043b24ab676SJeff Bonwick }
2044b24ab676SJeff Bonwick 
2045b24ab676SJeff Bonwick /* ARGSUSED */
2046b24ab676SJeff Bonwick void
2047b24ab676SJeff Bonwick ztest_zil_commit(ztest_ds_t *zd, uint64_t id)
2048b24ab676SJeff Bonwick {
2049b24ab676SJeff Bonwick 	zilog_t *zilog = zd->zd_zilog;
2050b24ab676SJeff Bonwick 
2051*5002558fSNeil Perrin 	zil_commit(zilog, ztest_random(ZTEST_OBJECTS));
2052b24ab676SJeff Bonwick 
2053b24ab676SJeff Bonwick 	/*
2054b24ab676SJeff Bonwick 	 * Remember the committed values in zd, which is in parent/child
2055b24ab676SJeff Bonwick 	 * shared memory.  If we die, the next iteration of ztest_run()
2056b24ab676SJeff Bonwick 	 * will verify that the log really does contain this record.
2057b24ab676SJeff Bonwick 	 */
2058b24ab676SJeff Bonwick 	mutex_enter(&zilog->zl_lock);
2059b24ab676SJeff Bonwick 	ASSERT(zd->zd_seq <= zilog->zl_commit_lr_seq);
2060b24ab676SJeff Bonwick 	zd->zd_seq = zilog->zl_commit_lr_seq;
2061b24ab676SJeff Bonwick 	mutex_exit(&zilog->zl_lock);
2062b24ab676SJeff Bonwick }
2063b24ab676SJeff Bonwick 
2064b24ab676SJeff Bonwick /*
2065fa9e4066Sahrens  * Verify that we can't destroy an active pool, create an existing pool,
2066fa9e4066Sahrens  * or create a pool with a bad vdev spec.
2067fa9e4066Sahrens  */
2068b24ab676SJeff Bonwick /* ARGSUSED */
2069fa9e4066Sahrens void
2070b24ab676SJeff Bonwick ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
2071fa9e4066Sahrens {
2072b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
2073fa9e4066Sahrens 	spa_t *spa;
2074fa9e4066Sahrens 	nvlist_t *nvroot;
2075fa9e4066Sahrens 
2076fa9e4066Sahrens 	/*
2077fa9e4066Sahrens 	 * Attempt to create using a bad file.
2078fa9e4066Sahrens 	 */
2079e14bb325SJeff Bonwick 	nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 0, 1);
2080b24ab676SJeff Bonwick 	VERIFY3U(ENOENT, ==,
2081b24ab676SJeff Bonwick 	    spa_create("ztest_bad_file", nvroot, NULL, NULL, NULL));
2082fa9e4066Sahrens 	nvlist_free(nvroot);
2083fa9e4066Sahrens 
2084fa9e4066Sahrens 	/*
2085fa9e4066Sahrens 	 * Attempt to create using a bad mirror.
2086fa9e4066Sahrens 	 */
2087e14bb325SJeff Bonwick 	nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 2, 1);
2088b24ab676SJeff Bonwick 	VERIFY3U(ENOENT, ==,
2089b24ab676SJeff Bonwick 	    spa_create("ztest_bad_mirror", nvroot, NULL, NULL, NULL));
2090fa9e4066Sahrens 	nvlist_free(nvroot);
2091fa9e4066Sahrens 
2092fa9e4066Sahrens 	/*
2093fa9e4066Sahrens 	 * Attempt to create an existing pool.  It shouldn't matter
2094fa9e4066Sahrens 	 * what's in the nvroot; we should fail with EEXIST.
2095fa9e4066Sahrens 	 */
2096b24ab676SJeff Bonwick 	(void) rw_rdlock(&zs->zs_name_lock);
2097e14bb325SJeff Bonwick 	nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 0, 1);
2098b24ab676SJeff Bonwick 	VERIFY3U(EEXIST, ==, spa_create(zs->zs_pool, nvroot, NULL, NULL, NULL));
2099fa9e4066Sahrens 	nvlist_free(nvroot);
2100b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_open(zs->zs_pool, &spa, FTAG));
2101b24ab676SJeff Bonwick 	VERIFY3U(EBUSY, ==, spa_destroy(zs->zs_pool));
2102fa9e4066Sahrens 	spa_close(spa, FTAG);
2103b24ab676SJeff Bonwick 
2104b24ab676SJeff Bonwick 	(void) rw_unlock(&zs->zs_name_lock);
2105fa9e4066Sahrens }
2106fa9e4066Sahrens 
210731157203SJeff Bonwick static vdev_t *
210831157203SJeff Bonwick vdev_lookup_by_path(vdev_t *vd, const char *path)
210931157203SJeff Bonwick {
211031157203SJeff Bonwick 	vdev_t *mvd;
211131157203SJeff Bonwick 
211231157203SJeff Bonwick 	if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0)
211331157203SJeff Bonwick 		return (vd);
211431157203SJeff Bonwick 
211531157203SJeff Bonwick 	for (int c = 0; c < vd->vdev_children; c++)
211631157203SJeff Bonwick 		if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) !=
211731157203SJeff Bonwick 		    NULL)
211831157203SJeff Bonwick 			return (mvd);
211931157203SJeff Bonwick 
212031157203SJeff Bonwick 	return (NULL);
212131157203SJeff Bonwick }
212231157203SJeff Bonwick 
2123fa9e4066Sahrens /*
212488ecc943SGeorge Wilson  * Find the first available hole which can be used as a top-level.
212588ecc943SGeorge Wilson  */
212688ecc943SGeorge Wilson int
212788ecc943SGeorge Wilson find_vdev_hole(spa_t *spa)
212888ecc943SGeorge Wilson {
212988ecc943SGeorge Wilson 	vdev_t *rvd = spa->spa_root_vdev;
213088ecc943SGeorge Wilson 	int c;
213188ecc943SGeorge Wilson 
213288ecc943SGeorge Wilson 	ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV);
213388ecc943SGeorge Wilson 
213488ecc943SGeorge Wilson 	for (c = 0; c < rvd->vdev_children; c++) {
213588ecc943SGeorge Wilson 		vdev_t *cvd = rvd->vdev_child[c];
213688ecc943SGeorge Wilson 
213788ecc943SGeorge Wilson 		if (cvd->vdev_ishole)
213888ecc943SGeorge Wilson 			break;
213988ecc943SGeorge Wilson 	}
214088ecc943SGeorge Wilson 	return (c);
214188ecc943SGeorge Wilson }
214288ecc943SGeorge Wilson 
214388ecc943SGeorge Wilson /*
2144fa9e4066Sahrens  * Verify that vdev_add() works as expected.
2145fa9e4066Sahrens  */
2146b24ab676SJeff Bonwick /* ARGSUSED */
2147fa9e4066Sahrens void
2148b24ab676SJeff Bonwick ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
2149fa9e4066Sahrens {
2150b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
2151b24ab676SJeff Bonwick 	spa_t *spa = zs->zs_spa;
21521195e687SMark J Musante 	uint64_t leaves;
215388ecc943SGeorge Wilson 	uint64_t guid;
2154fa9e4066Sahrens 	nvlist_t *nvroot;
2155fa9e4066Sahrens 	int error;
2156fa9e4066Sahrens 
2157b24ab676SJeff Bonwick 	VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0);
21581195e687SMark J Musante 	leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * zopt_raidz;
2159fa9e4066Sahrens 
2160e14bb325SJeff Bonwick 	spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2161fa9e4066Sahrens 
216288ecc943SGeorge Wilson 	ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves;
2163fa9e4066Sahrens 
216488ecc943SGeorge Wilson 	/*
216588ecc943SGeorge Wilson 	 * If we have slogs then remove them 1/4 of the time.
216688ecc943SGeorge Wilson 	 */
216788ecc943SGeorge Wilson 	if (spa_has_slogs(spa) && ztest_random(4) == 0) {
216888ecc943SGeorge Wilson 		/*
216988ecc943SGeorge Wilson 		 * Grab the guid from the head of the log class rotor.
217088ecc943SGeorge Wilson 		 */
2171b24ab676SJeff Bonwick 		guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid;
217288ecc943SGeorge Wilson 
217388ecc943SGeorge Wilson 		spa_config_exit(spa, SCL_VDEV, FTAG);
217488ecc943SGeorge Wilson 
217588ecc943SGeorge Wilson 		/*
217688ecc943SGeorge Wilson 		 * We have to grab the zs_name_lock as writer to
217788ecc943SGeorge Wilson 		 * prevent a race between removing a slog (dmu_objset_find)
217888ecc943SGeorge Wilson 		 * and destroying a dataset. Removing the slog will
217988ecc943SGeorge Wilson 		 * grab a reference on the dataset which may cause
218088ecc943SGeorge Wilson 		 * dmu_objset_destroy() to fail with EBUSY thus
218188ecc943SGeorge Wilson 		 * leaving the dataset in an inconsistent state.
218288ecc943SGeorge Wilson 		 */
2183b24ab676SJeff Bonwick 		VERIFY(rw_wrlock(&ztest_shared->zs_name_lock) == 0);
218488ecc943SGeorge Wilson 		error = spa_vdev_remove(spa, guid, B_FALSE);
2185b24ab676SJeff Bonwick 		VERIFY(rw_unlock(&ztest_shared->zs_name_lock) == 0);
218688ecc943SGeorge Wilson 
218788ecc943SGeorge Wilson 		if (error && error != EEXIST)
218888ecc943SGeorge Wilson 			fatal(0, "spa_vdev_remove() = %d", error);
218988ecc943SGeorge Wilson 	} else {
2190e14bb325SJeff Bonwick 		spa_config_exit(spa, SCL_VDEV, FTAG);
2191fa9e4066Sahrens 
21928654d025Sperrin 		/*
21938654d025Sperrin 		 * Make 1/4 of the devices be log devices.
21948654d025Sperrin 		 */
2195e14bb325SJeff Bonwick 		nvroot = make_vdev_root(NULL, NULL, zopt_vdev_size, 0,
21961195e687SMark J Musante 		    ztest_random(4) == 0, zopt_raidz, zs->zs_mirrors, 1);
21978654d025Sperrin 
2198fa9e4066Sahrens 		error = spa_vdev_add(spa, nvroot);
2199fa9e4066Sahrens 		nvlist_free(nvroot);
2200fa9e4066Sahrens 
2201fa9e4066Sahrens 		if (error == ENOSPC)
2202fa9e4066Sahrens 			ztest_record_enospc("spa_vdev_add");
2203fa9e4066Sahrens 		else if (error != 0)
2204fa9e4066Sahrens 			fatal(0, "spa_vdev_add() = %d", error);
2205e14bb325SJeff Bonwick 	}
2206fa9e4066Sahrens 
2207b24ab676SJeff Bonwick 	VERIFY(mutex_unlock(&ztest_shared->zs_vdev_lock) == 0);
220888ecc943SGeorge Wilson }
220988ecc943SGeorge Wilson 
2210e14bb325SJeff Bonwick /*
2211e14bb325SJeff Bonwick  * Verify that adding/removing aux devices (l2arc, hot spare) works as expected.
2212e14bb325SJeff Bonwick  */
2213b24ab676SJeff Bonwick /* ARGSUSED */
2214e14bb325SJeff Bonwick void
2215b24ab676SJeff Bonwick ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
2216e14bb325SJeff Bonwick {
2217b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
2218b24ab676SJeff Bonwick 	spa_t *spa = zs->zs_spa;
221931157203SJeff Bonwick 	vdev_t *rvd = spa->spa_root_vdev;
2220e14bb325SJeff Bonwick 	spa_aux_vdev_t *sav;
2221e14bb325SJeff Bonwick 	char *aux;
2222e14bb325SJeff Bonwick 	uint64_t guid = 0;
2223e14bb325SJeff Bonwick 	int error;
2224e14bb325SJeff Bonwick 
222531157203SJeff Bonwick 	if (ztest_random(2) == 0) {
2226e14bb325SJeff Bonwick 		sav = &spa->spa_spares;
2227e14bb325SJeff Bonwick 		aux = ZPOOL_CONFIG_SPARES;
2228e14bb325SJeff Bonwick 	} else {
2229e14bb325SJeff Bonwick 		sav = &spa->spa_l2cache;
2230e14bb325SJeff Bonwick 		aux = ZPOOL_CONFIG_L2CACHE;
2231e14bb325SJeff Bonwick 	}
2232e14bb325SJeff Bonwick 
2233b24ab676SJeff Bonwick 	VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0);
2234e14bb325SJeff Bonwick 
2235e14bb325SJeff Bonwick 	spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2236e14bb325SJeff Bonwick 
2237e14bb325SJeff Bonwick 	if (sav->sav_count != 0 && ztest_random(4) == 0) {
2238e14bb325SJeff Bonwick 		/*
2239e14bb325SJeff Bonwick 		 * Pick a random device to remove.
2240e14bb325SJeff Bonwick 		 */
2241e14bb325SJeff Bonwick 		guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid;
2242e14bb325SJeff Bonwick 	} else {
2243e14bb325SJeff Bonwick 		/*
2244e14bb325SJeff Bonwick 		 * Find an unused device we can add.
2245e14bb325SJeff Bonwick 		 */
2246b24ab676SJeff Bonwick 		zs->zs_vdev_aux = 0;
2247e14bb325SJeff Bonwick 		for (;;) {
2248e14bb325SJeff Bonwick 			char path[MAXPATHLEN];
2249e14bb325SJeff Bonwick 			int c;
2250e14bb325SJeff Bonwick 			(void) sprintf(path, ztest_aux_template, zopt_dir,
2251b24ab676SJeff Bonwick 			    zopt_pool, aux, zs->zs_vdev_aux);
2252e14bb325SJeff Bonwick 			for (c = 0; c < sav->sav_count; c++)
2253e14bb325SJeff Bonwick 				if (strcmp(sav->sav_vdevs[c]->vdev_path,
2254e14bb325SJeff Bonwick 				    path) == 0)
2255e14bb325SJeff Bonwick 					break;
225631157203SJeff Bonwick 			if (c == sav->sav_count &&
225731157203SJeff Bonwick 			    vdev_lookup_by_path(rvd, path) == NULL)
2258e14bb325SJeff Bonwick 				break;
2259b24ab676SJeff Bonwick 			zs->zs_vdev_aux++;
2260e14bb325SJeff Bonwick 		}
2261e14bb325SJeff Bonwick 	}
2262e14bb325SJeff Bonwick 
2263e14bb325SJeff Bonwick 	spa_config_exit(spa, SCL_VDEV, FTAG);
2264e14bb325SJeff Bonwick 
2265e14bb325SJeff Bonwick 	if (guid == 0) {
2266e14bb325SJeff Bonwick 		/*
2267e14bb325SJeff Bonwick 		 * Add a new device.
2268e14bb325SJeff Bonwick 		 */
226931157203SJeff Bonwick 		nvlist_t *nvroot = make_vdev_root(NULL, aux,
227031157203SJeff Bonwick 		    (zopt_vdev_size * 5) / 4, 0, 0, 0, 0, 1);
2271e14bb325SJeff Bonwick 		error = spa_vdev_add(spa, nvroot);
2272e14bb325SJeff Bonwick 		if (error != 0)
2273e14bb325SJeff Bonwick 			fatal(0, "spa_vdev_add(%p) = %d", nvroot, error);
2274e14bb325SJeff Bonwick 		nvlist_free(nvroot);
2275e14bb325SJeff Bonwick 	} else {
2276e14bb325SJeff Bonwick 		/*
2277e14bb325SJeff Bonwick 		 * Remove an existing device.  Sometimes, dirty its
2278e14bb325SJeff Bonwick 		 * vdev state first to make sure we handle removal
2279e14bb325SJeff Bonwick 		 * of devices that have pending state changes.
2280e14bb325SJeff Bonwick 		 */
2281e14bb325SJeff Bonwick 		if (ztest_random(2) == 0)
2282573ca77eSGeorge Wilson 			(void) vdev_online(spa, guid, 0, NULL);
2283e14bb325SJeff Bonwick 
2284e14bb325SJeff Bonwick 		error = spa_vdev_remove(spa, guid, B_FALSE);
2285e14bb325SJeff Bonwick 		if (error != 0 && error != EBUSY)
2286e14bb325SJeff Bonwick 			fatal(0, "spa_vdev_remove(%llu) = %d", guid, error);
2287e14bb325SJeff Bonwick 	}
2288e14bb325SJeff Bonwick 
2289b24ab676SJeff Bonwick 	VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
2290fa9e4066Sahrens }
2291fa9e4066Sahrens 
2292fa9e4066Sahrens /*
22931195e687SMark J Musante  * split a pool if it has mirror tlvdevs
22941195e687SMark J Musante  */
22951195e687SMark J Musante /* ARGSUSED */
22961195e687SMark J Musante void
22971195e687SMark J Musante ztest_split_pool(ztest_ds_t *zd, uint64_t id)
22981195e687SMark J Musante {
22991195e687SMark J Musante 	ztest_shared_t *zs = ztest_shared;
23001195e687SMark J Musante 	spa_t *spa = zs->zs_spa;
23011195e687SMark J Musante 	vdev_t *rvd = spa->spa_root_vdev;
23021195e687SMark J Musante 	nvlist_t *tree, **child, *config, *split, **schild;
23031195e687SMark J Musante 	uint_t c, children, schildren = 0, lastlogid = 0;
23041195e687SMark J Musante 	int error = 0;
23051195e687SMark J Musante 
23061195e687SMark J Musante 	VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0);
23071195e687SMark J Musante 
23081195e687SMark J Musante 	/* ensure we have a useable config; mirrors of raidz aren't supported */
23091195e687SMark J Musante 	if (zs->zs_mirrors < 3 || zopt_raidz > 1) {
23101195e687SMark J Musante 		VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
23111195e687SMark J Musante 		return;
23121195e687SMark J Musante 	}
23131195e687SMark J Musante 
23141195e687SMark J Musante 	/* clean up the old pool, if any */
23151195e687SMark J Musante 	(void) spa_destroy("splitp");
23161195e687SMark J Musante 
23171195e687SMark J Musante 	spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
23181195e687SMark J Musante 
23191195e687SMark J Musante 	/* generate a config from the existing config */
232098295d61SMark J Musante 	mutex_enter(&spa->spa_props_lock);
23211195e687SMark J Musante 	VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE,
23221195e687SMark J Musante 	    &tree) == 0);
232398295d61SMark J Musante 	mutex_exit(&spa->spa_props_lock);
232498295d61SMark J Musante 
23251195e687SMark J Musante 	VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
23261195e687SMark J Musante 	    &children) == 0);
23271195e687SMark J Musante 
23281195e687SMark J Musante 	schild = malloc(rvd->vdev_children * sizeof (nvlist_t *));
23291195e687SMark J Musante 	for (c = 0; c < children; c++) {
23301195e687SMark J Musante 		vdev_t *tvd = rvd->vdev_child[c];
23311195e687SMark J Musante 		nvlist_t **mchild;
23321195e687SMark J Musante 		uint_t mchildren;
23331195e687SMark J Musante 
23341195e687SMark J Musante 		if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) {
23351195e687SMark J Musante 			VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME,
23361195e687SMark J Musante 			    0) == 0);
23371195e687SMark J Musante 			VERIFY(nvlist_add_string(schild[schildren],
23381195e687SMark J Musante 			    ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0);
23391195e687SMark J Musante 			VERIFY(nvlist_add_uint64(schild[schildren],
23401195e687SMark J Musante 			    ZPOOL_CONFIG_IS_HOLE, 1) == 0);
23411195e687SMark J Musante 			if (lastlogid == 0)
23421195e687SMark J Musante 				lastlogid = schildren;
23431195e687SMark J Musante 			++schildren;
23441195e687SMark J Musante 			continue;
23451195e687SMark J Musante 		}
23461195e687SMark J Musante 		lastlogid = 0;
23471195e687SMark J Musante 		VERIFY(nvlist_lookup_nvlist_array(child[c],
23481195e687SMark J Musante 		    ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
23491195e687SMark J Musante 		VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0);
23501195e687SMark J Musante 	}
23511195e687SMark J Musante 
23521195e687SMark J Musante 	/* OK, create a config that can be used to split */
23531195e687SMark J Musante 	VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0);
23541195e687SMark J Musante 	VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE,
23551195e687SMark J Musante 	    VDEV_TYPE_ROOT) == 0);
23561195e687SMark J Musante 	VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild,
23571195e687SMark J Musante 	    lastlogid != 0 ? lastlogid : schildren) == 0);
23581195e687SMark J Musante 
23591195e687SMark J Musante 	VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0);
23601195e687SMark J Musante 	VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0);
23611195e687SMark J Musante 
23621195e687SMark J Musante 	for (c = 0; c < schildren; c++)
23631195e687SMark J Musante 		nvlist_free(schild[c]);
23641195e687SMark J Musante 	free(schild);
23651195e687SMark J Musante 	nvlist_free(split);
23661195e687SMark J Musante 
23671195e687SMark J Musante 	spa_config_exit(spa, SCL_VDEV, FTAG);
23681195e687SMark J Musante 
23691195e687SMark J Musante 	(void) rw_wrlock(&zs->zs_name_lock);
23701195e687SMark J Musante 	error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
23711195e687SMark J Musante 	(void) rw_unlock(&zs->zs_name_lock);
23721195e687SMark J Musante 
23731195e687SMark J Musante 	nvlist_free(config);
23741195e687SMark J Musante 
23751195e687SMark J Musante 	if (error == 0) {
23761195e687SMark J Musante 		(void) printf("successful split - results:\n");
23771195e687SMark J Musante 		mutex_enter(&spa_namespace_lock);
23781195e687SMark J Musante 		show_pool_stats(spa);
23791195e687SMark J Musante 		show_pool_stats(spa_lookup("splitp"));
23801195e687SMark J Musante 		mutex_exit(&spa_namespace_lock);
23811195e687SMark J Musante 		++zs->zs_splits;
23821195e687SMark J Musante 		--zs->zs_mirrors;
23831195e687SMark J Musante 	}
23841195e687SMark J Musante 	VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
23851195e687SMark J Musante 
23861195e687SMark J Musante }
23871195e687SMark J Musante 
23881195e687SMark J Musante /*
2389fa9e4066Sahrens  * Verify that we can attach and detach devices.
2390fa9e4066Sahrens  */
2391b24ab676SJeff Bonwick /* ARGSUSED */
2392fa9e4066Sahrens void
2393b24ab676SJeff Bonwick ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
2394fa9e4066Sahrens {
2395b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
2396b24ab676SJeff Bonwick 	spa_t *spa = zs->zs_spa;
239731157203SJeff Bonwick 	spa_aux_vdev_t *sav = &spa->spa_spares;
2398fa9e4066Sahrens 	vdev_t *rvd = spa->spa_root_vdev;
2399ea8dc4b6Seschrock 	vdev_t *oldvd, *newvd, *pvd;
2400e14bb325SJeff Bonwick 	nvlist_t *root;
24011195e687SMark J Musante 	uint64_t leaves;
2402fa9e4066Sahrens 	uint64_t leaf, top;
2403ecc2d604Sbonwick 	uint64_t ashift = ztest_get_ashift();
24048ad4d6ddSJeff Bonwick 	uint64_t oldguid, pguid;
2405ea8dc4b6Seschrock 	size_t oldsize, newsize;
2406ea8dc4b6Seschrock 	char oldpath[MAXPATHLEN], newpath[MAXPATHLEN];
2407fa9e4066Sahrens 	int replacing;
24089af0a4dfSJeff Bonwick 	int oldvd_has_siblings = B_FALSE;
240931157203SJeff Bonwick 	int newvd_is_spare = B_FALSE;
241031157203SJeff Bonwick 	int oldvd_is_log;
2411fa9e4066Sahrens 	int error, expected_error;
2412fa9e4066Sahrens 
2413b24ab676SJeff Bonwick 	VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0);
24141195e687SMark J Musante 	leaves = MAX(zs->zs_mirrors, 1) * zopt_raidz;
2415fa9e4066Sahrens 
2416e14bb325SJeff Bonwick 	spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2417fa9e4066Sahrens 
2418fa9e4066Sahrens 	/*
2419fa9e4066Sahrens 	 * Decide whether to do an attach or a replace.
2420fa9e4066Sahrens 	 */
2421fa9e4066Sahrens 	replacing = ztest_random(2);
2422fa9e4066Sahrens 
2423fa9e4066Sahrens 	/*
2424fa9e4066Sahrens 	 * Pick a random top-level vdev.
2425fa9e4066Sahrens 	 */
2426b24ab676SJeff Bonwick 	top = ztest_random_vdev_top(spa, B_TRUE);
2427fa9e4066Sahrens 
2428fa9e4066Sahrens 	/*
2429fa9e4066Sahrens 	 * Pick a random leaf within it.
2430fa9e4066Sahrens 	 */
2431d41c4376SMark J Musante 	leaf = ztest_random(leaves);
2432fa9e4066Sahrens 
2433fa9e4066Sahrens 	/*
243431157203SJeff Bonwick 	 * Locate this vdev.
2435fa9e4066Sahrens 	 */
243631157203SJeff Bonwick 	oldvd = rvd->vdev_child[top];
24371195e687SMark J Musante 	if (zs->zs_mirrors >= 1) {
24388ad4d6ddSJeff Bonwick 		ASSERT(oldvd->vdev_ops == &vdev_mirror_ops);
24391195e687SMark J Musante 		ASSERT(oldvd->vdev_children >= zs->zs_mirrors);
244031157203SJeff Bonwick 		oldvd = oldvd->vdev_child[leaf / zopt_raidz];
24418ad4d6ddSJeff Bonwick 	}
24428ad4d6ddSJeff Bonwick 	if (zopt_raidz > 1) {
24438ad4d6ddSJeff Bonwick 		ASSERT(oldvd->vdev_ops == &vdev_raidz_ops);
24448ad4d6ddSJeff Bonwick 		ASSERT(oldvd->vdev_children == zopt_raidz);
244531157203SJeff Bonwick 		oldvd = oldvd->vdev_child[leaf % zopt_raidz];
24468ad4d6ddSJeff Bonwick 	}
2447fa9e4066Sahrens 
2448fa9e4066Sahrens 	/*
244931157203SJeff Bonwick 	 * If we're already doing an attach or replace, oldvd may be a
245031157203SJeff Bonwick 	 * mirror vdev -- in which case, pick a random child.
2451fa9e4066Sahrens 	 */
245231157203SJeff Bonwick 	while (oldvd->vdev_children != 0) {
24539af0a4dfSJeff Bonwick 		oldvd_has_siblings = B_TRUE;
24548ad4d6ddSJeff Bonwick 		ASSERT(oldvd->vdev_children >= 2);
24558ad4d6ddSJeff Bonwick 		oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)];
245631157203SJeff Bonwick 	}
2457fa9e4066Sahrens 
245831157203SJeff Bonwick 	oldguid = oldvd->vdev_guid;
2459573ca77eSGeorge Wilson 	oldsize = vdev_get_min_asize(oldvd);
246031157203SJeff Bonwick 	oldvd_is_log = oldvd->vdev_top->vdev_islog;
246131157203SJeff Bonwick 	(void) strcpy(oldpath, oldvd->vdev_path);
2462ea8dc4b6Seschrock 	pvd = oldvd->vdev_parent;
24638ad4d6ddSJeff Bonwick 	pguid = pvd->vdev_guid;
2464fa9e4066Sahrens 
2465fa9e4066Sahrens 	/*
24669af0a4dfSJeff Bonwick 	 * If oldvd has siblings, then half of the time, detach it.
24679af0a4dfSJeff Bonwick 	 */
24689af0a4dfSJeff Bonwick 	if (oldvd_has_siblings && ztest_random(2) == 0) {
24699af0a4dfSJeff Bonwick 		spa_config_exit(spa, SCL_VDEV, FTAG);
24708ad4d6ddSJeff Bonwick 		error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE);
24718ad4d6ddSJeff Bonwick 		if (error != 0 && error != ENODEV && error != EBUSY &&
24728ad4d6ddSJeff Bonwick 		    error != ENOTSUP)
24738ad4d6ddSJeff Bonwick 			fatal(0, "detach (%s) returned %d", oldpath, error);
2474b24ab676SJeff Bonwick 		VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
24759af0a4dfSJeff Bonwick 		return;
24769af0a4dfSJeff Bonwick 	}
24779af0a4dfSJeff Bonwick 
24789af0a4dfSJeff Bonwick 	/*
247931157203SJeff Bonwick 	 * For the new vdev, choose with equal probability between the two
248031157203SJeff Bonwick 	 * standard paths (ending in either 'a' or 'b') or a random hot spare.
248131157203SJeff Bonwick 	 */
248231157203SJeff Bonwick 	if (sav->sav_count != 0 && ztest_random(3) == 0) {
248331157203SJeff Bonwick 		newvd = sav->sav_vdevs[ztest_random(sav->sav_count)];
248431157203SJeff Bonwick 		newvd_is_spare = B_TRUE;
248531157203SJeff Bonwick 		(void) strcpy(newpath, newvd->vdev_path);
248631157203SJeff Bonwick 	} else {
248731157203SJeff Bonwick 		(void) snprintf(newpath, sizeof (newpath), ztest_dev_template,
248831157203SJeff Bonwick 		    zopt_dir, zopt_pool, top * leaves + leaf);
248931157203SJeff Bonwick 		if (ztest_random(2) == 0)
249031157203SJeff Bonwick 			newpath[strlen(newpath) - 1] = 'b';
249131157203SJeff Bonwick 		newvd = vdev_lookup_by_path(rvd, newpath);
249231157203SJeff Bonwick 	}
249331157203SJeff Bonwick 
249431157203SJeff Bonwick 	if (newvd) {
2495573ca77eSGeorge Wilson 		newsize = vdev_get_min_asize(newvd);
249631157203SJeff Bonwick 	} else {
249731157203SJeff Bonwick 		/*
2498ea8dc4b6Seschrock 		 * Make newsize a little bigger or smaller than oldsize.
2499fa9e4066Sahrens 		 * If it's smaller, the attach should fail.
2500fa9e4066Sahrens 		 * If it's larger, and we're doing a replace,
2501fa9e4066Sahrens 		 * we should get dynamic LUN growth when we're done.
2502fa9e4066Sahrens 		 */
2503ea8dc4b6Seschrock 		newsize = 10 * oldsize / (9 + ztest_random(3));
250431157203SJeff Bonwick 	}
2505fa9e4066Sahrens 
2506fa9e4066Sahrens 	/*
2507fa9e4066Sahrens 	 * If pvd is not a mirror or root, the attach should fail with ENOTSUP,
2508fa9e4066Sahrens 	 * unless it's a replace; in that case any non-replacing parent is OK.
2509fa9e4066Sahrens 	 *
2510ea8dc4b6Seschrock 	 * If newvd is already part of the pool, it should fail with EBUSY.
2511fa9e4066Sahrens 	 *
2512ea8dc4b6Seschrock 	 * If newvd is too small, it should fail with EOVERFLOW.
2513fa9e4066Sahrens 	 */
251431157203SJeff Bonwick 	if (pvd->vdev_ops != &vdev_mirror_ops &&
251531157203SJeff Bonwick 	    pvd->vdev_ops != &vdev_root_ops && (!replacing ||
251631157203SJeff Bonwick 	    pvd->vdev_ops == &vdev_replacing_ops ||
251731157203SJeff Bonwick 	    pvd->vdev_ops == &vdev_spare_ops))
2518fa9e4066Sahrens 		expected_error = ENOTSUP;
251931157203SJeff Bonwick 	else if (newvd_is_spare && (!replacing || oldvd_is_log))
252031157203SJeff Bonwick 		expected_error = ENOTSUP;
252131157203SJeff Bonwick 	else if (newvd == oldvd)
252231157203SJeff Bonwick 		expected_error = replacing ? 0 : EBUSY;
252331157203SJeff Bonwick 	else if (vdev_lookup_by_path(rvd, newpath) != NULL)
252431157203SJeff Bonwick 		expected_error = EBUSY;
2525ea8dc4b6Seschrock 	else if (newsize < oldsize)
2526fa9e4066Sahrens 		expected_error = EOVERFLOW;
2527ecc2d604Sbonwick 	else if (ashift > oldvd->vdev_top->vdev_ashift)
2528ecc2d604Sbonwick 		expected_error = EDOM;
2529fa9e4066Sahrens 	else
2530fa9e4066Sahrens 		expected_error = 0;
2531fa9e4066Sahrens 
2532e14bb325SJeff Bonwick 	spa_config_exit(spa, SCL_VDEV, FTAG);
2533fa9e4066Sahrens 
2534fa9e4066Sahrens 	/*
2535ea8dc4b6Seschrock 	 * Build the nvlist describing newpath.
2536fa9e4066Sahrens 	 */
2537e14bb325SJeff Bonwick 	root = make_vdev_root(newpath, NULL, newvd == NULL ? newsize : 0,
2538e14bb325SJeff Bonwick 	    ashift, 0, 0, 0, 1);
2539fa9e4066Sahrens 
254031157203SJeff Bonwick 	error = spa_vdev_attach(spa, oldguid, root, replacing);
2541fa9e4066Sahrens 
2542fa9e4066Sahrens 	nvlist_free(root);
2543fa9e4066Sahrens 
2544fa9e4066Sahrens 	/*
2545fa9e4066Sahrens 	 * If our parent was the replacing vdev, but the replace completed,
2546fa9e4066Sahrens 	 * then instead of failing with ENOTSUP we may either succeed,
2547fa9e4066Sahrens 	 * fail with ENODEV, or fail with EOVERFLOW.
2548fa9e4066Sahrens 	 */
2549fa9e4066Sahrens 	if (expected_error == ENOTSUP &&
2550fa9e4066Sahrens 	    (error == 0 || error == ENODEV || error == EOVERFLOW))
2551fa9e4066Sahrens 		expected_error = error;
2552fa9e4066Sahrens 
2553f0aa80d4Sbonwick 	/*
2554f0aa80d4Sbonwick 	 * If someone grew the LUN, the replacement may be too small.
2555f0aa80d4Sbonwick 	 */
2556088f3894Sahrens 	if (error == EOVERFLOW || error == EBUSY)
2557f0aa80d4Sbonwick 		expected_error = error;
2558f0aa80d4Sbonwick 
2559088f3894Sahrens 	/* XXX workaround 6690467 */
2560088f3894Sahrens 	if (error != expected_error && expected_error != EBUSY) {
2561088f3894Sahrens 		fatal(0, "attach (%s %llu, %s %llu, %d) "
2562088f3894Sahrens 		    "returned %d, expected %d",
2563088f3894Sahrens 		    oldpath, (longlong_t)oldsize, newpath,
2564088f3894Sahrens 		    (longlong_t)newsize, replacing, error, expected_error);
2565fa9e4066Sahrens 	}
2566fa9e4066Sahrens 
2567b24ab676SJeff Bonwick 	VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
2568fa9e4066Sahrens }
2569fa9e4066Sahrens 
2570fa9e4066Sahrens /*
2571573ca77eSGeorge Wilson  * Callback function which expands the physical size of the vdev.
2572573ca77eSGeorge Wilson  */
2573573ca77eSGeorge Wilson vdev_t *
2574573ca77eSGeorge Wilson grow_vdev(vdev_t *vd, void *arg)
2575573ca77eSGeorge Wilson {
2576573ca77eSGeorge Wilson 	spa_t *spa = vd->vdev_spa;
2577573ca77eSGeorge Wilson 	size_t *newsize = arg;
2578573ca77eSGeorge Wilson 	size_t fsize;
2579573ca77eSGeorge Wilson 	int fd;
2580573ca77eSGeorge Wilson 
2581573ca77eSGeorge Wilson 	ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
2582573ca77eSGeorge Wilson 	ASSERT(vd->vdev_ops->vdev_op_leaf);
2583573ca77eSGeorge Wilson 
2584573ca77eSGeorge Wilson 	if ((fd = open(vd->vdev_path, O_RDWR)) == -1)
2585573ca77eSGeorge Wilson 		return (vd);
2586573ca77eSGeorge Wilson 
2587573ca77eSGeorge Wilson 	fsize = lseek(fd, 0, SEEK_END);
2588573ca77eSGeorge Wilson 	(void) ftruncate(fd, *newsize);
2589573ca77eSGeorge Wilson 
2590573ca77eSGeorge Wilson 	if (zopt_verbose >= 6) {
2591573ca77eSGeorge Wilson 		(void) printf("%s grew from %lu to %lu bytes\n",
2592573ca77eSGeorge Wilson 		    vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize);
2593573ca77eSGeorge Wilson 	}
2594573ca77eSGeorge Wilson 	(void) close(fd);
2595573ca77eSGeorge Wilson 	return (NULL);
2596573ca77eSGeorge Wilson }
2597573ca77eSGeorge Wilson 
2598573ca77eSGeorge Wilson /*
2599573ca77eSGeorge Wilson  * Callback function which expands a given vdev by calling vdev_online().
2600573ca77eSGeorge Wilson  */
2601573ca77eSGeorge Wilson /* ARGSUSED */
2602573ca77eSGeorge Wilson vdev_t *
2603573ca77eSGeorge Wilson online_vdev(vdev_t *vd, void *arg)
2604573ca77eSGeorge Wilson {
2605573ca77eSGeorge Wilson 	spa_t *spa = vd->vdev_spa;
2606573ca77eSGeorge Wilson 	vdev_t *tvd = vd->vdev_top;
2607573ca77eSGeorge Wilson 	uint64_t guid = vd->vdev_guid;
26088f18d1faSGeorge Wilson 	uint64_t generation = spa->spa_config_generation + 1;
2609095bcd66SGeorge Wilson 	vdev_state_t newstate = VDEV_STATE_UNKNOWN;
2610095bcd66SGeorge Wilson 	int error;
2611573ca77eSGeorge Wilson 
2612573ca77eSGeorge Wilson 	ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
2613573ca77eSGeorge Wilson 	ASSERT(vd->vdev_ops->vdev_op_leaf);
2614573ca77eSGeorge Wilson 
2615573ca77eSGeorge Wilson 	/* Calling vdev_online will initialize the new metaslabs */
2616573ca77eSGeorge Wilson 	spa_config_exit(spa, SCL_STATE, spa);
2617095bcd66SGeorge Wilson 	error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate);
2618573ca77eSGeorge Wilson 	spa_config_enter(spa, SCL_STATE, spa, RW_READER);
2619573ca77eSGeorge Wilson 
2620573ca77eSGeorge Wilson 	/*
2621095bcd66SGeorge Wilson 	 * If vdev_online returned an error or the underlying vdev_open
2622095bcd66SGeorge Wilson 	 * failed then we abort the expand. The only way to know that
2623095bcd66SGeorge Wilson 	 * vdev_open fails is by checking the returned newstate.
2624095bcd66SGeorge Wilson 	 */
2625095bcd66SGeorge Wilson 	if (error || newstate != VDEV_STATE_HEALTHY) {
2626095bcd66SGeorge Wilson 		if (zopt_verbose >= 5) {
2627095bcd66SGeorge Wilson 			(void) printf("Unable to expand vdev, state %llu, "
2628095bcd66SGeorge Wilson 			    "error %d\n", (u_longlong_t)newstate, error);
2629095bcd66SGeorge Wilson 		}
2630095bcd66SGeorge Wilson 		return (vd);
2631095bcd66SGeorge Wilson 	}
2632095bcd66SGeorge Wilson 	ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY);
2633095bcd66SGeorge Wilson 
2634095bcd66SGeorge Wilson 	/*
2635573ca77eSGeorge Wilson 	 * Since we dropped the lock we need to ensure that we're
2636573ca77eSGeorge Wilson 	 * still talking to the original vdev. It's possible this
2637573ca77eSGeorge Wilson 	 * vdev may have been detached/replaced while we were
2638573ca77eSGeorge Wilson 	 * trying to online it.
2639573ca77eSGeorge Wilson 	 */
26408f18d1faSGeorge Wilson 	if (generation != spa->spa_config_generation) {
26418f18d1faSGeorge Wilson 		if (zopt_verbose >= 5) {
26428f18d1faSGeorge Wilson 			(void) printf("vdev configuration has changed, "
26438f18d1faSGeorge Wilson 			    "guid %llu, state %llu, expected gen %llu, "
2644b24ab676SJeff Bonwick 			    "got gen %llu\n",
2645b24ab676SJeff Bonwick 			    (u_longlong_t)guid,
26468f18d1faSGeorge Wilson 			    (u_longlong_t)tvd->vdev_state,
26478f18d1faSGeorge Wilson 			    (u_longlong_t)generation,
26488f18d1faSGeorge Wilson 			    (u_longlong_t)spa->spa_config_generation);
2649573ca77eSGeorge Wilson 		}
2650573ca77eSGeorge Wilson 		return (vd);
2651573ca77eSGeorge Wilson 	}
2652573ca77eSGeorge Wilson 	return (NULL);
2653573ca77eSGeorge Wilson }
2654573ca77eSGeorge Wilson 
2655573ca77eSGeorge Wilson /*
2656573ca77eSGeorge Wilson  * Traverse the vdev tree calling the supplied function.
2657573ca77eSGeorge Wilson  * We continue to walk the tree until we either have walked all
2658573ca77eSGeorge Wilson  * children or we receive a non-NULL return from the callback.
2659573ca77eSGeorge Wilson  * If a NULL callback is passed, then we just return back the first
2660573ca77eSGeorge Wilson  * leaf vdev we encounter.
2661573ca77eSGeorge Wilson  */
2662573ca77eSGeorge Wilson vdev_t *
2663573ca77eSGeorge Wilson vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg)
2664573ca77eSGeorge Wilson {
2665573ca77eSGeorge Wilson 	if (vd->vdev_ops->vdev_op_leaf) {
2666573ca77eSGeorge Wilson 		if (func == NULL)
2667573ca77eSGeorge Wilson 			return (vd);
2668573ca77eSGeorge Wilson 		else
2669573ca77eSGeorge Wilson 			return (func(vd, arg));
2670573ca77eSGeorge Wilson 	}
2671573ca77eSGeorge Wilson 
2672573ca77eSGeorge Wilson 	for (uint_t c = 0; c < vd->vdev_children; c++) {
2673573ca77eSGeorge Wilson 		vdev_t *cvd = vd->vdev_child[c];
2674573ca77eSGeorge Wilson 		if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL)
2675573ca77eSGeorge Wilson 			return (cvd);
2676573ca77eSGeorge Wilson 	}
2677573ca77eSGeorge Wilson 	return (NULL);
2678573ca77eSGeorge Wilson }
2679573ca77eSGeorge Wilson 
2680573ca77eSGeorge Wilson /*
2681fa9e4066Sahrens  * Verify that dynamic LUN growth works as expected.
2682fa9e4066Sahrens  */
2683b24ab676SJeff Bonwick /* ARGSUSED */
2684fa9e4066Sahrens void
2685b24ab676SJeff Bonwick ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
2686fa9e4066Sahrens {
2687b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
2688b24ab676SJeff Bonwick 	spa_t *spa = zs->zs_spa;
2689b24ab676SJeff Bonwick 	vdev_t *vd, *tvd;
2690b24ab676SJeff Bonwick 	metaslab_class_t *mc;
2691b24ab676SJeff Bonwick 	metaslab_group_t *mg;
2692573ca77eSGeorge Wilson 	size_t psize, newsize;
2693b24ab676SJeff Bonwick 	uint64_t top;
2694b24ab676SJeff Bonwick 	uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count;
2695fa9e4066Sahrens 
2696b24ab676SJeff Bonwick 	VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0);
2697573ca77eSGeorge Wilson 	spa_config_enter(spa, SCL_STATE, spa, RW_READER);
2698573ca77eSGeorge Wilson 
2699b24ab676SJeff Bonwick 	top = ztest_random_vdev_top(spa, B_TRUE);
2700573ca77eSGeorge Wilson 
2701b24ab676SJeff Bonwick 	tvd = spa->spa_root_vdev->vdev_child[top];
2702b24ab676SJeff Bonwick 	mg = tvd->vdev_mg;
2703b24ab676SJeff Bonwick 	mc = mg->mg_class;
2704b24ab676SJeff Bonwick 	old_ms_count = tvd->vdev_ms_count;
2705b24ab676SJeff Bonwick 	old_class_space = metaslab_class_get_space(mc);
2706fa9e4066Sahrens 
2707fa9e4066Sahrens 	/*
2708573ca77eSGeorge Wilson 	 * Determine the size of the first leaf vdev associated with
2709573ca77eSGeorge Wilson 	 * our top-level device.
2710fa9e4066Sahrens 	 */
2711573ca77eSGeorge Wilson 	vd = vdev_walk_tree(tvd, NULL, NULL);
2712573ca77eSGeorge Wilson 	ASSERT3P(vd, !=, NULL);
2713573ca77eSGeorge Wilson 	ASSERT(vd->vdev_ops->vdev_op_leaf);
2714fa9e4066Sahrens 
2715573ca77eSGeorge Wilson 	psize = vd->vdev_psize;
2716fa9e4066Sahrens 
2717fa9e4066Sahrens 	/*
27188f18d1faSGeorge Wilson 	 * We only try to expand the vdev if it's healthy, less than 4x its
27198f18d1faSGeorge Wilson 	 * original size, and it has a valid psize.
2720fa9e4066Sahrens 	 */
27218f18d1faSGeorge Wilson 	if (tvd->vdev_state != VDEV_STATE_HEALTHY ||
27228f18d1faSGeorge Wilson 	    psize == 0 || psize >= 4 * zopt_vdev_size) {
2723573ca77eSGeorge Wilson 		spa_config_exit(spa, SCL_STATE, spa);
2724b24ab676SJeff Bonwick 		VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
2725573ca77eSGeorge Wilson 		return;
2726573ca77eSGeorge Wilson 	}
2727573ca77eSGeorge Wilson 	ASSERT(psize > 0);
2728573ca77eSGeorge Wilson 	newsize = psize + psize / 8;
2729573ca77eSGeorge Wilson 	ASSERT3U(newsize, >, psize);
2730573ca77eSGeorge Wilson 
2731b24ab676SJeff Bonwick 	if (zopt_verbose >= 6) {
2732b24ab676SJeff Bonwick 		(void) printf("Expanding LUN %s from %lu to %lu\n",
2733573ca77eSGeorge Wilson 		    vd->vdev_path, (ulong_t)psize, (ulong_t)newsize);
2734fa9e4066Sahrens 	}
2735fa9e4066Sahrens 
2736573ca77eSGeorge Wilson 	/*
2737573ca77eSGeorge Wilson 	 * Growing the vdev is a two step process:
2738573ca77eSGeorge Wilson 	 *	1). expand the physical size (i.e. relabel)
2739573ca77eSGeorge Wilson 	 *	2). online the vdev to create the new metaslabs
2740573ca77eSGeorge Wilson 	 */
2741573ca77eSGeorge Wilson 	if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL ||
2742573ca77eSGeorge Wilson 	    vdev_walk_tree(tvd, online_vdev, NULL) != NULL ||
2743573ca77eSGeorge Wilson 	    tvd->vdev_state != VDEV_STATE_HEALTHY) {
2744573ca77eSGeorge Wilson 		if (zopt_verbose >= 5) {
2745573ca77eSGeorge Wilson 			(void) printf("Could not expand LUN because "
27468f18d1faSGeorge Wilson 			    "the vdev configuration changed.\n");
2747573ca77eSGeorge Wilson 		}
2748b24ab676SJeff Bonwick 		spa_config_exit(spa, SCL_STATE, spa);
2749b24ab676SJeff Bonwick 		VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
2750573ca77eSGeorge Wilson 		return;
2751573ca77eSGeorge Wilson 	}
2752573ca77eSGeorge Wilson 
2753b24ab676SJeff Bonwick 	spa_config_exit(spa, SCL_STATE, spa);
2754573ca77eSGeorge Wilson 
2755573ca77eSGeorge Wilson 	/*
2756573ca77eSGeorge Wilson 	 * Expanding the LUN will update the config asynchronously,
2757573ca77eSGeorge Wilson 	 * thus we must wait for the async thread to complete any
2758573ca77eSGeorge Wilson 	 * pending tasks before proceeding.
2759573ca77eSGeorge Wilson 	 */
2760b24ab676SJeff Bonwick 	for (;;) {
2761b24ab676SJeff Bonwick 		boolean_t done;
2762573ca77eSGeorge Wilson 		mutex_enter(&spa->spa_async_lock);
2763b24ab676SJeff Bonwick 		done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks);
2764573ca77eSGeorge Wilson 		mutex_exit(&spa->spa_async_lock);
2765b24ab676SJeff Bonwick 		if (done)
2766b24ab676SJeff Bonwick 			break;
2767b24ab676SJeff Bonwick 		txg_wait_synced(spa_get_dsl(spa), 0);
2768b24ab676SJeff Bonwick 		(void) poll(NULL, 0, 100);
2769b24ab676SJeff Bonwick 	}
2770573ca77eSGeorge Wilson 
2771573ca77eSGeorge Wilson 	spa_config_enter(spa, SCL_STATE, spa, RW_READER);
2772b24ab676SJeff Bonwick 
2773b24ab676SJeff Bonwick 	tvd = spa->spa_root_vdev->vdev_child[top];
2774b24ab676SJeff Bonwick 	new_ms_count = tvd->vdev_ms_count;
2775b24ab676SJeff Bonwick 	new_class_space = metaslab_class_get_space(mc);
2776b24ab676SJeff Bonwick 
2777b24ab676SJeff Bonwick 	if (tvd->vdev_mg != mg || mg->mg_class != mc) {
2778b24ab676SJeff Bonwick 		if (zopt_verbose >= 5) {
2779b24ab676SJeff Bonwick 			(void) printf("Could not verify LUN expansion due to "
2780b24ab676SJeff Bonwick 			    "intervening vdev offline or remove.\n");
2781b24ab676SJeff Bonwick 		}
2782b24ab676SJeff Bonwick 		spa_config_exit(spa, SCL_STATE, spa);
2783b24ab676SJeff Bonwick 		VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
2784b24ab676SJeff Bonwick 		return;
2785b24ab676SJeff Bonwick 	}
2786b24ab676SJeff Bonwick 
2787b24ab676SJeff Bonwick 	/*
2788b24ab676SJeff Bonwick 	 * Make sure we were able to grow the vdev.
2789b24ab676SJeff Bonwick 	 */
2790b24ab676SJeff Bonwick 	if (new_ms_count <= old_ms_count)
2791b24ab676SJeff Bonwick 		fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n",
2792b24ab676SJeff Bonwick 		    old_ms_count, new_ms_count);
2793573ca77eSGeorge Wilson 
2794573ca77eSGeorge Wilson 	/*
2795573ca77eSGeorge Wilson 	 * Make sure we were able to grow the pool.
2796573ca77eSGeorge Wilson 	 */
2797b24ab676SJeff Bonwick 	if (new_class_space <= old_class_space)
2798b24ab676SJeff Bonwick 		fatal(0, "LUN expansion failed: class_space %llu <= %llu\n",
2799b24ab676SJeff Bonwick 		    old_class_space, new_class_space);
2800b24ab676SJeff Bonwick 
2801b24ab676SJeff Bonwick 	if (zopt_verbose >= 5) {
2802573ca77eSGeorge Wilson 		char oldnumbuf[6], newnumbuf[6];
2803573ca77eSGeorge Wilson 
2804b24ab676SJeff Bonwick 		nicenum(old_class_space, oldnumbuf);
2805b24ab676SJeff Bonwick 		nicenum(new_class_space, newnumbuf);
2806573ca77eSGeorge Wilson 		(void) printf("%s grew from %s to %s\n",
2807573ca77eSGeorge Wilson 		    spa->spa_name, oldnumbuf, newnumbuf);
2808573ca77eSGeorge Wilson 	}
2809b24ab676SJeff Bonwick 
2810573ca77eSGeorge Wilson 	spa_config_exit(spa, SCL_STATE, spa);
2811b24ab676SJeff Bonwick 	VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
2812b24ab676SJeff Bonwick }
2813b24ab676SJeff Bonwick 
2814b24ab676SJeff Bonwick /*
2815b24ab676SJeff Bonwick  * Verify that dmu_objset_{create,destroy,open,close} work as expected.
2816b24ab676SJeff Bonwick  */
2817b24ab676SJeff Bonwick /* ARGSUSED */
2818b24ab676SJeff Bonwick static void
2819b24ab676SJeff Bonwick ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
2820b24ab676SJeff Bonwick {
2821b24ab676SJeff Bonwick 	/*
2822b24ab676SJeff Bonwick 	 * Create the objects common to all ztest datasets.
2823b24ab676SJeff Bonwick 	 */
2824b24ab676SJeff Bonwick 	VERIFY(zap_create_claim(os, ZTEST_DIROBJ,
2825b24ab676SJeff Bonwick 	    DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0);
2826fa9e4066Sahrens }
2827fa9e4066Sahrens 
282855da60b9SMark J Musante static int
282955da60b9SMark J Musante ztest_dataset_create(char *dsname)
283055da60b9SMark J Musante {
283155da60b9SMark J Musante 	uint64_t zilset = ztest_random(100);
283255da60b9SMark J Musante 	int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0,
283355da60b9SMark J Musante 	    ztest_objset_create_cb, NULL);
283455da60b9SMark J Musante 
283555da60b9SMark J Musante 	if (err || zilset < 80)
283655da60b9SMark J Musante 		return (err);
283755da60b9SMark J Musante 
283855da60b9SMark J Musante 	(void) printf("Setting dataset %s to sync always\n", dsname);
283955da60b9SMark J Musante 	return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC,
284055da60b9SMark J Musante 	    ZFS_SYNC_ALWAYS, B_FALSE));
284155da60b9SMark J Musante }
284255da60b9SMark J Musante 
2843fa9e4066Sahrens /* ARGSUSED */
28441d452cf5Sahrens static int
2845fd136879SMatthew Ahrens ztest_objset_destroy_cb(const char *name, void *arg)
2846fa9e4066Sahrens {
2847fa9e4066Sahrens 	objset_t *os;
2848b24ab676SJeff Bonwick 	dmu_object_info_t doi;
2849fa9e4066Sahrens 	int error;
2850fa9e4066Sahrens 
2851fa9e4066Sahrens 	/*
2852fa9e4066Sahrens 	 * Verify that the dataset contains a directory object.
2853fa9e4066Sahrens 	 */
2854b24ab676SJeff Bonwick 	VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os));
2855b24ab676SJeff Bonwick 	error = dmu_object_info(os, ZTEST_DIROBJ, &doi);
2856e1930233Sbonwick 	if (error != ENOENT) {
2857e1930233Sbonwick 		/* We could have crashed in the middle of destroying it */
2858fa9e4066Sahrens 		ASSERT3U(error, ==, 0);
2859b24ab676SJeff Bonwick 		ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER);
2860b24ab676SJeff Bonwick 		ASSERT3S(doi.doi_physical_blocks_512, >=, 0);
2861e1930233Sbonwick 	}
2862503ad85cSMatthew Ahrens 	dmu_objset_rele(os, FTAG);
2863fa9e4066Sahrens 
2864fa9e4066Sahrens 	/*
2865fa9e4066Sahrens 	 * Destroy the dataset.
2866fa9e4066Sahrens 	 */
2867b24ab676SJeff Bonwick 	VERIFY3U(0, ==, dmu_objset_destroy(name, B_FALSE));
28681d452cf5Sahrens 	return (0);
2869fa9e4066Sahrens }
2870fa9e4066Sahrens 
2871b24ab676SJeff Bonwick static boolean_t
2872b24ab676SJeff Bonwick ztest_snapshot_create(char *osname, uint64_t id)
2873fa9e4066Sahrens {
2874b24ab676SJeff Bonwick 	char snapname[MAXNAMELEN];
2875b24ab676SJeff Bonwick 	int error;
2876fa9e4066Sahrens 
2877b24ab676SJeff Bonwick 	(void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname,
2878b24ab676SJeff Bonwick 	    (u_longlong_t)id);
2879fa9e4066Sahrens 
2880b24ab676SJeff Bonwick 	error = dmu_objset_snapshot(osname, strchr(snapname, '@') + 1,
2881b24ab676SJeff Bonwick 	    NULL, B_FALSE);
2882b24ab676SJeff Bonwick 	if (error == ENOSPC) {
2883b24ab676SJeff Bonwick 		ztest_record_enospc(FTAG);
2884b24ab676SJeff Bonwick 		return (B_FALSE);
2885b24ab676SJeff Bonwick 	}
2886b24ab676SJeff Bonwick 	if (error != 0 && error != EEXIST)
2887b24ab676SJeff Bonwick 		fatal(0, "ztest_snapshot_create(%s) = %d", snapname, error);
2888b24ab676SJeff Bonwick 	return (B_TRUE);
2889fa9e4066Sahrens }
2890fa9e4066Sahrens 
2891b24ab676SJeff Bonwick static boolean_t
2892b24ab676SJeff Bonwick ztest_snapshot_destroy(char *osname, uint64_t id)
2893fa9e4066Sahrens {
2894b24ab676SJeff Bonwick 	char snapname[MAXNAMELEN];
2895b24ab676SJeff Bonwick 	int error;
2896b24ab676SJeff Bonwick 
2897b24ab676SJeff Bonwick 	(void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname,
2898b24ab676SJeff Bonwick 	    (u_longlong_t)id);
2899b24ab676SJeff Bonwick 
2900b24ab676SJeff Bonwick 	error = dmu_objset_destroy(snapname, B_FALSE);
2901b24ab676SJeff Bonwick 	if (error != 0 && error != ENOENT)
2902b24ab676SJeff Bonwick 		fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error);
2903b24ab676SJeff Bonwick 	return (B_TRUE);
2904b24ab676SJeff Bonwick }
2905b24ab676SJeff Bonwick 
2906b24ab676SJeff Bonwick /* ARGSUSED */
2907b24ab676SJeff Bonwick void
2908b24ab676SJeff Bonwick ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
2909b24ab676SJeff Bonwick {
2910b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
2911b24ab676SJeff Bonwick 	ztest_ds_t zdtmp;
2912b24ab676SJeff Bonwick 	int iters;
2913fa9e4066Sahrens 	int error;
2914745cd3c5Smaybee 	objset_t *os, *os2;
2915b24ab676SJeff Bonwick 	char name[MAXNAMELEN];
2916fa9e4066Sahrens 	zilog_t *zilog;
2917fa9e4066Sahrens 
2918b24ab676SJeff Bonwick 	(void) rw_rdlock(&zs->zs_name_lock);
2919b24ab676SJeff Bonwick 
2920b24ab676SJeff Bonwick 	(void) snprintf(name, MAXNAMELEN, "%s/temp_%llu",
2921b24ab676SJeff Bonwick 	    zs->zs_pool, (u_longlong_t)id);
2922fa9e4066Sahrens 
2923fa9e4066Sahrens 	/*
2924fa9e4066Sahrens 	 * If this dataset exists from a previous run, process its replay log
2925fa9e4066Sahrens 	 * half of the time.  If we don't replay it, then dmu_objset_destroy()
2926b24ab676SJeff Bonwick 	 * (invoked from ztest_objset_destroy_cb()) should just throw it away.
2927fa9e4066Sahrens 	 */
2928fa9e4066Sahrens 	if (ztest_random(2) == 0 &&
2929503ad85cSMatthew Ahrens 	    dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) {
2930b24ab676SJeff Bonwick 		ztest_zd_init(&zdtmp, os);
2931b24ab676SJeff Bonwick 		zil_replay(os, &zdtmp, ztest_replay_vector);
2932b24ab676SJeff Bonwick 		ztest_zd_fini(&zdtmp);
2933503ad85cSMatthew Ahrens 		dmu_objset_disown(os, FTAG);
2934fa9e4066Sahrens 	}
2935fa9e4066Sahrens 
2936fa9e4066Sahrens 	/*
2937fa9e4066Sahrens 	 * There may be an old instance of the dataset we're about to
2938fa9e4066Sahrens 	 * create lying around from a previous run.  If so, destroy it
2939fa9e4066Sahrens 	 * and all of its snapshots.
2940fa9e4066Sahrens 	 */
2941b24ab676SJeff Bonwick 	(void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
29420b69c2f0Sahrens 	    DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
2943fa9e4066Sahrens 
2944fa9e4066Sahrens 	/*
2945fa9e4066Sahrens 	 * Verify that the destroyed dataset is no longer in the namespace.
2946fa9e4066Sahrens 	 */
2947b24ab676SJeff Bonwick 	VERIFY3U(ENOENT, ==, dmu_objset_hold(name, FTAG, &os));
2948fa9e4066Sahrens 
2949fa9e4066Sahrens 	/*
2950fa9e4066Sahrens 	 * Verify that we can create a new dataset.
2951fa9e4066Sahrens 	 */
295255da60b9SMark J Musante 	error = ztest_dataset_create(name);
2953fa9e4066Sahrens 	if (error) {
2954fa9e4066Sahrens 		if (error == ENOSPC) {
2955b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
2956b24ab676SJeff Bonwick 			(void) rw_unlock(&zs->zs_name_lock);
2957fa9e4066Sahrens 			return;
2958fa9e4066Sahrens 		}
2959fa9e4066Sahrens 		fatal(0, "dmu_objset_create(%s) = %d", name, error);
2960fa9e4066Sahrens 	}
2961fa9e4066Sahrens 
2962b24ab676SJeff Bonwick 	VERIFY3U(0, ==,
2963b24ab676SJeff Bonwick 	    dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os));
2964b24ab676SJeff Bonwick 
2965b24ab676SJeff Bonwick 	ztest_zd_init(&zdtmp, os);
2966fa9e4066Sahrens 
2967fa9e4066Sahrens 	/*
2968fa9e4066Sahrens 	 * Open the intent log for it.
2969fa9e4066Sahrens 	 */
2970b24ab676SJeff Bonwick 	zilog = zil_open(os, ztest_get_data);
2971fa9e4066Sahrens 
2972fa9e4066Sahrens 	/*
2973b24ab676SJeff Bonwick 	 * Put some objects in there, do a little I/O to them,
2974b24ab676SJeff Bonwick 	 * and randomly take a couple of snapshots along the way.
2975fa9e4066Sahrens 	 */
2976b24ab676SJeff Bonwick 	iters = ztest_random(5);
2977b24ab676SJeff Bonwick 	for (int i = 0; i < iters; i++) {
2978b24ab676SJeff Bonwick 		ztest_dmu_object_alloc_free(&zdtmp, id);
2979b24ab676SJeff Bonwick 		if (ztest_random(iters) == 0)
2980b24ab676SJeff Bonwick 			(void) ztest_snapshot_create(name, i);
2981fa9e4066Sahrens 	}
2982fa9e4066Sahrens 
2983fa9e4066Sahrens 	/*
2984fa9e4066Sahrens 	 * Verify that we cannot create an existing dataset.
2985fa9e4066Sahrens 	 */
2986b24ab676SJeff Bonwick 	VERIFY3U(EEXIST, ==,
2987b24ab676SJeff Bonwick 	    dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL));
2988fa9e4066Sahrens 
2989fa9e4066Sahrens 	/*
2990503ad85cSMatthew Ahrens 	 * Verify that we can hold an objset that is also owned.
2991fa9e4066Sahrens 	 */
2992b24ab676SJeff Bonwick 	VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2));
2993503ad85cSMatthew Ahrens 	dmu_objset_rele(os2, FTAG);
2994503ad85cSMatthew Ahrens 
2995503ad85cSMatthew Ahrens 	/*
2996503ad85cSMatthew Ahrens 	 * Verify that we cannot own an objset that is already owned.
2997503ad85cSMatthew Ahrens 	 */
2998b24ab676SJeff Bonwick 	VERIFY3U(EBUSY, ==,
2999b24ab676SJeff Bonwick 	    dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2));
3000fa9e4066Sahrens 
3001fa9e4066Sahrens 	zil_close(zilog);
3002503ad85cSMatthew Ahrens 	dmu_objset_disown(os, FTAG);
3003b24ab676SJeff Bonwick 	ztest_zd_fini(&zdtmp);
3004fa9e4066Sahrens 
3005b24ab676SJeff Bonwick 	(void) rw_unlock(&zs->zs_name_lock);
3006fa9e4066Sahrens }
3007fa9e4066Sahrens 
3008fa9e4066Sahrens /*
3009fa9e4066Sahrens  * Verify that dmu_snapshot_{create,destroy,open,close} work as expected.
3010fa9e4066Sahrens  */
3011fa9e4066Sahrens void
3012b24ab676SJeff Bonwick ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
3013fa9e4066Sahrens {
3014b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
3015fa9e4066Sahrens 
3016b24ab676SJeff Bonwick 	(void) rw_rdlock(&zs->zs_name_lock);
3017b24ab676SJeff Bonwick 	(void) ztest_snapshot_destroy(zd->zd_name, id);
3018b24ab676SJeff Bonwick 	(void) ztest_snapshot_create(zd->zd_name, id);
3019b24ab676SJeff Bonwick 	(void) rw_unlock(&zs->zs_name_lock);
3020fa9e4066Sahrens }
3021fa9e4066Sahrens 
3022fa9e4066Sahrens /*
3023718d718aSGeorge Wilson  * Cleanup non-standard snapshots and clones.
3024718d718aSGeorge Wilson  */
3025718d718aSGeorge Wilson void
3026b24ab676SJeff Bonwick ztest_dsl_dataset_cleanup(char *osname, uint64_t id)
3027718d718aSGeorge Wilson {
3028b24ab676SJeff Bonwick 	char snap1name[MAXNAMELEN];
3029b24ab676SJeff Bonwick 	char clone1name[MAXNAMELEN];
3030b24ab676SJeff Bonwick 	char snap2name[MAXNAMELEN];
3031b24ab676SJeff Bonwick 	char clone2name[MAXNAMELEN];
3032b24ab676SJeff Bonwick 	char snap3name[MAXNAMELEN];
3033718d718aSGeorge Wilson 	int error;
3034718d718aSGeorge Wilson 
3035b24ab676SJeff Bonwick 	(void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id);
3036b24ab676SJeff Bonwick 	(void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id);
3037b24ab676SJeff Bonwick 	(void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id);
3038b24ab676SJeff Bonwick 	(void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
3039b24ab676SJeff Bonwick 	(void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
3040718d718aSGeorge Wilson 
3041842727c2SChris Kirby 	error = dmu_objset_destroy(clone2name, B_FALSE);
3042718d718aSGeorge Wilson 	if (error && error != ENOENT)
3043718d718aSGeorge Wilson 		fatal(0, "dmu_objset_destroy(%s) = %d", clone2name, error);
3044842727c2SChris Kirby 	error = dmu_objset_destroy(snap3name, B_FALSE);
3045718d718aSGeorge Wilson 	if (error && error != ENOENT)
3046718d718aSGeorge Wilson 		fatal(0, "dmu_objset_destroy(%s) = %d", snap3name, error);
3047842727c2SChris Kirby 	error = dmu_objset_destroy(snap2name, B_FALSE);
3048718d718aSGeorge Wilson 	if (error && error != ENOENT)
3049718d718aSGeorge Wilson 		fatal(0, "dmu_objset_destroy(%s) = %d", snap2name, error);
3050842727c2SChris Kirby 	error = dmu_objset_destroy(clone1name, B_FALSE);
3051718d718aSGeorge Wilson 	if (error && error != ENOENT)
3052718d718aSGeorge Wilson 		fatal(0, "dmu_objset_destroy(%s) = %d", clone1name, error);
3053842727c2SChris Kirby 	error = dmu_objset_destroy(snap1name, B_FALSE);
3054718d718aSGeorge Wilson 	if (error && error != ENOENT)
3055718d718aSGeorge Wilson 		fatal(0, "dmu_objset_destroy(%s) = %d", snap1name, error);
3056718d718aSGeorge Wilson }
3057718d718aSGeorge Wilson 
3058718d718aSGeorge Wilson /*
30594f5064b7SMark J Musante  * Verify dsl_dataset_promote handles EBUSY
30604f5064b7SMark J Musante  */
30614f5064b7SMark J Musante void
3062b24ab676SJeff Bonwick ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
30634f5064b7SMark J Musante {
3064b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
30654f5064b7SMark J Musante 	objset_t *clone;
30664f5064b7SMark J Musante 	dsl_dataset_t *ds;
3067b24ab676SJeff Bonwick 	char snap1name[MAXNAMELEN];
3068b24ab676SJeff Bonwick 	char clone1name[MAXNAMELEN];
3069b24ab676SJeff Bonwick 	char snap2name[MAXNAMELEN];
3070b24ab676SJeff Bonwick 	char clone2name[MAXNAMELEN];
3071b24ab676SJeff Bonwick 	char snap3name[MAXNAMELEN];
3072b24ab676SJeff Bonwick 	char *osname = zd->zd_name;
3073b24ab676SJeff Bonwick 	int error;
30744f5064b7SMark J Musante 
3075b24ab676SJeff Bonwick 	(void) rw_rdlock(&zs->zs_name_lock);
30764f5064b7SMark J Musante 
3077b24ab676SJeff Bonwick 	ztest_dsl_dataset_cleanup(osname, id);
3078718d718aSGeorge Wilson 
3079b24ab676SJeff Bonwick 	(void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id);
3080b24ab676SJeff Bonwick 	(void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id);
3081b24ab676SJeff Bonwick 	(void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id);
3082b24ab676SJeff Bonwick 	(void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
3083b24ab676SJeff Bonwick 	(void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
308405312e2cSMark J Musante 
3085ea2f5b9eSMatthew Ahrens 	error = dmu_objset_snapshot(osname, strchr(snap1name, '@')+1,
3086b24ab676SJeff Bonwick 	    NULL, B_FALSE);
3087b2d22b66SGeorge Wilson 	if (error && error != EEXIST) {
3088b2d22b66SGeorge Wilson 		if (error == ENOSPC) {
3089b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3090b2d22b66SGeorge Wilson 			goto out;
3091b2d22b66SGeorge Wilson 		}
3092b2d22b66SGeorge Wilson 		fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error);
3093b2d22b66SGeorge Wilson 	}
30944f5064b7SMark J Musante 
3095503ad85cSMatthew Ahrens 	error = dmu_objset_hold(snap1name, FTAG, &clone);
30964f5064b7SMark J Musante 	if (error)
30974f5064b7SMark J Musante 		fatal(0, "dmu_open_snapshot(%s) = %d", snap1name, error);
30984f5064b7SMark J Musante 
3099ae46e4c7SMatthew Ahrens 	error = dmu_objset_clone(clone1name, dmu_objset_ds(clone), 0);
3100503ad85cSMatthew Ahrens 	dmu_objset_rele(clone, FTAG);
3101b2d22b66SGeorge Wilson 	if (error) {
3102b2d22b66SGeorge Wilson 		if (error == ENOSPC) {
3103b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3104b2d22b66SGeorge Wilson 			goto out;
3105b2d22b66SGeorge Wilson 		}
3106b2d22b66SGeorge Wilson 		fatal(0, "dmu_objset_create(%s) = %d", clone1name, error);
3107b2d22b66SGeorge Wilson 	}
31084f5064b7SMark J Musante 
31094f5064b7SMark J Musante 	error = dmu_objset_snapshot(clone1name, strchr(snap2name, '@')+1,
3110b24ab676SJeff Bonwick 	    NULL, B_FALSE);
3111b2d22b66SGeorge Wilson 	if (error && error != EEXIST) {
3112b2d22b66SGeorge Wilson 		if (error == ENOSPC) {
3113b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3114b2d22b66SGeorge Wilson 			goto out;
3115b2d22b66SGeorge Wilson 		}
3116b2d22b66SGeorge Wilson 		fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error);
3117b2d22b66SGeorge Wilson 	}
31184f5064b7SMark J Musante 
31194f5064b7SMark J Musante 	error = dmu_objset_snapshot(clone1name, strchr(snap3name, '@')+1,
3120b24ab676SJeff Bonwick 	    NULL, B_FALSE);
3121b2d22b66SGeorge Wilson 	if (error && error != EEXIST) {
3122b2d22b66SGeorge Wilson 		if (error == ENOSPC) {
3123b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3124b2d22b66SGeorge Wilson 			goto out;
3125b2d22b66SGeorge Wilson 		}
3126b2d22b66SGeorge Wilson 		fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error);
3127b2d22b66SGeorge Wilson 	}
31284f5064b7SMark J Musante 
3129503ad85cSMatthew Ahrens 	error = dmu_objset_hold(snap3name, FTAG, &clone);
31304f5064b7SMark J Musante 	if (error)
31314f5064b7SMark J Musante 		fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error);
31324f5064b7SMark J Musante 
3133ae46e4c7SMatthew Ahrens 	error = dmu_objset_clone(clone2name, dmu_objset_ds(clone), 0);
3134503ad85cSMatthew Ahrens 	dmu_objset_rele(clone, FTAG);
3135b2d22b66SGeorge Wilson 	if (error) {
3136b2d22b66SGeorge Wilson 		if (error == ENOSPC) {
3137b24ab676SJeff Bonwick 			ztest_record_enospc(FTAG);
3138b2d22b66SGeorge Wilson 			goto out;
3139b2d22b66SGeorge Wilson 		}
3140b2d22b66SGeorge Wilson 		fatal(0, "dmu_objset_create(%s) = %d", clone2name, error);
3141b2d22b66SGeorge Wilson 	}
31424f5064b7SMark J Musante 
3143cde58dbcSMatthew Ahrens 	error = dsl_dataset_own(snap2name, B_FALSE, FTAG, &ds);
31444f5064b7SMark J Musante 	if (error)
3145cde58dbcSMatthew Ahrens 		fatal(0, "dsl_dataset_own(%s) = %d", snap2name, error);
3146681d9761SEric Taylor 	error = dsl_dataset_promote(clone2name, NULL);
31474f5064b7SMark J Musante 	if (error != EBUSY)
31484f5064b7SMark J Musante 		fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name,
31494f5064b7SMark J Musante 		    error);
31504f5064b7SMark J Musante 	dsl_dataset_disown(ds, FTAG);
31514f5064b7SMark J Musante 
3152b2d22b66SGeorge Wilson out:
3153b24ab676SJeff Bonwick 	ztest_dsl_dataset_cleanup(osname, id);
31544f5064b7SMark J Musante 
3155b24ab676SJeff Bonwick 	(void) rw_unlock(&zs->zs_name_lock);
31564f5064b7SMark J Musante }
31574f5064b7SMark J Musante 
31584f5064b7SMark J Musante /*
3159fa9e4066Sahrens  * Verify that dmu_object_{alloc,free} work as expected.
3160fa9e4066Sahrens  */
3161fa9e4066Sahrens void
3162b24ab676SJeff Bonwick ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id)
3163fa9e4066Sahrens {
3164b24ab676SJeff Bonwick 	ztest_od_t od[4];
3165b24ab676SJeff Bonwick 	int batchsize = sizeof (od) / sizeof (od[0]);
3166fa9e4066Sahrens 
3167b24ab676SJeff Bonwick 	for (int b = 0; b < batchsize; b++)
3168b24ab676SJeff Bonwick 		ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0);
3169fa9e4066Sahrens 
3170fa9e4066Sahrens 	/*
3171b24ab676SJeff Bonwick 	 * Destroy the previous batch of objects, create a new batch,
3172b24ab676SJeff Bonwick 	 * and do some I/O on the new objects.
3173fa9e4066Sahrens 	 */
3174b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0)
3175fa9e4066Sahrens 		return;
3176fa9e4066Sahrens 
3177b24ab676SJeff Bonwick 	while (ztest_random(4 * batchsize) != 0)
3178b24ab676SJeff Bonwick 		ztest_io(zd, od[ztest_random(batchsize)].od_object,
3179b24ab676SJeff Bonwick 		    ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
3180fa9e4066Sahrens }
3181fa9e4066Sahrens 
3182fa9e4066Sahrens /*
3183fa9e4066Sahrens  * Verify that dmu_{read,write} work as expected.
3184fa9e4066Sahrens  */
3185fa9e4066Sahrens void
3186b24ab676SJeff Bonwick ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id)
3187fa9e4066Sahrens {
3188b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
3189b24ab676SJeff Bonwick 	ztest_od_t od[2];
3190fa9e4066Sahrens 	dmu_tx_t *tx;
3191fa9e4066Sahrens 	int i, freeit, error;
3192fa9e4066Sahrens 	uint64_t n, s, txg;
3193fa9e4066Sahrens 	bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT;
3194b24ab676SJeff Bonwick 	uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
3195b24ab676SJeff Bonwick 	uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t);
3196fa9e4066Sahrens 	uint64_t regions = 997;
3197fa9e4066Sahrens 	uint64_t stride = 123456789ULL;
3198fa9e4066Sahrens 	uint64_t width = 40;
3199fa9e4066Sahrens 	int free_percent = 5;
3200fa9e4066Sahrens 
3201fa9e4066Sahrens 	/*
3202fa9e4066Sahrens 	 * This test uses two objects, packobj and bigobj, that are always
3203fa9e4066Sahrens 	 * updated together (i.e. in the same tx) so that their contents are
3204fa9e4066Sahrens 	 * in sync and can be compared.  Their contents relate to each other
3205fa9e4066Sahrens 	 * in a simple way: packobj is a dense array of 'bufwad' structures,
3206fa9e4066Sahrens 	 * while bigobj is a sparse array of the same bufwads.  Specifically,
3207fa9e4066Sahrens 	 * for any index n, there are three bufwads that should be identical:
3208fa9e4066Sahrens 	 *
3209fa9e4066Sahrens 	 *	packobj, at offset n * sizeof (bufwad_t)
3210fa9e4066Sahrens 	 *	bigobj, at the head of the nth chunk
3211fa9e4066Sahrens 	 *	bigobj, at the tail of the nth chunk
3212fa9e4066Sahrens 	 *
3213fa9e4066Sahrens 	 * The chunk size is arbitrary. It doesn't have to be a power of two,
3214fa9e4066Sahrens 	 * and it doesn't have any relation to the object blocksize.
3215fa9e4066Sahrens 	 * The only requirement is that it can hold at least two bufwads.
3216fa9e4066Sahrens 	 *
3217fa9e4066Sahrens 	 * Normally, we write the bufwad to each of these locations.
3218fa9e4066Sahrens 	 * However, free_percent of the time we instead write zeroes to
3219fa9e4066Sahrens 	 * packobj and perform a dmu_free_range() on bigobj.  By comparing
3220fa9e4066Sahrens 	 * bigobj to packobj, we can verify that the DMU is correctly
3221fa9e4066Sahrens 	 * tracking which parts of an object are allocated and free,
3222fa9e4066Sahrens 	 * and that the contents of the allocated blocks are correct.
3223fa9e4066Sahrens 	 */
3224fa9e4066Sahrens 
3225fa9e4066Sahrens 	/*
3226fa9e4066Sahrens 	 * Read the directory info.  If it's the first time, set things up.
3227fa9e4066Sahrens 	 */
3228b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize);
3229b24ab676SJeff Bonwick 	ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize);
3230b24ab676SJeff Bonwick 
3231b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3232fa9e4066Sahrens 		return;
3233fa9e4066Sahrens 
3234b24ab676SJeff Bonwick 	bigobj = od[0].od_object;
3235b24ab676SJeff Bonwick 	packobj = od[1].od_object;
3236b24ab676SJeff Bonwick 	chunksize = od[0].od_gen;
3237b24ab676SJeff Bonwick 	ASSERT(chunksize == od[1].od_gen);
3238fa9e4066Sahrens 
3239fa9e4066Sahrens 	/*
3240fa9e4066Sahrens 	 * Prefetch a random chunk of the big object.
3241fa9e4066Sahrens 	 * Our aim here is to get some async reads in flight
3242fa9e4066Sahrens 	 * for blocks that we may free below; the DMU should
3243fa9e4066Sahrens 	 * handle this race correctly.
3244fa9e4066Sahrens 	 */
3245fa9e4066Sahrens 	n = ztest_random(regions) * stride + ztest_random(width);
3246fa9e4066Sahrens 	s = 1 + ztest_random(2 * width - 1);
3247b24ab676SJeff Bonwick 	dmu_prefetch(os, bigobj, n * chunksize, s * chunksize);
3248fa9e4066Sahrens 
3249fa9e4066Sahrens 	/*
3250fa9e4066Sahrens 	 * Pick a random index and compute the offsets into packobj and bigobj.
3251fa9e4066Sahrens 	 */
3252fa9e4066Sahrens 	n = ztest_random(regions) * stride + ztest_random(width);
3253fa9e4066Sahrens 	s = 1 + ztest_random(width - 1);
3254fa9e4066Sahrens 
3255fa9e4066Sahrens 	packoff = n * sizeof (bufwad_t);
3256fa9e4066Sahrens 	packsize = s * sizeof (bufwad_t);
3257fa9e4066Sahrens 
3258b24ab676SJeff Bonwick 	bigoff = n * chunksize;
3259b24ab676SJeff Bonwick 	bigsize = s * chunksize;
3260fa9e4066Sahrens 
3261fa9e4066Sahrens 	packbuf = umem_alloc(packsize, UMEM_NOFAIL);
3262fa9e4066Sahrens 	bigbuf = umem_alloc(bigsize, UMEM_NOFAIL);
3263fa9e4066Sahrens 
3264fa9e4066Sahrens 	/*
3265fa9e4066Sahrens 	 * free_percent of the time, free a range of bigobj rather than
3266fa9e4066Sahrens 	 * overwriting it.
3267fa9e4066Sahrens 	 */
3268fa9e4066Sahrens 	freeit = (ztest_random(100) < free_percent);
3269fa9e4066Sahrens 
3270fa9e4066Sahrens 	/*
3271fa9e4066Sahrens 	 * Read the current contents of our objects.
3272fa9e4066Sahrens 	 */
3273b24ab676SJeff Bonwick 	error = dmu_read(os, packobj, packoff, packsize, packbuf,
32747bfdf011SNeil Perrin 	    DMU_READ_PREFETCH);
3275ea8dc4b6Seschrock 	ASSERT3U(error, ==, 0);
3276b24ab676SJeff Bonwick 	error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf,
32777bfdf011SNeil Perrin 	    DMU_READ_PREFETCH);
3278ea8dc4b6Seschrock 	ASSERT3U(error, ==, 0);
3279fa9e4066Sahrens 
3280fa9e4066Sahrens 	/*
3281fa9e4066Sahrens 	 * Get a tx for the mods to both packobj and bigobj.
3282fa9e4066Sahrens 	 */
3283fa9e4066Sahrens 	tx = dmu_tx_create(os);
3284fa9e4066Sahrens 
3285b24ab676SJeff Bonwick 	dmu_tx_hold_write(tx, packobj, packoff, packsize);
3286fa9e4066Sahrens 
3287fa9e4066Sahrens 	if (freeit)
3288b24ab676SJeff Bonwick 		dmu_tx_hold_free(tx, bigobj, bigoff, bigsize);
3289fa9e4066Sahrens 	else
3290b24ab676SJeff Bonwick 		dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
3291fa9e4066Sahrens 
3292b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3293b24ab676SJeff Bonwick 	if (txg == 0) {
3294fa9e4066Sahrens 		umem_free(packbuf, packsize);
3295fa9e4066Sahrens 		umem_free(bigbuf, bigsize);
3296fa9e4066Sahrens 		return;
3297fa9e4066Sahrens 	}
3298fa9e4066Sahrens 
3299b24ab676SJeff Bonwick 	dmu_object_set_checksum(os, bigobj,
3300b24ab676SJeff Bonwick 	    (enum zio_checksum)ztest_random_dsl_prop(ZFS_PROP_CHECKSUM), tx);
3301b24ab676SJeff Bonwick 
3302b24ab676SJeff Bonwick 	dmu_object_set_compress(os, bigobj,
3303b24ab676SJeff Bonwick 	    (enum zio_compress)ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), tx);
3304fa9e4066Sahrens 
3305fa9e4066Sahrens 	/*
3306fa9e4066Sahrens 	 * For each index from n to n + s, verify that the existing bufwad
3307fa9e4066Sahrens 	 * in packobj matches the bufwads at the head and tail of the
3308fa9e4066Sahrens 	 * corresponding chunk in bigobj.  Then update all three bufwads
3309fa9e4066Sahrens 	 * with the new values we want to write out.
3310fa9e4066Sahrens 	 */
3311fa9e4066Sahrens 	for (i = 0; i < s; i++) {
3312fa9e4066Sahrens 		/* LINTED */
3313fa9e4066Sahrens 		pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
3314fa9e4066Sahrens 		/* LINTED */
3315b24ab676SJeff Bonwick 		bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
3316fa9e4066Sahrens 		/* LINTED */
3317b24ab676SJeff Bonwick 		bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
3318fa9e4066Sahrens 
3319fa9e4066Sahrens 		ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
3320fa9e4066Sahrens 		ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
3321fa9e4066Sahrens 
3322fa9e4066Sahrens 		if (pack->bw_txg > txg)
3323fa9e4066Sahrens 			fatal(0, "future leak: got %llx, open txg is %llx",
3324fa9e4066Sahrens 			    pack->bw_txg, txg);
3325fa9e4066Sahrens 
3326fa9e4066Sahrens 		if (pack->bw_data != 0 && pack->bw_index != n + i)
3327fa9e4066Sahrens 			fatal(0, "wrong index: got %llx, wanted %llx+%llx",
3328fa9e4066Sahrens 			    pack->bw_index, n, i);
3329fa9e4066Sahrens 
3330fa9e4066Sahrens 		if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
3331fa9e4066Sahrens 			fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
3332fa9e4066Sahrens 
3333fa9e4066Sahrens 		if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
3334fa9e4066Sahrens 			fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
3335fa9e4066Sahrens 
3336fa9e4066Sahrens 		if (freeit) {
3337fa9e4066Sahrens 			bzero(pack, sizeof (bufwad_t));
3338fa9e4066Sahrens 		} else {
3339fa9e4066Sahrens 			pack->bw_index = n + i;
3340fa9e4066Sahrens 			pack->bw_txg = txg;
3341fa9e4066Sahrens 			pack->bw_data = 1 + ztest_random(-2ULL);
3342fa9e4066Sahrens 		}
3343fa9e4066Sahrens 		*bigH = *pack;
3344fa9e4066Sahrens 		*bigT = *pack;
3345fa9e4066Sahrens 	}
3346fa9e4066Sahrens 
3347fa9e4066Sahrens 	/*
3348fa9e4066Sahrens 	 * We've verified all the old bufwads, and made new ones.
3349fa9e4066Sahrens 	 * Now write them out.
3350fa9e4066Sahrens 	 */
3351b24ab676SJeff Bonwick 	dmu_write(os, packobj, packoff, packsize, packbuf, tx);
3352fa9e4066Sahrens 
3353fa9e4066Sahrens 	if (freeit) {
3354b24ab676SJeff Bonwick 		if (zopt_verbose >= 7) {
3355fa9e4066Sahrens 			(void) printf("freeing offset %llx size %llx"
3356fa9e4066Sahrens 			    " txg %llx\n",
3357fa9e4066Sahrens 			    (u_longlong_t)bigoff,
3358fa9e4066Sahrens 			    (u_longlong_t)bigsize,
3359fa9e4066Sahrens 			    (u_longlong_t)txg);
3360fa9e4066Sahrens 		}
3361b24ab676SJeff Bonwick 		VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx));
3362fa9e4066Sahrens 	} else {
3363b24ab676SJeff Bonwick 		if (zopt_verbose >= 7) {
3364fa9e4066Sahrens 			(void) printf("writing offset %llx size %llx"
3365fa9e4066Sahrens 			    " txg %llx\n",
3366fa9e4066Sahrens 			    (u_longlong_t)bigoff,
3367fa9e4066Sahrens 			    (u_longlong_t)bigsize,
3368fa9e4066Sahrens 			    (u_longlong_t)txg);
3369fa9e4066Sahrens 		}
3370b24ab676SJeff Bonwick 		dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx);
3371fa9e4066Sahrens 	}
3372fa9e4066Sahrens 
3373fa9e4066Sahrens 	dmu_tx_commit(tx);
3374fa9e4066Sahrens 
3375fa9e4066Sahrens 	/*
3376fa9e4066Sahrens 	 * Sanity check the stuff we just wrote.
3377fa9e4066Sahrens 	 */
3378fa9e4066Sahrens 	{
3379fa9e4066Sahrens 		void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
3380fa9e4066Sahrens 		void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
3381fa9e4066Sahrens 
3382b24ab676SJeff Bonwick 		VERIFY(0 == dmu_read(os, packobj, packoff,
33837bfdf011SNeil Perrin 		    packsize, packcheck, DMU_READ_PREFETCH));
3384b24ab676SJeff Bonwick 		VERIFY(0 == dmu_read(os, bigobj, bigoff,
33857bfdf011SNeil Perrin 		    bigsize, bigcheck, DMU_READ_PREFETCH));
3386fa9e4066Sahrens 
3387fa9e4066Sahrens 		ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
3388fa9e4066Sahrens 		ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
3389fa9e4066Sahrens 
3390fa9e4066Sahrens 		umem_free(packcheck, packsize);
3391fa9e4066Sahrens 		umem_free(bigcheck, bigsize);
3392fa9e4066Sahrens 	}
3393fa9e4066Sahrens 
3394fa9e4066Sahrens 	umem_free(packbuf, packsize);
3395fa9e4066Sahrens 	umem_free(bigbuf, bigsize);
3396fa9e4066Sahrens }
3397fa9e4066Sahrens 
3398fa9e4066Sahrens void
33992fdbea25SAleksandr Guzovskiy compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf,
3400b24ab676SJeff Bonwick     uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg)
34012fdbea25SAleksandr Guzovskiy {
34022fdbea25SAleksandr Guzovskiy 	uint64_t i;
34032fdbea25SAleksandr Guzovskiy 	bufwad_t *pack;
34042fdbea25SAleksandr Guzovskiy 	bufwad_t *bigH;
34052fdbea25SAleksandr Guzovskiy 	bufwad_t *bigT;
34062fdbea25SAleksandr Guzovskiy 
34072fdbea25SAleksandr Guzovskiy 	/*
34082fdbea25SAleksandr Guzovskiy 	 * For each index from n to n + s, verify that the existing bufwad
34092fdbea25SAleksandr Guzovskiy 	 * in packobj matches the bufwads at the head and tail of the
34102fdbea25SAleksandr Guzovskiy 	 * corresponding chunk in bigobj.  Then update all three bufwads
34112fdbea25SAleksandr Guzovskiy 	 * with the new values we want to write out.
34122fdbea25SAleksandr Guzovskiy 	 */
34132fdbea25SAleksandr Guzovskiy 	for (i = 0; i < s; i++) {
34142fdbea25SAleksandr Guzovskiy 		/* LINTED */
34152fdbea25SAleksandr Guzovskiy 		pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
34162fdbea25SAleksandr Guzovskiy 		/* LINTED */
3417b24ab676SJeff Bonwick 		bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
34182fdbea25SAleksandr Guzovskiy 		/* LINTED */
3419b24ab676SJeff Bonwick 		bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
34202fdbea25SAleksandr Guzovskiy 
34212fdbea25SAleksandr Guzovskiy 		ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
34222fdbea25SAleksandr Guzovskiy 		ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
34232fdbea25SAleksandr Guzovskiy 
34242fdbea25SAleksandr Guzovskiy 		if (pack->bw_txg > txg)
34252fdbea25SAleksandr Guzovskiy 			fatal(0, "future leak: got %llx, open txg is %llx",
34262fdbea25SAleksandr Guzovskiy 			    pack->bw_txg, txg);
34272fdbea25SAleksandr Guzovskiy 
34282fdbea25SAleksandr Guzovskiy 		if (pack->bw_data != 0 && pack->bw_index != n + i)
34292fdbea25SAleksandr Guzovskiy 			fatal(0, "wrong index: got %llx, wanted %llx+%llx",
34302fdbea25SAleksandr Guzovskiy 			    pack->bw_index, n, i);
34312fdbea25SAleksandr Guzovskiy 
34322fdbea25SAleksandr Guzovskiy 		if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
34332fdbea25SAleksandr Guzovskiy 			fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
34342fdbea25SAleksandr Guzovskiy 
34352fdbea25SAleksandr Guzovskiy 		if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
34362fdbea25SAleksandr Guzovskiy 			fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
34372fdbea25SAleksandr Guzovskiy 
34382fdbea25SAleksandr Guzovskiy 		pack->bw_index = n + i;
34392fdbea25SAleksandr Guzovskiy 		pack->bw_txg = txg;
34402fdbea25SAleksandr Guzovskiy 		pack->bw_data = 1 + ztest_random(-2ULL);
34412fdbea25SAleksandr Guzovskiy 
34422fdbea25SAleksandr Guzovskiy 		*bigH = *pack;
34432fdbea25SAleksandr Guzovskiy 		*bigT = *pack;
34442fdbea25SAleksandr Guzovskiy 	}
34452fdbea25SAleksandr Guzovskiy }
34462fdbea25SAleksandr Guzovskiy 
34472fdbea25SAleksandr Guzovskiy void
3448b24ab676SJeff Bonwick ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id)
34492fdbea25SAleksandr Guzovskiy {
3450b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
3451b24ab676SJeff Bonwick 	ztest_od_t od[2];
34522fdbea25SAleksandr Guzovskiy 	dmu_tx_t *tx;
34532fdbea25SAleksandr Guzovskiy 	uint64_t i;
34542fdbea25SAleksandr Guzovskiy 	int error;
34552fdbea25SAleksandr Guzovskiy 	uint64_t n, s, txg;
34562fdbea25SAleksandr Guzovskiy 	bufwad_t *packbuf, *bigbuf;
3457b24ab676SJeff Bonwick 	uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
3458b24ab676SJeff Bonwick 	uint64_t blocksize = ztest_random_blocksize();
3459b24ab676SJeff Bonwick 	uint64_t chunksize = blocksize;
34602fdbea25SAleksandr Guzovskiy 	uint64_t regions = 997;
34612fdbea25SAleksandr Guzovskiy 	uint64_t stride = 123456789ULL;
34622fdbea25SAleksandr Guzovskiy 	uint64_t width = 9;
34632fdbea25SAleksandr Guzovskiy 	dmu_buf_t *bonus_db;
34642fdbea25SAleksandr Guzovskiy 	arc_buf_t **bigbuf_arcbufs;
3465b24ab676SJeff Bonwick 	dmu_object_info_t doi;
34662fdbea25SAleksandr Guzovskiy 
34672fdbea25SAleksandr Guzovskiy 	/*
34682fdbea25SAleksandr Guzovskiy 	 * This test uses two objects, packobj and bigobj, that are always
34692fdbea25SAleksandr Guzovskiy 	 * updated together (i.e. in the same tx) so that their contents are
34702fdbea25SAleksandr Guzovskiy 	 * in sync and can be compared.  Their contents relate to each other
34712fdbea25SAleksandr Guzovskiy 	 * in a simple way: packobj is a dense array of 'bufwad' structures,
34722fdbea25SAleksandr Guzovskiy 	 * while bigobj is a sparse array of the same bufwads.  Specifically,
34732fdbea25SAleksandr Guzovskiy 	 * for any index n, there are three bufwads that should be identical:
34742fdbea25SAleksandr Guzovskiy 	 *
34752fdbea25SAleksandr Guzovskiy 	 *	packobj, at offset n * sizeof (bufwad_t)
34762fdbea25SAleksandr Guzovskiy 	 *	bigobj, at the head of the nth chunk
34772fdbea25SAleksandr Guzovskiy 	 *	bigobj, at the tail of the nth chunk
34782fdbea25SAleksandr Guzovskiy 	 *
34792fdbea25SAleksandr Guzovskiy 	 * The chunk size is set equal to bigobj block size so that
34802fdbea25SAleksandr Guzovskiy 	 * dmu_assign_arcbuf() can be tested for object updates.
34812fdbea25SAleksandr Guzovskiy 	 */
34822fdbea25SAleksandr Guzovskiy 
34832fdbea25SAleksandr Guzovskiy 	/*
34842fdbea25SAleksandr Guzovskiy 	 * Read the directory info.  If it's the first time, set things up.
34852fdbea25SAleksandr Guzovskiy 	 */
3486b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
3487b24ab676SJeff Bonwick 	ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize);
3488b24ab676SJeff Bonwick 
3489b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
34902fdbea25SAleksandr Guzovskiy 		return;
34912fdbea25SAleksandr Guzovskiy 
3492b24ab676SJeff Bonwick 	bigobj = od[0].od_object;
3493b24ab676SJeff Bonwick 	packobj = od[1].od_object;
3494b24ab676SJeff Bonwick 	blocksize = od[0].od_blocksize;
3495b24ab676SJeff Bonwick 	chunksize = blocksize;
3496b24ab676SJeff Bonwick 	ASSERT(chunksize == od[1].od_gen);
34972fdbea25SAleksandr Guzovskiy 
3498b24ab676SJeff Bonwick 	VERIFY(dmu_object_info(os, bigobj, &doi) == 0);
3499b24ab676SJeff Bonwick 	VERIFY(ISP2(doi.doi_data_block_size));
3500b24ab676SJeff Bonwick 	VERIFY(chunksize == doi.doi_data_block_size);
3501b24ab676SJeff Bonwick 	VERIFY(chunksize >= 2 * sizeof (bufwad_t));
35022fdbea25SAleksandr Guzovskiy 
35032fdbea25SAleksandr Guzovskiy 	/*
35042fdbea25SAleksandr Guzovskiy 	 * Pick a random index and compute the offsets into packobj and bigobj.
35052fdbea25SAleksandr Guzovskiy 	 */
35062fdbea25SAleksandr Guzovskiy 	n = ztest_random(regions) * stride + ztest_random(width);
35072fdbea25SAleksandr Guzovskiy 	s = 1 + ztest_random(width - 1);
35082fdbea25SAleksandr Guzovskiy 
35092fdbea25SAleksandr Guzovskiy 	packoff = n * sizeof (bufwad_t);
35102fdbea25SAleksandr Guzovskiy 	packsize = s * sizeof (bufwad_t);
35112fdbea25SAleksandr Guzovskiy 
3512b24ab676SJeff Bonwick 	bigoff = n * chunksize;
3513b24ab676SJeff Bonwick 	bigsize = s * chunksize;
35142fdbea25SAleksandr Guzovskiy 
35152fdbea25SAleksandr Guzovskiy 	packbuf = umem_zalloc(packsize, UMEM_NOFAIL);
35162fdbea25SAleksandr Guzovskiy 	bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL);
35172fdbea25SAleksandr Guzovskiy 
3518b24ab676SJeff Bonwick 	VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db));
35192fdbea25SAleksandr Guzovskiy 
35202fdbea25SAleksandr Guzovskiy 	bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL);
35212fdbea25SAleksandr Guzovskiy 
35222fdbea25SAleksandr Guzovskiy 	/*
35232fdbea25SAleksandr Guzovskiy 	 * Iteration 0 test zcopy for DB_UNCACHED dbufs.
35242fdbea25SAleksandr Guzovskiy 	 * Iteration 1 test zcopy to already referenced dbufs.
35252fdbea25SAleksandr Guzovskiy 	 * Iteration 2 test zcopy to dirty dbuf in the same txg.
35262fdbea25SAleksandr Guzovskiy 	 * Iteration 3 test zcopy to dbuf dirty in previous txg.
35272fdbea25SAleksandr Guzovskiy 	 * Iteration 4 test zcopy when dbuf is no longer dirty.
35282fdbea25SAleksandr Guzovskiy 	 * Iteration 5 test zcopy when it can't be done.
35292fdbea25SAleksandr Guzovskiy 	 * Iteration 6 one more zcopy write.
35302fdbea25SAleksandr Guzovskiy 	 */
35312fdbea25SAleksandr Guzovskiy 	for (i = 0; i < 7; i++) {
35322fdbea25SAleksandr Guzovskiy 		uint64_t j;
35332fdbea25SAleksandr Guzovskiy 		uint64_t off;
35342fdbea25SAleksandr Guzovskiy 
35352fdbea25SAleksandr Guzovskiy 		/*
35362fdbea25SAleksandr Guzovskiy 		 * In iteration 5 (i == 5) use arcbufs
35372fdbea25SAleksandr Guzovskiy 		 * that don't match bigobj blksz to test
35382fdbea25SAleksandr Guzovskiy 		 * dmu_assign_arcbuf() when it can't directly
35392fdbea25SAleksandr Guzovskiy 		 * assign an arcbuf to a dbuf.
35402fdbea25SAleksandr Guzovskiy 		 */
35412fdbea25SAleksandr Guzovskiy 		for (j = 0; j < s; j++) {
35422fdbea25SAleksandr Guzovskiy 			if (i != 5) {
35432fdbea25SAleksandr Guzovskiy 				bigbuf_arcbufs[j] =
3544b24ab676SJeff Bonwick 				    dmu_request_arcbuf(bonus_db, chunksize);
35452fdbea25SAleksandr Guzovskiy 			} else {
35462fdbea25SAleksandr Guzovskiy 				bigbuf_arcbufs[2 * j] =
3547b24ab676SJeff Bonwick 				    dmu_request_arcbuf(bonus_db, chunksize / 2);
35482fdbea25SAleksandr Guzovskiy 				bigbuf_arcbufs[2 * j + 1] =
3549b24ab676SJeff Bonwick 				    dmu_request_arcbuf(bonus_db, chunksize / 2);
35502fdbea25SAleksandr Guzovskiy 			}
35512fdbea25SAleksandr Guzovskiy 		}
35522fdbea25SAleksandr Guzovskiy 
35532fdbea25SAleksandr Guzovskiy 		/*
35542fdbea25SAleksandr Guzovskiy 		 * Get a tx for the mods to both packobj and bigobj.
35552fdbea25SAleksandr Guzovskiy 		 */
35562fdbea25SAleksandr Guzovskiy 		tx = dmu_tx_create(os);
35572fdbea25SAleksandr Guzovskiy 
3558b24ab676SJeff Bonwick 		dmu_tx_hold_write(tx, packobj, packoff, packsize);
3559b24ab676SJeff Bonwick 		dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
35602fdbea25SAleksandr Guzovskiy 
3561b24ab676SJeff Bonwick 		txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3562b24ab676SJeff Bonwick 		if (txg == 0) {
35632fdbea25SAleksandr Guzovskiy 			umem_free(packbuf, packsize);
35642fdbea25SAleksandr Guzovskiy 			umem_free(bigbuf, bigsize);
35652fdbea25SAleksandr Guzovskiy 			for (j = 0; j < s; j++) {
35662fdbea25SAleksandr Guzovskiy 				if (i != 5) {
35672fdbea25SAleksandr Guzovskiy 					dmu_return_arcbuf(bigbuf_arcbufs[j]);
35682fdbea25SAleksandr Guzovskiy 				} else {
35692fdbea25SAleksandr Guzovskiy 					dmu_return_arcbuf(
35702fdbea25SAleksandr Guzovskiy 					    bigbuf_arcbufs[2 * j]);
35712fdbea25SAleksandr Guzovskiy 					dmu_return_arcbuf(
35722fdbea25SAleksandr Guzovskiy 					    bigbuf_arcbufs[2 * j + 1]);
35732fdbea25SAleksandr Guzovskiy 				}
35742fdbea25SAleksandr Guzovskiy 			}
35752fdbea25SAleksandr Guzovskiy 			umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
35762fdbea25SAleksandr Guzovskiy 			dmu_buf_rele(bonus_db, FTAG);
35772fdbea25SAleksandr Guzovskiy 			return;
35782fdbea25SAleksandr Guzovskiy 		}
35792fdbea25SAleksandr Guzovskiy 
35802fdbea25SAleksandr Guzovskiy 		/*
35812fdbea25SAleksandr Guzovskiy 		 * 50% of the time don't read objects in the 1st iteration to
35822fdbea25SAleksandr Guzovskiy 		 * test dmu_assign_arcbuf() for the case when there're no
35832fdbea25SAleksandr Guzovskiy 		 * existing dbufs for the specified offsets.
35842fdbea25SAleksandr Guzovskiy 		 */
35852fdbea25SAleksandr Guzovskiy 		if (i != 0 || ztest_random(2) != 0) {
3586b24ab676SJeff Bonwick 			error = dmu_read(os, packobj, packoff,
35877bfdf011SNeil Perrin 			    packsize, packbuf, DMU_READ_PREFETCH);
35882fdbea25SAleksandr Guzovskiy 			ASSERT3U(error, ==, 0);
3589b24ab676SJeff Bonwick 			error = dmu_read(os, bigobj, bigoff, bigsize,
35907bfdf011SNeil Perrin 			    bigbuf, DMU_READ_PREFETCH);
35912fdbea25SAleksandr Guzovskiy 			ASSERT3U(error, ==, 0);
35922fdbea25SAleksandr Guzovskiy 		}
35932fdbea25SAleksandr Guzovskiy 		compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize,
3594b24ab676SJeff Bonwick 		    n, chunksize, txg);
35952fdbea25SAleksandr Guzovskiy 
35962fdbea25SAleksandr Guzovskiy 		/*
35972fdbea25SAleksandr Guzovskiy 		 * We've verified all the old bufwads, and made new ones.
35982fdbea25SAleksandr Guzovskiy 		 * Now write them out.
35992fdbea25SAleksandr Guzovskiy 		 */
3600b24ab676SJeff Bonwick 		dmu_write(os, packobj, packoff, packsize, packbuf, tx);
3601b24ab676SJeff Bonwick 		if (zopt_verbose >= 7) {
36022fdbea25SAleksandr Guzovskiy 			(void) printf("writing offset %llx size %llx"
36032fdbea25SAleksandr Guzovskiy 			    " txg %llx\n",
36042fdbea25SAleksandr Guzovskiy 			    (u_longlong_t)bigoff,
36052fdbea25SAleksandr Guzovskiy 			    (u_longlong_t)bigsize,
36062fdbea25SAleksandr Guzovskiy 			    (u_longlong_t)txg);
36072fdbea25SAleksandr Guzovskiy 		}
3608b24ab676SJeff Bonwick 		for (off = bigoff, j = 0; j < s; j++, off += chunksize) {
36092fdbea25SAleksandr Guzovskiy 			dmu_buf_t *dbt;
36102fdbea25SAleksandr Guzovskiy 			if (i != 5) {
36112fdbea25SAleksandr Guzovskiy 				bcopy((caddr_t)bigbuf + (off - bigoff),
3612b24ab676SJeff Bonwick 				    bigbuf_arcbufs[j]->b_data, chunksize);
36132fdbea25SAleksandr Guzovskiy 			} else {
36142fdbea25SAleksandr Guzovskiy 				bcopy((caddr_t)bigbuf + (off - bigoff),
36152fdbea25SAleksandr Guzovskiy 				    bigbuf_arcbufs[2 * j]->b_data,
3616b24ab676SJeff Bonwick 				    chunksize / 2);
36172fdbea25SAleksandr Guzovskiy 				bcopy((caddr_t)bigbuf + (off - bigoff) +
3618b24ab676SJeff Bonwick 				    chunksize / 2,
36192fdbea25SAleksandr Guzovskiy 				    bigbuf_arcbufs[2 * j + 1]->b_data,
3620b24ab676SJeff Bonwick 				    chunksize / 2);
36212fdbea25SAleksandr Guzovskiy 			}
36222fdbea25SAleksandr Guzovskiy 
36232fdbea25SAleksandr Guzovskiy 			if (i == 1) {
3624b24ab676SJeff Bonwick 				VERIFY(dmu_buf_hold(os, bigobj, off,
362547cb52daSJeff Bonwick 				    FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0);
36262fdbea25SAleksandr Guzovskiy 			}
36272fdbea25SAleksandr Guzovskiy 			if (i != 5) {
36282fdbea25SAleksandr Guzovskiy 				dmu_assign_arcbuf(bonus_db, off,
36292fdbea25SAleksandr Guzovskiy 				    bigbuf_arcbufs[j], tx);
36302fdbea25SAleksandr Guzovskiy 			} else {
36312fdbea25SAleksandr Guzovskiy 				dmu_assign_arcbuf(bonus_db, off,
36322fdbea25SAleksandr Guzovskiy 				    bigbuf_arcbufs[2 * j], tx);
36332fdbea25SAleksandr Guzovskiy 				dmu_assign_arcbuf(bonus_db,
3634b24ab676SJeff Bonwick 				    off + chunksize / 2,
36352fdbea25SAleksandr Guzovskiy 				    bigbuf_arcbufs[2 * j + 1], tx);
36362fdbea25SAleksandr Guzovskiy 			}
36372fdbea25SAleksandr Guzovskiy 			if (i == 1) {
36382fdbea25SAleksandr Guzovskiy 				dmu_buf_rele(dbt, FTAG);
36392fdbea25SAleksandr Guzovskiy 			}
36402fdbea25SAleksandr Guzovskiy 		}
36412fdbea25SAleksandr Guzovskiy 		dmu_tx_commit(tx);
36422fdbea25SAleksandr Guzovskiy 
36432fdbea25SAleksandr Guzovskiy 		/*
36442fdbea25SAleksandr Guzovskiy 		 * Sanity check the stuff we just wrote.
36452fdbea25SAleksandr Guzovskiy 		 */
36462fdbea25SAleksandr Guzovskiy 		{
36472fdbea25SAleksandr Guzovskiy 			void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
36482fdbea25SAleksandr Guzovskiy 			void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
36492fdbea25SAleksandr Guzovskiy 
3650b24ab676SJeff Bonwick 			VERIFY(0 == dmu_read(os, packobj, packoff,
36517bfdf011SNeil Perrin 			    packsize, packcheck, DMU_READ_PREFETCH));
3652b24ab676SJeff Bonwick 			VERIFY(0 == dmu_read(os, bigobj, bigoff,
36537bfdf011SNeil Perrin 			    bigsize, bigcheck, DMU_READ_PREFETCH));
36542fdbea25SAleksandr Guzovskiy 
36552fdbea25SAleksandr Guzovskiy 			ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
36562fdbea25SAleksandr Guzovskiy 			ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
36572fdbea25SAleksandr Guzovskiy 
36582fdbea25SAleksandr Guzovskiy 			umem_free(packcheck, packsize);
36592fdbea25SAleksandr Guzovskiy 			umem_free(bigcheck, bigsize);
36602fdbea25SAleksandr Guzovskiy 		}
36612fdbea25SAleksandr Guzovskiy 		if (i == 2) {
36622fdbea25SAleksandr Guzovskiy 			txg_wait_open(dmu_objset_pool(os), 0);
36632fdbea25SAleksandr Guzovskiy 		} else if (i == 3) {
36642fdbea25SAleksandr Guzovskiy 			txg_wait_synced(dmu_objset_pool(os), 0);
36652fdbea25SAleksandr Guzovskiy 		}
36662fdbea25SAleksandr Guzovskiy 	}
36672fdbea25SAleksandr Guzovskiy 
36682fdbea25SAleksandr Guzovskiy 	dmu_buf_rele(bonus_db, FTAG);
36692fdbea25SAleksandr Guzovskiy 	umem_free(packbuf, packsize);
36702fdbea25SAleksandr Guzovskiy 	umem_free(bigbuf, bigsize);
36712fdbea25SAleksandr Guzovskiy 	umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
36722fdbea25SAleksandr Guzovskiy }
36732fdbea25SAleksandr Guzovskiy 
3674b24ab676SJeff Bonwick /* ARGSUSED */
36752fdbea25SAleksandr Guzovskiy void
3676b24ab676SJeff Bonwick ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id)
36774d31c452Smaybee {
3678b24ab676SJeff Bonwick 	ztest_od_t od[1];
3679b24ab676SJeff Bonwick 	uint64_t offset = (1ULL << (ztest_random(20) + 43)) +
3680b24ab676SJeff Bonwick 	    (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
36814d31c452Smaybee 
36824d31c452Smaybee 	/*
3683b24ab676SJeff Bonwick 	 * Have multiple threads write to large offsets in an object
3684b24ab676SJeff Bonwick 	 * to verify that parallel writes to an object -- even to the
3685b24ab676SJeff Bonwick 	 * same blocks within the object -- doesn't cause any trouble.
36864d31c452Smaybee 	 */
3687b24ab676SJeff Bonwick 	ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
3688b24ab676SJeff Bonwick 
3689b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3690b24ab676SJeff Bonwick 		return;
3691b24ab676SJeff Bonwick 
3692b24ab676SJeff Bonwick 	while (ztest_random(10) != 0)
3693b24ab676SJeff Bonwick 		ztest_io(zd, od[0].od_object, offset);
36944d31c452Smaybee }
36954d31c452Smaybee 
36964d31c452Smaybee void
3697b24ab676SJeff Bonwick ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id)
3698fa9e4066Sahrens {
3699b24ab676SJeff Bonwick 	ztest_od_t od[1];
3700b24ab676SJeff Bonwick 	uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) +
3701b24ab676SJeff Bonwick 	    (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
3702b24ab676SJeff Bonwick 	uint64_t count = ztest_random(20) + 1;
3703b24ab676SJeff Bonwick 	uint64_t blocksize = ztest_random_blocksize();
3704b24ab676SJeff Bonwick 	void *data;
3705fa9e4066Sahrens 
3706b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
3707fa9e4066Sahrens 
3708b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
3709e05725b1Sbonwick 		return;
3710fa9e4066Sahrens 
3711b24ab676SJeff Bonwick 	if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0)
3712e05725b1Sbonwick 		return;
3713e05725b1Sbonwick 
3714b24ab676SJeff Bonwick 	ztest_prealloc(zd, od[0].od_object, offset, count * blocksize);
3715e05725b1Sbonwick 
3716b24ab676SJeff Bonwick 	data = umem_zalloc(blocksize, UMEM_NOFAIL);
3717e05725b1Sbonwick 
3718b24ab676SJeff Bonwick 	while (ztest_random(count) != 0) {
3719b24ab676SJeff Bonwick 		uint64_t randoff = offset + (ztest_random(count) * blocksize);
3720b24ab676SJeff Bonwick 		if (ztest_write(zd, od[0].od_object, randoff, blocksize,
3721b24ab676SJeff Bonwick 		    data) != 0)
3722b24ab676SJeff Bonwick 			break;
3723b24ab676SJeff Bonwick 		while (ztest_random(4) != 0)
3724b24ab676SJeff Bonwick 			ztest_io(zd, od[0].od_object, randoff);
37252fdbea25SAleksandr Guzovskiy 	}
3726fa9e4066Sahrens 
3727b24ab676SJeff Bonwick 	umem_free(data, blocksize);
3728fa9e4066Sahrens }
3729fa9e4066Sahrens 
3730fa9e4066Sahrens /*
3731fa9e4066Sahrens  * Verify that zap_{create,destroy,add,remove,update} work as expected.
3732fa9e4066Sahrens  */
3733fa9e4066Sahrens #define	ZTEST_ZAP_MIN_INTS	1
3734fa9e4066Sahrens #define	ZTEST_ZAP_MAX_INTS	4
3735fa9e4066Sahrens #define	ZTEST_ZAP_MAX_PROPS	1000
3736fa9e4066Sahrens 
3737fa9e4066Sahrens void
3738b24ab676SJeff Bonwick ztest_zap(ztest_ds_t *zd, uint64_t id)
3739fa9e4066Sahrens {
3740b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
3741b24ab676SJeff Bonwick 	ztest_od_t od[1];
3742fa9e4066Sahrens 	uint64_t object;
3743fa9e4066Sahrens 	uint64_t txg, last_txg;
3744fa9e4066Sahrens 	uint64_t value[ZTEST_ZAP_MAX_INTS];
3745fa9e4066Sahrens 	uint64_t zl_ints, zl_intsize, prop;
3746fa9e4066Sahrens 	int i, ints;
3747fa9e4066Sahrens 	dmu_tx_t *tx;
3748fa9e4066Sahrens 	char propname[100], txgname[100];
3749fa9e4066Sahrens 	int error;
3750fa9e4066Sahrens 	char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" };
3751fa9e4066Sahrens 
3752b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0);
3753fa9e4066Sahrens 
3754b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
3755fa9e4066Sahrens 		return;
3756b24ab676SJeff Bonwick 
3757b24ab676SJeff Bonwick 	object = od[0].od_object;
3758b24ab676SJeff Bonwick 
3759fa9e4066Sahrens 	/*
3760fa9e4066Sahrens 	 * Generate a known hash collision, and verify that
3761fa9e4066Sahrens 	 * we can lookup and remove both entries.
3762fa9e4066Sahrens 	 */
3763b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
3764b24ab676SJeff Bonwick 	dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
3765b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3766b24ab676SJeff Bonwick 	if (txg == 0)
3767b24ab676SJeff Bonwick 		return;
3768fa9e4066Sahrens 	for (i = 0; i < 2; i++) {
3769fa9e4066Sahrens 		value[i] = i;
3770b24ab676SJeff Bonwick 		VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t),
3771b24ab676SJeff Bonwick 		    1, &value[i], tx));
3772fa9e4066Sahrens 	}
3773fa9e4066Sahrens 	for (i = 0; i < 2; i++) {
3774b24ab676SJeff Bonwick 		VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i],
3775b24ab676SJeff Bonwick 		    sizeof (uint64_t), 1, &value[i], tx));
3776b24ab676SJeff Bonwick 		VERIFY3U(0, ==,
3777b24ab676SJeff Bonwick 		    zap_length(os, object, hc[i], &zl_intsize, &zl_ints));
3778fa9e4066Sahrens 		ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
3779fa9e4066Sahrens 		ASSERT3U(zl_ints, ==, 1);
3780fa9e4066Sahrens 	}
3781fa9e4066Sahrens 	for (i = 0; i < 2; i++) {
3782b24ab676SJeff Bonwick 		VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx));
3783fa9e4066Sahrens 	}
3784fa9e4066Sahrens 	dmu_tx_commit(tx);
3785fa9e4066Sahrens 
3786b24ab676SJeff Bonwick 	/*
3787b24ab676SJeff Bonwick 	 * Generate a buch of random entries.
3788b24ab676SJeff Bonwick 	 */
3789fa9e4066Sahrens 	ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS);
3790fa9e4066Sahrens 
3791fa9e4066Sahrens 	prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
3792fa9e4066Sahrens 	(void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
3793fa9e4066Sahrens 	(void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
3794fa9e4066Sahrens 	bzero(value, sizeof (value));
3795fa9e4066Sahrens 	last_txg = 0;
3796fa9e4066Sahrens 
3797fa9e4066Sahrens 	/*
3798fa9e4066Sahrens 	 * If these zap entries already exist, validate their contents.
3799fa9e4066Sahrens 	 */
3800fa9e4066Sahrens 	error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
3801fa9e4066Sahrens 	if (error == 0) {
3802fa9e4066Sahrens 		ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
3803fa9e4066Sahrens 		ASSERT3U(zl_ints, ==, 1);
3804fa9e4066Sahrens 
3805e05725b1Sbonwick 		VERIFY(zap_lookup(os, object, txgname, zl_intsize,
3806e05725b1Sbonwick 		    zl_ints, &last_txg) == 0);
3807fa9e4066Sahrens 
3808e05725b1Sbonwick 		VERIFY(zap_length(os, object, propname, &zl_intsize,
3809e05725b1Sbonwick 		    &zl_ints) == 0);
3810fa9e4066Sahrens 
3811fa9e4066Sahrens 		ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
3812fa9e4066Sahrens 		ASSERT3U(zl_ints, ==, ints);
3813fa9e4066Sahrens 
3814e05725b1Sbonwick 		VERIFY(zap_lookup(os, object, propname, zl_intsize,
3815e05725b1Sbonwick 		    zl_ints, value) == 0);
3816fa9e4066Sahrens 
3817fa9e4066Sahrens 		for (i = 0; i < ints; i++) {
3818fa9e4066Sahrens 			ASSERT3U(value[i], ==, last_txg + object + i);
3819fa9e4066Sahrens 		}
3820fa9e4066Sahrens 	} else {
3821fa9e4066Sahrens 		ASSERT3U(error, ==, ENOENT);
3822fa9e4066Sahrens 	}
3823fa9e4066Sahrens 
3824fa9e4066Sahrens 	/*
3825fa9e4066Sahrens 	 * Atomically update two entries in our zap object.
3826fa9e4066Sahrens 	 * The first is named txg_%llu, and contains the txg
3827fa9e4066Sahrens 	 * in which the property was last updated.  The second
3828fa9e4066Sahrens 	 * is named prop_%llu, and the nth element of its value
3829fa9e4066Sahrens 	 * should be txg + object + n.
3830fa9e4066Sahrens 	 */
3831fa9e4066Sahrens 	tx = dmu_tx_create(os);
3832b24ab676SJeff Bonwick 	dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
3833b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3834b24ab676SJeff Bonwick 	if (txg == 0)
3835fa9e4066Sahrens 		return;
3836fa9e4066Sahrens 
3837fa9e4066Sahrens 	if (last_txg > txg)
3838e05725b1Sbonwick 		fatal(0, "zap future leak: old %llu new %llu", last_txg, txg);
3839fa9e4066Sahrens 
3840fa9e4066Sahrens 	for (i = 0; i < ints; i++)
3841fa9e4066Sahrens 		value[i] = txg + object + i;
3842fa9e4066Sahrens 
3843b24ab676SJeff Bonwick 	VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t),
3844b24ab676SJeff Bonwick 	    1, &txg, tx));
3845b24ab676SJeff Bonwick 	VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t),
3846b24ab676SJeff Bonwick 	    ints, value, tx));
3847fa9e4066Sahrens 
3848fa9e4066Sahrens 	dmu_tx_commit(tx);
3849fa9e4066Sahrens 
3850fa9e4066Sahrens 	/*
3851fa9e4066Sahrens 	 * Remove a random pair of entries.
3852fa9e4066Sahrens 	 */
3853fa9e4066Sahrens 	prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
3854fa9e4066Sahrens 	(void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
3855fa9e4066Sahrens 	(void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
3856fa9e4066Sahrens 
3857fa9e4066Sahrens 	error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
3858fa9e4066Sahrens 
3859fa9e4066Sahrens 	if (error == ENOENT)
3860e05725b1Sbonwick 		return;
3861fa9e4066Sahrens 
3862fa9e4066Sahrens 	ASSERT3U(error, ==, 0);
3863fa9e4066Sahrens 
3864fa9e4066Sahrens 	tx = dmu_tx_create(os);
3865b24ab676SJeff Bonwick 	dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
3866b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3867b24ab676SJeff Bonwick 	if (txg == 0)
3868fa9e4066Sahrens 		return;
3869b24ab676SJeff Bonwick 	VERIFY3U(0, ==, zap_remove(os, object, txgname, tx));
3870b24ab676SJeff Bonwick 	VERIFY3U(0, ==, zap_remove(os, object, propname, tx));
3871fa9e4066Sahrens 	dmu_tx_commit(tx);
3872fa9e4066Sahrens }
3873fa9e4066Sahrens 
387412a2833aSSanjeev Bagewadi /*
387512a2833aSSanjeev Bagewadi  * Testcase to test the upgrading of a microzap to fatzap.
387612a2833aSSanjeev Bagewadi  */
387712a2833aSSanjeev Bagewadi void
3878b24ab676SJeff Bonwick ztest_fzap(ztest_ds_t *zd, uint64_t id)
387912a2833aSSanjeev Bagewadi {
3880b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
3881b24ab676SJeff Bonwick 	ztest_od_t od[1];
3882b24ab676SJeff Bonwick 	uint64_t object, txg;
388312a2833aSSanjeev Bagewadi 
3884b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0);
388512a2833aSSanjeev Bagewadi 
3886b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
388712a2833aSSanjeev Bagewadi 		return;
3888b24ab676SJeff Bonwick 
3889b24ab676SJeff Bonwick 	object = od[0].od_object;
389012a2833aSSanjeev Bagewadi 
389112a2833aSSanjeev Bagewadi 	/*
3892b24ab676SJeff Bonwick 	 * Add entries to this ZAP and make sure it spills over
389312a2833aSSanjeev Bagewadi 	 * and gets upgraded to a fatzap. Also, since we are adding
3894b24ab676SJeff Bonwick 	 * 2050 entries we should see ptrtbl growth and leaf-block split.
389512a2833aSSanjeev Bagewadi 	 */
3896b24ab676SJeff Bonwick 	for (int i = 0; i < 2050; i++) {
3897b24ab676SJeff Bonwick 		char name[MAXNAMELEN];
3898b24ab676SJeff Bonwick 		uint64_t value = i;
3899b24ab676SJeff Bonwick 		dmu_tx_t *tx;
3900b24ab676SJeff Bonwick 		int error;
3901b24ab676SJeff Bonwick 
3902b24ab676SJeff Bonwick 		(void) snprintf(name, sizeof (name), "fzap-%llu-%llu",
3903b24ab676SJeff Bonwick 		    id, value);
390412a2833aSSanjeev Bagewadi 
390512a2833aSSanjeev Bagewadi 		tx = dmu_tx_create(os);
3906b24ab676SJeff Bonwick 		dmu_tx_hold_zap(tx, object, B_TRUE, name);
3907b24ab676SJeff Bonwick 		txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3908b24ab676SJeff Bonwick 		if (txg == 0)
390912a2833aSSanjeev Bagewadi 			return;
3910b24ab676SJeff Bonwick 		error = zap_add(os, object, name, sizeof (uint64_t), 1,
3911b24ab676SJeff Bonwick 		    &value, tx);
391212a2833aSSanjeev Bagewadi 		ASSERT(error == 0 || error == EEXIST);
391312a2833aSSanjeev Bagewadi 		dmu_tx_commit(tx);
391412a2833aSSanjeev Bagewadi 	}
391512a2833aSSanjeev Bagewadi }
391612a2833aSSanjeev Bagewadi 
3917b24ab676SJeff Bonwick /* ARGSUSED */
3918fa9e4066Sahrens void
3919b24ab676SJeff Bonwick ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
3920fa9e4066Sahrens {
3921b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
3922b24ab676SJeff Bonwick 	ztest_od_t od[1];
3923fa9e4066Sahrens 	uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc;
3924fa9e4066Sahrens 	dmu_tx_t *tx;
3925fa9e4066Sahrens 	int i, namelen, error;
3926b24ab676SJeff Bonwick 	int micro = ztest_random(2);
3927fa9e4066Sahrens 	char name[20], string_value[20];
3928fa9e4066Sahrens 	void *data;
3929fa9e4066Sahrens 
3930b24ab676SJeff Bonwick 	ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0);
3931b24ab676SJeff Bonwick 
3932b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3933b24ab676SJeff Bonwick 		return;
3934b24ab676SJeff Bonwick 
3935b24ab676SJeff Bonwick 	object = od[0].od_object;
3936b24ab676SJeff Bonwick 
3937fa9e4066Sahrens 	/*
3938fa9e4066Sahrens 	 * Generate a random name of the form 'xxx.....' where each
3939fa9e4066Sahrens 	 * x is a random printable character and the dots are dots.
3940fa9e4066Sahrens 	 * There are 94 such characters, and the name length goes from
3941fa9e4066Sahrens 	 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names.
3942fa9e4066Sahrens 	 */
3943fa9e4066Sahrens 	namelen = ztest_random(sizeof (name) - 5) + 5 + 1;
3944fa9e4066Sahrens 
3945fa9e4066Sahrens 	for (i = 0; i < 3; i++)
3946fa9e4066Sahrens 		name[i] = '!' + ztest_random('~' - '!' + 1);
3947fa9e4066Sahrens 	for (; i < namelen - 1; i++)
3948fa9e4066Sahrens 		name[i] = '.';
3949fa9e4066Sahrens 	name[i] = '\0';
3950fa9e4066Sahrens 
3951b24ab676SJeff Bonwick 	if ((namelen & 1) || micro) {
3952fa9e4066Sahrens 		wsize = sizeof (txg);
3953fa9e4066Sahrens 		wc = 1;
3954fa9e4066Sahrens 		data = &txg;
3955fa9e4066Sahrens 	} else {
3956fa9e4066Sahrens 		wsize = 1;
3957fa9e4066Sahrens 		wc = namelen;
3958fa9e4066Sahrens 		data = string_value;
3959fa9e4066Sahrens 	}
3960fa9e4066Sahrens 
3961fa9e4066Sahrens 	count = -1ULL;
3962fa9e4066Sahrens 	VERIFY(zap_count(os, object, &count) == 0);
3963fa9e4066Sahrens 	ASSERT(count != -1ULL);
3964fa9e4066Sahrens 
3965fa9e4066Sahrens 	/*
3966fa9e4066Sahrens 	 * Select an operation: length, lookup, add, update, remove.
3967fa9e4066Sahrens 	 */
3968fa9e4066Sahrens 	i = ztest_random(5);
3969fa9e4066Sahrens 
3970fa9e4066Sahrens 	if (i >= 2) {
3971fa9e4066Sahrens 		tx = dmu_tx_create(os);
3972b24ab676SJeff Bonwick 		dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
3973b24ab676SJeff Bonwick 		txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3974b24ab676SJeff Bonwick 		if (txg == 0)
3975fa9e4066Sahrens 			return;
3976fa9e4066Sahrens 		bcopy(name, string_value, namelen);
3977fa9e4066Sahrens 	} else {
3978fa9e4066Sahrens 		tx = NULL;
3979fa9e4066Sahrens 		txg = 0;
3980fa9e4066Sahrens 		bzero(string_value, namelen);
3981fa9e4066Sahrens 	}
3982fa9e4066Sahrens 
3983fa9e4066Sahrens 	switch (i) {
3984fa9e4066Sahrens 
3985fa9e4066Sahrens 	case 0:
3986fa9e4066Sahrens 		error = zap_length(os, object, name, &zl_wsize, &zl_wc);
3987fa9e4066Sahrens 		if (error == 0) {
3988fa9e4066Sahrens 			ASSERT3U(wsize, ==, zl_wsize);
3989fa9e4066Sahrens 			ASSERT3U(wc, ==, zl_wc);
3990fa9e4066Sahrens 		} else {
3991fa9e4066Sahrens 			ASSERT3U(error, ==, ENOENT);
3992fa9e4066Sahrens 		}
3993fa9e4066Sahrens 		break;
3994fa9e4066Sahrens 
3995fa9e4066Sahrens 	case 1:
3996fa9e4066Sahrens 		error = zap_lookup(os, object, name, wsize, wc, data);
3997fa9e4066Sahrens 		if (error == 0) {
3998fa9e4066Sahrens 			if (data == string_value &&
3999fa9e4066Sahrens 			    bcmp(name, data, namelen) != 0)
4000fa9e4066Sahrens 				fatal(0, "name '%s' != val '%s' len %d",
4001fa9e4066Sahrens 				    name, data, namelen);
4002fa9e4066Sahrens 		} else {
4003fa9e4066Sahrens 			ASSERT3U(error, ==, ENOENT);
4004fa9e4066Sahrens 		}
4005fa9e4066Sahrens 		break;
4006fa9e4066Sahrens 
4007fa9e4066Sahrens 	case 2:
4008fa9e4066Sahrens 		error = zap_add(os, object, name, wsize, wc, data, tx);
4009fa9e4066Sahrens 		ASSERT(error == 0 || error == EEXIST);
4010fa9e4066Sahrens 		break;
4011fa9e4066Sahrens 
4012fa9e4066Sahrens 	case 3:
4013e05725b1Sbonwick 		VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0);
4014fa9e4066Sahrens 		break;
4015fa9e4066Sahrens 
4016fa9e4066Sahrens 	case 4:
4017fa9e4066Sahrens 		error = zap_remove(os, object, name, tx);
4018fa9e4066Sahrens 		ASSERT(error == 0 || error == ENOENT);
4019fa9e4066Sahrens 		break;
4020fa9e4066Sahrens 	}
4021fa9e4066Sahrens 
4022fa9e4066Sahrens 	if (tx != NULL)
4023fa9e4066Sahrens 		dmu_tx_commit(tx);
4024fa9e4066Sahrens }
4025fa9e4066Sahrens 
4026d20e665cSRicardo M. Correia /*
4027d20e665cSRicardo M. Correia  * Commit callback data.
4028d20e665cSRicardo M. Correia  */
4029d20e665cSRicardo M. Correia typedef struct ztest_cb_data {
4030d20e665cSRicardo M. Correia 	list_node_t		zcd_node;
4031d20e665cSRicardo M. Correia 	uint64_t		zcd_txg;
4032d20e665cSRicardo M. Correia 	int			zcd_expected_err;
4033d20e665cSRicardo M. Correia 	boolean_t		zcd_added;
4034d20e665cSRicardo M. Correia 	boolean_t		zcd_called;
4035d20e665cSRicardo M. Correia 	spa_t			*zcd_spa;
4036d20e665cSRicardo M. Correia } ztest_cb_data_t;
4037d20e665cSRicardo M. Correia 
4038d20e665cSRicardo M. Correia /* This is the actual commit callback function */
4039d20e665cSRicardo M. Correia static void
4040d20e665cSRicardo M. Correia ztest_commit_callback(void *arg, int error)
4041d20e665cSRicardo M. Correia {
4042d20e665cSRicardo M. Correia 	ztest_cb_data_t *data = arg;
4043d20e665cSRicardo M. Correia 	uint64_t synced_txg;
4044d20e665cSRicardo M. Correia 
4045d20e665cSRicardo M. Correia 	VERIFY(data != NULL);
4046d20e665cSRicardo M. Correia 	VERIFY3S(data->zcd_expected_err, ==, error);
4047d20e665cSRicardo M. Correia 	VERIFY(!data->zcd_called);
4048d20e665cSRicardo M. Correia 
4049d20e665cSRicardo M. Correia 	synced_txg = spa_last_synced_txg(data->zcd_spa);
4050d20e665cSRicardo M. Correia 	if (data->zcd_txg > synced_txg)
4051d20e665cSRicardo M. Correia 		fatal(0, "commit callback of txg %" PRIu64 " called prematurely"
4052d20e665cSRicardo M. Correia 		    ", last synced txg = %" PRIu64 "\n", data->zcd_txg,
4053d20e665cSRicardo M. Correia 		    synced_txg);
4054d20e665cSRicardo M. Correia 
4055d20e665cSRicardo M. Correia 	data->zcd_called = B_TRUE;
4056d20e665cSRicardo M. Correia 
4057d20e665cSRicardo M. Correia 	if (error == ECANCELED) {
4058d20e665cSRicardo M. Correia 		ASSERT3U(data->zcd_txg, ==, 0);
4059d20e665cSRicardo M. Correia 		ASSERT(!data->zcd_added);
4060d20e665cSRicardo M. Correia 
4061d20e665cSRicardo M. Correia 		/*
4062d20e665cSRicardo M. Correia 		 * The private callback data should be destroyed here, but
4063d20e665cSRicardo M. Correia 		 * since we are going to check the zcd_called field after
4064d20e665cSRicardo M. Correia 		 * dmu_tx_abort(), we will destroy it there.
4065d20e665cSRicardo M. Correia 		 */
4066d20e665cSRicardo M. Correia 		return;
4067d20e665cSRicardo M. Correia 	}
4068d20e665cSRicardo M. Correia 
4069d20e665cSRicardo M. Correia 	/* Was this callback added to the global callback list? */
4070d20e665cSRicardo M. Correia 	if (!data->zcd_added)
4071d20e665cSRicardo M. Correia 		goto out;
4072d20e665cSRicardo M. Correia 
4073d20e665cSRicardo M. Correia 	ASSERT3U(data->zcd_txg, !=, 0);
4074d20e665cSRicardo M. Correia 
4075d20e665cSRicardo M. Correia 	/* Remove our callback from the list */
4076d20e665cSRicardo M. Correia 	(void) mutex_lock(&zcl.zcl_callbacks_lock);
4077d20e665cSRicardo M. Correia 	list_remove(&zcl.zcl_callbacks, data);
4078d20e665cSRicardo M. Correia 	(void) mutex_unlock(&zcl.zcl_callbacks_lock);
4079d20e665cSRicardo M. Correia 
4080d20e665cSRicardo M. Correia out:
4081d20e665cSRicardo M. Correia 	umem_free(data, sizeof (ztest_cb_data_t));
4082d20e665cSRicardo M. Correia }
4083d20e665cSRicardo M. Correia 
4084d20e665cSRicardo M. Correia /* Allocate and initialize callback data structure */
4085d20e665cSRicardo M. Correia static ztest_cb_data_t *
4086d20e665cSRicardo M. Correia ztest_create_cb_data(objset_t *os, uint64_t txg)
4087d20e665cSRicardo M. Correia {
4088d20e665cSRicardo M. Correia 	ztest_cb_data_t *cb_data;
4089d20e665cSRicardo M. Correia 
4090d20e665cSRicardo M. Correia 	cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL);
4091d20e665cSRicardo M. Correia 
4092d20e665cSRicardo M. Correia 	cb_data->zcd_txg = txg;
4093d20e665cSRicardo M. Correia 	cb_data->zcd_spa = dmu_objset_spa(os);
4094d20e665cSRicardo M. Correia 
4095d20e665cSRicardo M. Correia 	return (cb_data);
4096d20e665cSRicardo M. Correia }
4097d20e665cSRicardo M. Correia 
4098d20e665cSRicardo M. Correia /*
4099d20e665cSRicardo M. Correia  * If a number of txgs equal to this threshold have been created after a commit
4100d20e665cSRicardo M. Correia  * callback has been registered but not called, then we assume there is an
4101d20e665cSRicardo M. Correia  * implementation bug.
4102d20e665cSRicardo M. Correia  */
4103d20e665cSRicardo M. Correia #define	ZTEST_COMMIT_CALLBACK_THRESH	(TXG_CONCURRENT_STATES + 2)
4104d20e665cSRicardo M. Correia 
4105d20e665cSRicardo M. Correia /*
4106d20e665cSRicardo M. Correia  * Commit callback test.
4107d20e665cSRicardo M. Correia  */
4108d20e665cSRicardo M. Correia void
4109b24ab676SJeff Bonwick ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
4110d20e665cSRicardo M. Correia {
4111b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
4112b24ab676SJeff Bonwick 	ztest_od_t od[1];
4113d20e665cSRicardo M. Correia 	dmu_tx_t *tx;
4114d20e665cSRicardo M. Correia 	ztest_cb_data_t *cb_data[3], *tmp_cb;
4115d20e665cSRicardo M. Correia 	uint64_t old_txg, txg;
4116d20e665cSRicardo M. Correia 	int i, error;
4117d20e665cSRicardo M. Correia 
4118b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
4119b24ab676SJeff Bonwick 
4120b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4121b24ab676SJeff Bonwick 		return;
4122b24ab676SJeff Bonwick 
4123d20e665cSRicardo M. Correia 	tx = dmu_tx_create(os);
4124d20e665cSRicardo M. Correia 
4125d20e665cSRicardo M. Correia 	cb_data[0] = ztest_create_cb_data(os, 0);
4126d20e665cSRicardo M. Correia 	dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]);
4127d20e665cSRicardo M. Correia 
4128b24ab676SJeff Bonwick 	dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t));
4129d20e665cSRicardo M. Correia 
4130d20e665cSRicardo M. Correia 	/* Every once in a while, abort the transaction on purpose */
4131d20e665cSRicardo M. Correia 	if (ztest_random(100) == 0)
4132d20e665cSRicardo M. Correia 		error = -1;
4133d20e665cSRicardo M. Correia 
4134d20e665cSRicardo M. Correia 	if (!error)
4135d20e665cSRicardo M. Correia 		error = dmu_tx_assign(tx, TXG_NOWAIT);
4136d20e665cSRicardo M. Correia 
4137d20e665cSRicardo M. Correia 	txg = error ? 0 : dmu_tx_get_txg(tx);
4138d20e665cSRicardo M. Correia 
4139d20e665cSRicardo M. Correia 	cb_data[0]->zcd_txg = txg;
4140d20e665cSRicardo M. Correia 	cb_data[1] = ztest_create_cb_data(os, txg);
4141d20e665cSRicardo M. Correia 	dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]);
4142d20e665cSRicardo M. Correia 
4143d20e665cSRicardo M. Correia 	if (error) {
4144d20e665cSRicardo M. Correia 		/*
4145d20e665cSRicardo M. Correia 		 * It's not a strict requirement to call the registered
4146d20e665cSRicardo M. Correia 		 * callbacks from inside dmu_tx_abort(), but that's what
4147d20e665cSRicardo M. Correia 		 * it's supposed to happen in the current implementation
4148d20e665cSRicardo M. Correia 		 * so we will check for that.
4149d20e665cSRicardo M. Correia 		 */
4150d20e665cSRicardo M. Correia 		for (i = 0; i < 2; i++) {
4151d20e665cSRicardo M. Correia 			cb_data[i]->zcd_expected_err = ECANCELED;
4152d20e665cSRicardo M. Correia 			VERIFY(!cb_data[i]->zcd_called);
4153d20e665cSRicardo M. Correia 		}
4154d20e665cSRicardo M. Correia 
4155d20e665cSRicardo M. Correia 		dmu_tx_abort(tx);
4156d20e665cSRicardo M. Correia 
4157d20e665cSRicardo M. Correia 		for (i = 0; i < 2; i++) {
4158d20e665cSRicardo M. Correia 			VERIFY(cb_data[i]->zcd_called);
4159d20e665cSRicardo M. Correia 			umem_free(cb_data[i], sizeof (ztest_cb_data_t));
4160d20e665cSRicardo M. Correia 		}
4161d20e665cSRicardo M. Correia 
4162d20e665cSRicardo M. Correia 		return;
4163d20e665cSRicardo M. Correia 	}
4164d20e665cSRicardo M. Correia 
4165d20e665cSRicardo M. Correia 	cb_data[2] = ztest_create_cb_data(os, txg);
4166d20e665cSRicardo M. Correia 	dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]);
4167d20e665cSRicardo M. Correia 
4168d20e665cSRicardo M. Correia 	/*
4169d20e665cSRicardo M. Correia 	 * Read existing data to make sure there isn't a future leak.
4170d20e665cSRicardo M. Correia 	 */
4171b24ab676SJeff Bonwick 	VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t),
4172d20e665cSRicardo M. Correia 	    &old_txg, DMU_READ_PREFETCH));
4173d20e665cSRicardo M. Correia 
4174d20e665cSRicardo M. Correia 	if (old_txg > txg)
4175d20e665cSRicardo M. Correia 		fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64,
4176d20e665cSRicardo M. Correia 		    old_txg, txg);
4177d20e665cSRicardo M. Correia 
4178b24ab676SJeff Bonwick 	dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx);
4179d20e665cSRicardo M. Correia 
4180d20e665cSRicardo M. Correia 	(void) mutex_lock(&zcl.zcl_callbacks_lock);
4181d20e665cSRicardo M. Correia 
4182d20e665cSRicardo M. Correia 	/*
4183d20e665cSRicardo M. Correia 	 * Since commit callbacks don't have any ordering requirement and since
4184d20e665cSRicardo M. Correia 	 * it is theoretically possible for a commit callback to be called
4185d20e665cSRicardo M. Correia 	 * after an arbitrary amount of time has elapsed since its txg has been
4186d20e665cSRicardo M. Correia 	 * synced, it is difficult to reliably determine whether a commit
4187d20e665cSRicardo M. Correia 	 * callback hasn't been called due to high load or due to a flawed
4188d20e665cSRicardo M. Correia 	 * implementation.
4189d20e665cSRicardo M. Correia 	 *
4190d20e665cSRicardo M. Correia 	 * In practice, we will assume that if after a certain number of txgs a
4191d20e665cSRicardo M. Correia 	 * commit callback hasn't been called, then most likely there's an
4192d20e665cSRicardo M. Correia 	 * implementation bug..
4193d20e665cSRicardo M. Correia 	 */
4194d20e665cSRicardo M. Correia 	tmp_cb = list_head(&zcl.zcl_callbacks);
4195d20e665cSRicardo M. Correia 	if (tmp_cb != NULL &&
4196d20e665cSRicardo M. Correia 	    tmp_cb->zcd_txg > txg - ZTEST_COMMIT_CALLBACK_THRESH) {
4197d20e665cSRicardo M. Correia 		fatal(0, "Commit callback threshold exceeded, oldest txg: %"
4198d20e665cSRicardo M. Correia 		    PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg);
4199d20e665cSRicardo M. Correia 	}
4200d20e665cSRicardo M. Correia 
4201d20e665cSRicardo M. Correia 	/*
4202d20e665cSRicardo M. Correia 	 * Let's find the place to insert our callbacks.
4203d20e665cSRicardo M. Correia 	 *
4204d20e665cSRicardo M. Correia 	 * Even though the list is ordered by txg, it is possible for the
4205d20e665cSRicardo M. Correia 	 * insertion point to not be the end because our txg may already be
4206d20e665cSRicardo M. Correia 	 * quiescing at this point and other callbacks in the open txg
4207d20e665cSRicardo M. Correia 	 * (from other objsets) may have sneaked in.
4208d20e665cSRicardo M. Correia 	 */
4209d20e665cSRicardo M. Correia 	tmp_cb = list_tail(&zcl.zcl_callbacks);
4210d20e665cSRicardo M. Correia 	while (tmp_cb != NULL && tmp_cb->zcd_txg > txg)
4211d20e665cSRicardo M. Correia 		tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb);
4212d20e665cSRicardo M. Correia 
4213d20e665cSRicardo M. Correia 	/* Add the 3 callbacks to the list */
4214d20e665cSRicardo M. Correia 	for (i = 0; i < 3; i++) {
4215d20e665cSRicardo M. Correia 		if (tmp_cb == NULL)
4216d20e665cSRicardo M. Correia 			list_insert_head(&zcl.zcl_callbacks, cb_data[i]);
4217d20e665cSRicardo M. Correia 		else
4218d20e665cSRicardo M. Correia 			list_insert_after(&zcl.zcl_callbacks, tmp_cb,
4219d20e665cSRicardo M. Correia 			    cb_data[i]);
4220d20e665cSRicardo M. Correia 
4221d20e665cSRicardo M. Correia 		cb_data[i]->zcd_added = B_TRUE;
4222d20e665cSRicardo M. Correia 		VERIFY(!cb_data[i]->zcd_called);
4223d20e665cSRicardo M. Correia 
4224d20e665cSRicardo M. Correia 		tmp_cb = cb_data[i];
4225d20e665cSRicardo M. Correia 	}
4226d20e665cSRicardo M. Correia 
4227d20e665cSRicardo M. Correia 	(void) mutex_unlock(&zcl.zcl_callbacks_lock);
4228d20e665cSRicardo M. Correia 
4229d20e665cSRicardo M. Correia 	dmu_tx_commit(tx);
4230d20e665cSRicardo M. Correia }
4231d20e665cSRicardo M. Correia 
4232b24ab676SJeff Bonwick /* ARGSUSED */
4233fa9e4066Sahrens void
4234b24ab676SJeff Bonwick ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
4235fa9e4066Sahrens {
4236b24ab676SJeff Bonwick 	zfs_prop_t proplist[] = {
4237b24ab676SJeff Bonwick 		ZFS_PROP_CHECKSUM,
4238b24ab676SJeff Bonwick 		ZFS_PROP_COMPRESSION,
4239b24ab676SJeff Bonwick 		ZFS_PROP_COPIES,
4240b24ab676SJeff Bonwick 		ZFS_PROP_DEDUP
4241b24ab676SJeff Bonwick 	};
4242b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
4243fa9e4066Sahrens 
4244b24ab676SJeff Bonwick 	(void) rw_rdlock(&zs->zs_name_lock);
4245fa9e4066Sahrens 
4246b24ab676SJeff Bonwick 	for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++)
4247b24ab676SJeff Bonwick 		(void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
4248b24ab676SJeff Bonwick 		    ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
4249fa9e4066Sahrens 
4250b24ab676SJeff Bonwick 	(void) rw_unlock(&zs->zs_name_lock);
4251fa9e4066Sahrens }
4252fa9e4066Sahrens 
4253b24ab676SJeff Bonwick /* ARGSUSED */
4254b24ab676SJeff Bonwick void
4255b24ab676SJeff Bonwick ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
4256b24ab676SJeff Bonwick {
4257b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
4258b24ab676SJeff Bonwick 	nvlist_t *props = NULL;
4259ea8dc4b6Seschrock 
4260b24ab676SJeff Bonwick 	(void) rw_rdlock(&zs->zs_name_lock);
4261ea8dc4b6Seschrock 
4262b24ab676SJeff Bonwick 	(void) ztest_spa_prop_set_uint64(zs, ZPOOL_PROP_DEDUPDITTO,
4263b24ab676SJeff Bonwick 	    ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN));
4264fa9e4066Sahrens 
4265b24ab676SJeff Bonwick 	VERIFY3U(spa_prop_get(zs->zs_spa, &props), ==, 0);
4266fa9e4066Sahrens 
4267b24ab676SJeff Bonwick 	if (zopt_verbose >= 6)
4268b24ab676SJeff Bonwick 		dump_nvlist(props, 4);
4269fa9e4066Sahrens 
4270b24ab676SJeff Bonwick 	nvlist_free(props);
4271fa9e4066Sahrens 
4272b24ab676SJeff Bonwick 	(void) rw_unlock(&zs->zs_name_lock);
4273fa9e4066Sahrens }
4274fa9e4066Sahrens 
4275fa9e4066Sahrens /*
42765c987a37SChris Kirby  * Test snapshot hold/release and deferred destroy.
42775c987a37SChris Kirby  */
42785c987a37SChris Kirby void
4279b24ab676SJeff Bonwick ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
42805c987a37SChris Kirby {
42815c987a37SChris Kirby 	int error;
4282b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
42835c987a37SChris Kirby 	objset_t *origin;
42845c987a37SChris Kirby 	char snapname[100];
42855c987a37SChris Kirby 	char fullname[100];
42865c987a37SChris Kirby 	char clonename[100];
42875c987a37SChris Kirby 	char tag[100];
42885c987a37SChris Kirby 	char osname[MAXNAMELEN];
42895c987a37SChris Kirby 
42905c987a37SChris Kirby 	(void) rw_rdlock(&ztest_shared->zs_name_lock);
42915c987a37SChris Kirby 
42925c987a37SChris Kirby 	dmu_objset_name(os, osname);
42935c987a37SChris Kirby 
4294b24ab676SJeff Bonwick 	(void) snprintf(snapname, 100, "sh1_%llu", id);
42955c987a37SChris Kirby 	(void) snprintf(fullname, 100, "%s@%s", osname, snapname);
4296b24ab676SJeff Bonwick 	(void) snprintf(clonename, 100, "%s/ch1_%llu", osname, id);
4297b24ab676SJeff Bonwick 	(void) snprintf(tag, 100, "%tag_%llu", id);
42985c987a37SChris Kirby 
42995c987a37SChris Kirby 	/*
43005c987a37SChris Kirby 	 * Clean up from any previous run.
43015c987a37SChris Kirby 	 */
43025c987a37SChris Kirby 	(void) dmu_objset_destroy(clonename, B_FALSE);
43035c987a37SChris Kirby 	(void) dsl_dataset_user_release(osname, snapname, tag, B_FALSE);
43045c987a37SChris Kirby 	(void) dmu_objset_destroy(fullname, B_FALSE);
43055c987a37SChris Kirby 
43065c987a37SChris Kirby 	/*
43075c987a37SChris Kirby 	 * Create snapshot, clone it, mark snap for deferred destroy,
43085c987a37SChris Kirby 	 * destroy clone, verify snap was also destroyed.
43095c987a37SChris Kirby 	 */
43105c987a37SChris Kirby 	error = dmu_objset_snapshot(osname, snapname, NULL, FALSE);
43115c987a37SChris Kirby 	if (error) {
43125c987a37SChris Kirby 		if (error == ENOSPC) {
43135c987a37SChris Kirby 			ztest_record_enospc("dmu_objset_snapshot");
43145c987a37SChris Kirby 			goto out;
43155c987a37SChris Kirby 		}
43165c987a37SChris Kirby 		fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
43175c987a37SChris Kirby 	}
43185c987a37SChris Kirby 
43195c987a37SChris Kirby 	error = dmu_objset_hold(fullname, FTAG, &origin);
43205c987a37SChris Kirby 	if (error)
43215c987a37SChris Kirby 		fatal(0, "dmu_objset_hold(%s) = %d", fullname, error);
43225c987a37SChris Kirby 
43235c987a37SChris Kirby 	error = dmu_objset_clone(clonename, dmu_objset_ds(origin), 0);
43245c987a37SChris Kirby 	dmu_objset_rele(origin, FTAG);
43255c987a37SChris Kirby 	if (error) {
43265c987a37SChris Kirby 		if (error == ENOSPC) {
43275c987a37SChris Kirby 			ztest_record_enospc("dmu_objset_clone");
43285c987a37SChris Kirby 			goto out;
43295c987a37SChris Kirby 		}
43305c987a37SChris Kirby 		fatal(0, "dmu_objset_clone(%s) = %d", clonename, error);
43315c987a37SChris Kirby 	}
43325c987a37SChris Kirby 
43335c987a37SChris Kirby 	error = dmu_objset_destroy(fullname, B_TRUE);
43345c987a37SChris Kirby 	if (error) {
43355c987a37SChris Kirby 		fatal(0, "dmu_objset_destroy(%s, B_TRUE) = %d",
43365c987a37SChris Kirby 		    fullname, error);
43375c987a37SChris Kirby 	}
43385c987a37SChris Kirby 
43395c987a37SChris Kirby 	error = dmu_objset_destroy(clonename, B_FALSE);
43405c987a37SChris Kirby 	if (error)
43415c987a37SChris Kirby 		fatal(0, "dmu_objset_destroy(%s) = %d", clonename, error);
43425c987a37SChris Kirby 
43435c987a37SChris Kirby 	error = dmu_objset_hold(fullname, FTAG, &origin);
43445c987a37SChris Kirby 	if (error != ENOENT)
43455c987a37SChris Kirby 		fatal(0, "dmu_objset_hold(%s) = %d", fullname, error);
43465c987a37SChris Kirby 
43475c987a37SChris Kirby 	/*
43485c987a37SChris Kirby 	 * Create snapshot, add temporary hold, verify that we can't
43495c987a37SChris Kirby 	 * destroy a held snapshot, mark for deferred destroy,
43505c987a37SChris Kirby 	 * release hold, verify snapshot was destroyed.
43515c987a37SChris Kirby 	 */
43525c987a37SChris Kirby 	error = dmu_objset_snapshot(osname, snapname, NULL, FALSE);
43535c987a37SChris Kirby 	if (error) {
43545c987a37SChris Kirby 		if (error == ENOSPC) {
43555c987a37SChris Kirby 			ztest_record_enospc("dmu_objset_snapshot");
43565c987a37SChris Kirby 			goto out;
43575c987a37SChris Kirby 		}
43585c987a37SChris Kirby 		fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
43595c987a37SChris Kirby 	}
43605c987a37SChris Kirby 
4361c99e4bdcSChris Kirby 	error = dsl_dataset_user_hold(osname, snapname, tag, B_FALSE,
4362c99e4bdcSChris Kirby 	    B_TRUE, -1);
43635c987a37SChris Kirby 	if (error)
43645c987a37SChris Kirby 		fatal(0, "dsl_dataset_user_hold(%s)", fullname, tag);
43655c987a37SChris Kirby 
43665c987a37SChris Kirby 	error = dmu_objset_destroy(fullname, B_FALSE);
43675c987a37SChris Kirby 	if (error != EBUSY) {
43685c987a37SChris Kirby 		fatal(0, "dmu_objset_destroy(%s, B_FALSE) = %d",
43695c987a37SChris Kirby 		    fullname, error);
43705c987a37SChris Kirby 	}
43715c987a37SChris Kirby 
43725c987a37SChris Kirby 	error = dmu_objset_destroy(fullname, B_TRUE);
43735c987a37SChris Kirby 	if (error) {
43745c987a37SChris Kirby 		fatal(0, "dmu_objset_destroy(%s, B_TRUE) = %d",
43755c987a37SChris Kirby 		    fullname, error);
43765c987a37SChris Kirby 	}
43775c987a37SChris Kirby 
43785c987a37SChris Kirby 	error = dsl_dataset_user_release(osname, snapname, tag, B_FALSE);
43795c987a37SChris Kirby 	if (error)
43805c987a37SChris Kirby 		fatal(0, "dsl_dataset_user_release(%s)", fullname, tag);
43815c987a37SChris Kirby 
43825c987a37SChris Kirby 	VERIFY(dmu_objset_hold(fullname, FTAG, &origin) == ENOENT);
43835c987a37SChris Kirby 
43845c987a37SChris Kirby out:
43855c987a37SChris Kirby 	(void) rw_unlock(&ztest_shared->zs_name_lock);
43865c987a37SChris Kirby }
43875c987a37SChris Kirby 
43885c987a37SChris Kirby /*
4389fa9e4066Sahrens  * Inject random faults into the on-disk data.
4390fa9e4066Sahrens  */
4391b24ab676SJeff Bonwick /* ARGSUSED */
4392fa9e4066Sahrens void
4393b24ab676SJeff Bonwick ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
4394fa9e4066Sahrens {
4395b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
4396b24ab676SJeff Bonwick 	spa_t *spa = zs->zs_spa;
4397fa9e4066Sahrens 	int fd;
4398fa9e4066Sahrens 	uint64_t offset;
43991195e687SMark J Musante 	uint64_t leaves;
4400fa9e4066Sahrens 	uint64_t bad = 0x1990c0ffeedecade;
4401fa9e4066Sahrens 	uint64_t top, leaf;
4402fa9e4066Sahrens 	char path0[MAXPATHLEN];
4403fa9e4066Sahrens 	char pathrand[MAXPATHLEN];
4404fa9e4066Sahrens 	size_t fsize;
4405fa9e4066Sahrens 	int bshift = SPA_MAXBLOCKSHIFT + 2;	/* don't scrog all labels */
4406fa9e4066Sahrens 	int iters = 1000;
44071195e687SMark J Musante 	int maxfaults;
44081195e687SMark J Musante 	int mirror_save;
4409e14bb325SJeff Bonwick 	vdev_t *vd0 = NULL;
4410ea8dc4b6Seschrock 	uint64_t guid0 = 0;
44118f18d1faSGeorge Wilson 	boolean_t islog = B_FALSE;
4412ea8dc4b6Seschrock 
44131195e687SMark J Musante 	VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0);
44141195e687SMark J Musante 	maxfaults = MAXFAULTS();
44151195e687SMark J Musante 	leaves = MAX(zs->zs_mirrors, 1) * zopt_raidz;
44161195e687SMark J Musante 	mirror_save = zs->zs_mirrors;
44171195e687SMark J Musante 	VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
44181195e687SMark J Musante 
4419e14bb325SJeff Bonwick 	ASSERT(leaves >= 1);
4420fa9e4066Sahrens 
4421fa9e4066Sahrens 	/*
4422e14bb325SJeff Bonwick 	 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd.
4423fa9e4066Sahrens 	 */
4424e14bb325SJeff Bonwick 	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
4425e14bb325SJeff Bonwick 
4426e14bb325SJeff Bonwick 	if (ztest_random(2) == 0) {
4427e14bb325SJeff Bonwick 		/*
4428b24ab676SJeff Bonwick 		 * Inject errors on a normal data device or slog device.
4429e14bb325SJeff Bonwick 		 */
4430b24ab676SJeff Bonwick 		top = ztest_random_vdev_top(spa, B_TRUE);
44311195e687SMark J Musante 		leaf = ztest_random(leaves) + zs->zs_splits;
4432fa9e4066Sahrens 
4433fa9e4066Sahrens 		/*
4434e14bb325SJeff Bonwick 		 * Generate paths to the first leaf in this top-level vdev,
4435fa9e4066Sahrens 		 * and to the random leaf we selected.  We'll induce transient
4436e14bb325SJeff Bonwick 		 * write failures and random online/offline activity on leaf 0,
4437fa9e4066Sahrens 		 * and we'll write random garbage to the randomly chosen leaf.
4438fa9e4066Sahrens 		 */
4439e14bb325SJeff Bonwick 		(void) snprintf(path0, sizeof (path0), ztest_dev_template,
44401195e687SMark J Musante 		    zopt_dir, zopt_pool, top * leaves + zs->zs_splits);
4441e14bb325SJeff Bonwick 		(void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template,
4442e14bb325SJeff Bonwick 		    zopt_dir, zopt_pool, top * leaves + leaf);
4443e14bb325SJeff Bonwick 
4444e14bb325SJeff Bonwick 		vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0);
44458f18d1faSGeorge Wilson 		if (vd0 != NULL && vd0->vdev_top->vdev_islog)
44468f18d1faSGeorge Wilson 			islog = B_TRUE;
44478f18d1faSGeorge Wilson 
4448e14bb325SJeff Bonwick 		if (vd0 != NULL && maxfaults != 1) {
4449e14bb325SJeff Bonwick 			/*
4450e14bb325SJeff Bonwick 			 * Make vd0 explicitly claim to be unreadable,
4451e14bb325SJeff Bonwick 			 * or unwriteable, or reach behind its back
4452e14bb325SJeff Bonwick 			 * and close the underlying fd.  We can do this if
4453e14bb325SJeff Bonwick 			 * maxfaults == 0 because we'll fail and reexecute,
4454e14bb325SJeff Bonwick 			 * and we can do it if maxfaults >= 2 because we'll
4455e14bb325SJeff Bonwick 			 * have enough redundancy.  If maxfaults == 1, the
4456e14bb325SJeff Bonwick 			 * combination of this with injection of random data
4457e14bb325SJeff Bonwick 			 * corruption below exceeds the pool's fault tolerance.
4458e14bb325SJeff Bonwick 			 */
4459e14bb325SJeff Bonwick 			vdev_file_t *vf = vd0->vdev_tsd;
4460e14bb325SJeff Bonwick 
4461e14bb325SJeff Bonwick 			if (vf != NULL && ztest_random(3) == 0) {
4462e14bb325SJeff Bonwick 				(void) close(vf->vf_vnode->v_fd);
4463e14bb325SJeff Bonwick 				vf->vf_vnode->v_fd = -1;
4464e14bb325SJeff Bonwick 			} else if (ztest_random(2) == 0) {
4465e14bb325SJeff Bonwick 				vd0->vdev_cant_read = B_TRUE;
4466e14bb325SJeff Bonwick 			} else {
4467e14bb325SJeff Bonwick 				vd0->vdev_cant_write = B_TRUE;
4468e14bb325SJeff Bonwick 			}
4469e14bb325SJeff Bonwick 			guid0 = vd0->vdev_guid;
4470e14bb325SJeff Bonwick 		}
4471e14bb325SJeff Bonwick 	} else {
4472e14bb325SJeff Bonwick 		/*
4473e14bb325SJeff Bonwick 		 * Inject errors on an l2cache device.
4474e14bb325SJeff Bonwick 		 */
4475e14bb325SJeff Bonwick 		spa_aux_vdev_t *sav = &spa->spa_l2cache;
4476e14bb325SJeff Bonwick 
4477e14bb325SJeff Bonwick 		if (sav->sav_count == 0) {
4478e14bb325SJeff Bonwick 			spa_config_exit(spa, SCL_STATE, FTAG);
4479e14bb325SJeff Bonwick 			return;
4480e14bb325SJeff Bonwick 		}
4481e14bb325SJeff Bonwick 		vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)];
4482e14bb325SJeff Bonwick 		guid0 = vd0->vdev_guid;
4483e14bb325SJeff Bonwick 		(void) strcpy(path0, vd0->vdev_path);
4484e14bb325SJeff Bonwick 		(void) strcpy(pathrand, vd0->vdev_path);
4485e14bb325SJeff Bonwick 
4486e14bb325SJeff Bonwick 		leaf = 0;
4487e14bb325SJeff Bonwick 		leaves = 1;
4488e14bb325SJeff Bonwick 		maxfaults = INT_MAX;	/* no limit on cache devices */
4489e14bb325SJeff Bonwick 	}
4490fa9e4066Sahrens 
4491e14bb325SJeff Bonwick 	spa_config_exit(spa, SCL_STATE, FTAG);
4492fa9e4066Sahrens 
4493ea8dc4b6Seschrock 	/*
44948f18d1faSGeorge Wilson 	 * If we can tolerate two or more faults, or we're dealing
44958f18d1faSGeorge Wilson 	 * with a slog, randomly online/offline vd0.
4496ea8dc4b6Seschrock 	 */
44978f18d1faSGeorge Wilson 	if ((maxfaults >= 2 || islog) && guid0 != 0) {
44988ad4d6ddSJeff Bonwick 		if (ztest_random(10) < 6) {
44998ad4d6ddSJeff Bonwick 			int flags = (ztest_random(2) == 0 ?
45008ad4d6ddSJeff Bonwick 			    ZFS_OFFLINE_TEMPORARY : 0);
45018f18d1faSGeorge Wilson 
45028f18d1faSGeorge Wilson 			/*
45038f18d1faSGeorge Wilson 			 * We have to grab the zs_name_lock as writer to
45048f18d1faSGeorge Wilson 			 * prevent a race between offlining a slog and
45058f18d1faSGeorge Wilson 			 * destroying a dataset. Offlining the slog will
45068f18d1faSGeorge Wilson 			 * grab a reference on the dataset which may cause
45078f18d1faSGeorge Wilson 			 * dmu_objset_destroy() to fail with EBUSY thus
45088f18d1faSGeorge Wilson 			 * leaving the dataset in an inconsistent state.
45098f18d1faSGeorge Wilson 			 */
45108f18d1faSGeorge Wilson 			if (islog)
45118f18d1faSGeorge Wilson 				(void) rw_wrlock(&ztest_shared->zs_name_lock);
45128f18d1faSGeorge Wilson 
45138ad4d6ddSJeff Bonwick 			VERIFY(vdev_offline(spa, guid0, flags) != EBUSY);
45148f18d1faSGeorge Wilson 
45158f18d1faSGeorge Wilson 			if (islog)
45168f18d1faSGeorge Wilson 				(void) rw_unlock(&ztest_shared->zs_name_lock);
45178ad4d6ddSJeff Bonwick 		} else {
45188ad4d6ddSJeff Bonwick 			(void) vdev_online(spa, guid0, 0, NULL);
45198ad4d6ddSJeff Bonwick 		}
4520fa9e4066Sahrens 	}
4521fa9e4066Sahrens 
45228f18d1faSGeorge Wilson 	if (maxfaults == 0)
45238f18d1faSGeorge Wilson 		return;
45248f18d1faSGeorge Wilson 
4525fa9e4066Sahrens 	/*
4526ea8dc4b6Seschrock 	 * We have at least single-fault tolerance, so inject data corruption.
4527fa9e4066Sahrens 	 */
4528fa9e4066Sahrens 	fd = open(pathrand, O_RDWR);
4529fa9e4066Sahrens 
4530fa9e4066Sahrens 	if (fd == -1)	/* we hit a gap in the device namespace */
4531fa9e4066Sahrens 		return;
4532fa9e4066Sahrens 
4533fa9e4066Sahrens 	fsize = lseek(fd, 0, SEEK_END);
4534fa9e4066Sahrens 
4535fa9e4066Sahrens 	while (--iters != 0) {
4536fa9e4066Sahrens 		offset = ztest_random(fsize / (leaves << bshift)) *
4537fa9e4066Sahrens 		    (leaves << bshift) + (leaf << bshift) +
4538fa9e4066Sahrens 		    (ztest_random(1ULL << (bshift - 1)) & -8ULL);
4539fa9e4066Sahrens 
4540fa9e4066Sahrens 		if (offset >= fsize)
4541fa9e4066Sahrens 			continue;
4542fa9e4066Sahrens 
45431195e687SMark J Musante 		VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0);
45441195e687SMark J Musante 		if (mirror_save != zs->zs_mirrors) {
45451195e687SMark J Musante 			VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
45461195e687SMark J Musante 			(void) close(fd);
45471195e687SMark J Musante 			return;
45481195e687SMark J Musante 		}
4549fa9e4066Sahrens 
4550fa9e4066Sahrens 		if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad))
4551fa9e4066Sahrens 			fatal(1, "can't inject bad word at 0x%llx in %s",
4552fa9e4066Sahrens 			    offset, pathrand);
45531195e687SMark J Musante 
45541195e687SMark J Musante 		VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0);
45551195e687SMark J Musante 
45561195e687SMark J Musante 		if (zopt_verbose >= 7)
45571195e687SMark J Musante 			(void) printf("injected bad word into %s,"
45581195e687SMark J Musante 			    " offset 0x%llx\n", pathrand, (u_longlong_t)offset);
4559fa9e4066Sahrens 	}
4560fa9e4066Sahrens 
4561fa9e4066Sahrens 	(void) close(fd);
4562fa9e4066Sahrens }
4563fa9e4066Sahrens 
4564fa9e4066Sahrens /*
4565b24ab676SJeff Bonwick  * Verify that DDT repair works as expected.
4566fa9e4066Sahrens  */
4567fa9e4066Sahrens void
4568b24ab676SJeff Bonwick ztest_ddt_repair(ztest_ds_t *zd, uint64_t id)
4569fa9e4066Sahrens {
4570b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
4571b24ab676SJeff Bonwick 	spa_t *spa = zs->zs_spa;
4572b24ab676SJeff Bonwick 	objset_t *os = zd->zd_os;
4573b24ab676SJeff Bonwick 	ztest_od_t od[1];
4574b24ab676SJeff Bonwick 	uint64_t object, blocksize, txg, pattern, psize;
4575b24ab676SJeff Bonwick 	enum zio_checksum checksum = spa_dedup_checksum(spa);
4576b24ab676SJeff Bonwick 	dmu_buf_t *db;
4577b24ab676SJeff Bonwick 	dmu_tx_t *tx;
4578b24ab676SJeff Bonwick 	void *buf;
4579b24ab676SJeff Bonwick 	blkptr_t blk;
4580b24ab676SJeff Bonwick 	int copies = 2 * ZIO_DEDUPDITTO_MIN;
4581b24ab676SJeff Bonwick 
4582b24ab676SJeff Bonwick 	blocksize = ztest_random_blocksize();
4583b24ab676SJeff Bonwick 	blocksize = MIN(blocksize, 2048);	/* because we write so many */
4584b24ab676SJeff Bonwick 
4585b24ab676SJeff Bonwick 	ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
4586b24ab676SJeff Bonwick 
4587b24ab676SJeff Bonwick 	if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4588b24ab676SJeff Bonwick 		return;
4589b24ab676SJeff Bonwick 
4590b24ab676SJeff Bonwick 	/*
4591b24ab676SJeff Bonwick 	 * Take the name lock as writer to prevent anyone else from changing
4592b24ab676SJeff Bonwick 	 * the pool and dataset properies we need to maintain during this test.
4593b24ab676SJeff Bonwick 	 */
4594b24ab676SJeff Bonwick 	(void) rw_wrlock(&zs->zs_name_lock);
4595b24ab676SJeff Bonwick 
4596b24ab676SJeff Bonwick 	if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum,
4597b24ab676SJeff Bonwick 	    B_FALSE) != 0 ||
4598b24ab676SJeff Bonwick 	    ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1,
4599b24ab676SJeff Bonwick 	    B_FALSE) != 0) {
4600b24ab676SJeff Bonwick 		(void) rw_unlock(&zs->zs_name_lock);
4601b24ab676SJeff Bonwick 		return;
4602b24ab676SJeff Bonwick 	}
4603b24ab676SJeff Bonwick 
4604b24ab676SJeff Bonwick 	object = od[0].od_object;
4605b24ab676SJeff Bonwick 	blocksize = od[0].od_blocksize;
4606b24ab676SJeff Bonwick 	pattern = spa_guid(spa) ^ dmu_objset_fsid_guid(os);
4607b24ab676SJeff Bonwick 
4608b24ab676SJeff Bonwick 	ASSERT(object != 0);
4609b24ab676SJeff Bonwick 
4610b24ab676SJeff Bonwick 	tx = dmu_tx_create(os);
4611b24ab676SJeff Bonwick 	dmu_tx_hold_write(tx, object, 0, copies * blocksize);
4612b24ab676SJeff Bonwick 	txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
4613b24ab676SJeff Bonwick 	if (txg == 0) {
4614b24ab676SJeff Bonwick 		(void) rw_unlock(&zs->zs_name_lock);
4615b24ab676SJeff Bonwick 		return;
4616b24ab676SJeff Bonwick 	}
4617b24ab676SJeff Bonwick 
4618b24ab676SJeff Bonwick 	/*
4619b24ab676SJeff Bonwick 	 * Write all the copies of our block.
4620b24ab676SJeff Bonwick 	 */
4621b24ab676SJeff Bonwick 	for (int i = 0; i < copies; i++) {
4622b24ab676SJeff Bonwick 		uint64_t offset = i * blocksize;
462347cb52daSJeff Bonwick 		VERIFY(dmu_buf_hold(os, object, offset, FTAG, &db,
462447cb52daSJeff Bonwick 		    DMU_READ_NO_PREFETCH) == 0);
4625b24ab676SJeff Bonwick 		ASSERT(db->db_offset == offset);
4626b24ab676SJeff Bonwick 		ASSERT(db->db_size == blocksize);
4627b24ab676SJeff Bonwick 		ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) ||
4628b24ab676SJeff Bonwick 		    ztest_pattern_match(db->db_data, db->db_size, 0ULL));
4629b24ab676SJeff Bonwick 		dmu_buf_will_fill(db, tx);
4630b24ab676SJeff Bonwick 		ztest_pattern_set(db->db_data, db->db_size, pattern);
4631b24ab676SJeff Bonwick 		dmu_buf_rele(db, FTAG);
4632b24ab676SJeff Bonwick 	}
4633b24ab676SJeff Bonwick 
4634b24ab676SJeff Bonwick 	dmu_tx_commit(tx);
4635b24ab676SJeff Bonwick 	txg_wait_synced(spa_get_dsl(spa), txg);
4636b24ab676SJeff Bonwick 
4637b24ab676SJeff Bonwick 	/*
4638b24ab676SJeff Bonwick 	 * Find out what block we got.
4639b24ab676SJeff Bonwick 	 */
464047cb52daSJeff Bonwick 	VERIFY(dmu_buf_hold(os, object, 0, FTAG, &db,
464147cb52daSJeff Bonwick 	    DMU_READ_NO_PREFETCH) == 0);
4642b24ab676SJeff Bonwick 	blk = *((dmu_buf_impl_t *)db)->db_blkptr;
4643b24ab676SJeff Bonwick 	dmu_buf_rele(db, FTAG);
4644b24ab676SJeff Bonwick 
4645b24ab676SJeff Bonwick 	/*
4646b24ab676SJeff Bonwick 	 * Damage the block.  Dedup-ditto will save us when we read it later.
4647b24ab676SJeff Bonwick 	 */
4648b24ab676SJeff Bonwick 	psize = BP_GET_PSIZE(&blk);
4649b24ab676SJeff Bonwick 	buf = zio_buf_alloc(psize);
4650b24ab676SJeff Bonwick 	ztest_pattern_set(buf, psize, ~pattern);
4651b24ab676SJeff Bonwick 
4652b24ab676SJeff Bonwick 	(void) zio_wait(zio_rewrite(NULL, spa, 0, &blk,
4653b24ab676SJeff Bonwick 	    buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE,
4654b24ab676SJeff Bonwick 	    ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL));
4655b24ab676SJeff Bonwick 
4656b24ab676SJeff Bonwick 	zio_buf_free(buf, psize);
4657b24ab676SJeff Bonwick 
4658b24ab676SJeff Bonwick 	(void) rw_unlock(&zs->zs_name_lock);
4659b24ab676SJeff Bonwick }
4660b24ab676SJeff Bonwick 
4661b24ab676SJeff Bonwick /*
4662b24ab676SJeff Bonwick  * Scrub the pool.
4663b24ab676SJeff Bonwick  */
4664b24ab676SJeff Bonwick /* ARGSUSED */
4665b24ab676SJeff Bonwick void
4666b24ab676SJeff Bonwick ztest_scrub(ztest_ds_t *zd, uint64_t id)
4667b24ab676SJeff Bonwick {
4668b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
4669b24ab676SJeff Bonwick 	spa_t *spa = zs->zs_spa;
4670fa9e4066Sahrens 
46713f9d6ad7SLin Ling 	(void) spa_scan(spa, POOL_SCAN_SCRUB);
4672b24ab676SJeff Bonwick 	(void) poll(NULL, 0, 100); /* wait a moment, then force a restart */
46733f9d6ad7SLin Ling 	(void) spa_scan(spa, POOL_SCAN_SCRUB);
4674fa9e4066Sahrens }
4675fa9e4066Sahrens 
4676fa9e4066Sahrens /*
4677fa9e4066Sahrens  * Rename the pool to a different name and then rename it back.
4678fa9e4066Sahrens  */
4679b24ab676SJeff Bonwick /* ARGSUSED */
4680fa9e4066Sahrens void
4681b24ab676SJeff Bonwick ztest_spa_rename(ztest_ds_t *zd, uint64_t id)
4682fa9e4066Sahrens {
4683b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
4684fa9e4066Sahrens 	char *oldname, *newname;
4685fa9e4066Sahrens 	spa_t *spa;
4686fa9e4066Sahrens 
4687b24ab676SJeff Bonwick 	(void) rw_wrlock(&zs->zs_name_lock);
4688fa9e4066Sahrens 
4689b24ab676SJeff Bonwick 	oldname = zs->zs_pool;
4690fa9e4066Sahrens 	newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL);
4691fa9e4066Sahrens 	(void) strcpy(newname, oldname);
4692fa9e4066Sahrens 	(void) strcat(newname, "_tmp");
4693fa9e4066Sahrens 
4694fa9e4066Sahrens 	/*
4695fa9e4066Sahrens 	 * Do the rename
4696fa9e4066Sahrens 	 */
4697b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_rename(oldname, newname));
4698fa9e4066Sahrens 
4699fa9e4066Sahrens 	/*
4700fa9e4066Sahrens 	 * Try to open it under the old name, which shouldn't exist
4701fa9e4066Sahrens 	 */
4702b24ab676SJeff Bonwick 	VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
4703fa9e4066Sahrens 
4704fa9e4066Sahrens 	/*
4705fa9e4066Sahrens 	 * Open it under the new name and make sure it's still the same spa_t.
4706fa9e4066Sahrens 	 */
4707b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
4708fa9e4066Sahrens 
4709b24ab676SJeff Bonwick 	ASSERT(spa == zs->zs_spa);
4710fa9e4066Sahrens 	spa_close(spa, FTAG);
4711fa9e4066Sahrens 
4712fa9e4066Sahrens 	/*
4713fa9e4066Sahrens 	 * Rename it back to the original
4714fa9e4066Sahrens 	 */
4715b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_rename(newname, oldname));
4716fa9e4066Sahrens 
4717fa9e4066Sahrens 	/*
4718fa9e4066Sahrens 	 * Make sure it can still be opened
4719fa9e4066Sahrens 	 */
4720b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
4721fa9e4066Sahrens 
4722b24ab676SJeff Bonwick 	ASSERT(spa == zs->zs_spa);
4723fa9e4066Sahrens 	spa_close(spa, FTAG);
4724fa9e4066Sahrens 
4725fa9e4066Sahrens 	umem_free(newname, strlen(newname) + 1);
4726fa9e4066Sahrens 
4727b24ab676SJeff Bonwick 	(void) rw_unlock(&zs->zs_name_lock);
4728fa9e4066Sahrens }
4729fa9e4066Sahrens 
4730fa9e4066Sahrens /*
4731b24ab676SJeff Bonwick  * Verify pool integrity by running zdb.
4732fa9e4066Sahrens  */
4733fa9e4066Sahrens static void
4734b24ab676SJeff Bonwick ztest_run_zdb(char *pool)
4735fa9e4066Sahrens {
4736fa9e4066Sahrens 	int status;
4737fa9e4066Sahrens 	char zdb[MAXPATHLEN + MAXNAMELEN + 20];
4738fa9e4066Sahrens 	char zbuf[1024];
4739fa9e4066Sahrens 	char *bin;
47408654d025Sperrin 	char *ztest;
47418654d025Sperrin 	char *isa;
47428654d025Sperrin 	int isalen;
4743fa9e4066Sahrens 	FILE *fp;
4744fa9e4066Sahrens 
4745fa9e4066Sahrens 	(void) realpath(getexecname(), zdb);
4746fa9e4066Sahrens 
4747fa9e4066Sahrens 	/* zdb lives in /usr/sbin, while ztest lives in /usr/bin */
4748fa9e4066Sahrens 	bin = strstr(zdb, "/usr/bin/");
47498654d025Sperrin 	ztest = strstr(bin, "/ztest");
47508654d025Sperrin 	isa = bin + 8;
47518654d025Sperrin 	isalen = ztest - isa;
47528654d025Sperrin 	isa = strdup(isa);
4753fa9e4066Sahrens 	/* LINTED */
47543a57275aSck153898 	(void) sprintf(bin,
4755f0ba89beSJeff Bonwick 	    "/usr/sbin%.*s/zdb -bcc%s%s -U %s %s",
47568654d025Sperrin 	    isalen,
47578654d025Sperrin 	    isa,
4758fa9e4066Sahrens 	    zopt_verbose >= 3 ? "s" : "",
4759fa9e4066Sahrens 	    zopt_verbose >= 4 ? "v" : "",
4760f0ba89beSJeff Bonwick 	    spa_config_path,
476188b7b0f2SMatthew Ahrens 	    pool);
47628654d025Sperrin 	free(isa);
4763fa9e4066Sahrens 
4764fa9e4066Sahrens 	if (zopt_verbose >= 5)
4765fa9e4066Sahrens 		(void) printf("Executing %s\n", strstr(zdb, "zdb "));
4766fa9e4066Sahrens 
4767fa9e4066Sahrens 	fp = popen(zdb, "r");
4768fa9e4066Sahrens 
4769fa9e4066Sahrens 	while (fgets(zbuf, sizeof (zbuf), fp) != NULL)
4770fa9e4066Sahrens 		if (zopt_verbose >= 3)
4771fa9e4066Sahrens 			(void) printf("%s", zbuf);
4772fa9e4066Sahrens 
4773fa9e4066Sahrens 	status = pclose(fp);
4774fa9e4066Sahrens 
4775fa9e4066Sahrens 	if (status == 0)
4776fa9e4066Sahrens 		return;
4777fa9e4066Sahrens 
4778fa9e4066Sahrens 	ztest_dump_core = 0;
4779fa9e4066Sahrens 	if (WIFEXITED(status))
4780fa9e4066Sahrens 		fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status));
4781fa9e4066Sahrens 	else
4782fa9e4066Sahrens 		fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status));
4783fa9e4066Sahrens }
4784fa9e4066Sahrens 
4785fa9e4066Sahrens static void
4786fa9e4066Sahrens ztest_walk_pool_directory(char *header)
4787fa9e4066Sahrens {
4788fa9e4066Sahrens 	spa_t *spa = NULL;
4789fa9e4066Sahrens 
4790fa9e4066Sahrens 	if (zopt_verbose >= 6)
4791fa9e4066Sahrens 		(void) printf("%s\n", header);
4792fa9e4066Sahrens 
4793fa9e4066Sahrens 	mutex_enter(&spa_namespace_lock);
4794fa9e4066Sahrens 	while ((spa = spa_next(spa)) != NULL)
4795fa9e4066Sahrens 		if (zopt_verbose >= 6)
4796fa9e4066Sahrens 			(void) printf("\t%s\n", spa_name(spa));
4797fa9e4066Sahrens 	mutex_exit(&spa_namespace_lock);
4798fa9e4066Sahrens }
4799fa9e4066Sahrens 
4800fa9e4066Sahrens static void
4801fa9e4066Sahrens ztest_spa_import_export(char *oldname, char *newname)
4802fa9e4066Sahrens {
48038ad4d6ddSJeff Bonwick 	nvlist_t *config, *newconfig;
4804fa9e4066Sahrens 	uint64_t pool_guid;
4805fa9e4066Sahrens 	spa_t *spa;
4806fa9e4066Sahrens 
4807fa9e4066Sahrens 	if (zopt_verbose >= 4) {
4808fa9e4066Sahrens 		(void) printf("import/export: old = %s, new = %s\n",
4809fa9e4066Sahrens 		    oldname, newname);
4810fa9e4066Sahrens 	}
4811fa9e4066Sahrens 
4812fa9e4066Sahrens 	/*
4813fa9e4066Sahrens 	 * Clean up from previous runs.
4814fa9e4066Sahrens 	 */
4815fa9e4066Sahrens 	(void) spa_destroy(newname);
4816fa9e4066Sahrens 
4817fa9e4066Sahrens 	/*
4818fa9e4066Sahrens 	 * Get the pool's configuration and guid.
4819fa9e4066Sahrens 	 */
4820b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
4821fa9e4066Sahrens 
48228ad4d6ddSJeff Bonwick 	/*
48238ad4d6ddSJeff Bonwick 	 * Kick off a scrub to tickle scrub/export races.
48248ad4d6ddSJeff Bonwick 	 */
48258ad4d6ddSJeff Bonwick 	if (ztest_random(2) == 0)
48263f9d6ad7SLin Ling 		(void) spa_scan(spa, POOL_SCAN_SCRUB);
48278ad4d6ddSJeff Bonwick 
4828fa9e4066Sahrens 	pool_guid = spa_guid(spa);
4829fa9e4066Sahrens 	spa_close(spa, FTAG);
4830fa9e4066Sahrens 
4831fa9e4066Sahrens 	ztest_walk_pool_directory("pools before export");
4832fa9e4066Sahrens 
4833fa9e4066Sahrens 	/*
4834fa9e4066Sahrens 	 * Export it.
4835fa9e4066Sahrens 	 */
4836b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE));
4837fa9e4066Sahrens 
4838fa9e4066Sahrens 	ztest_walk_pool_directory("pools after export");
4839fa9e4066Sahrens 
4840fa9e4066Sahrens 	/*
48418ad4d6ddSJeff Bonwick 	 * Try to import it.
48428ad4d6ddSJeff Bonwick 	 */
48438ad4d6ddSJeff Bonwick 	newconfig = spa_tryimport(config);
48448ad4d6ddSJeff Bonwick 	ASSERT(newconfig != NULL);
48458ad4d6ddSJeff Bonwick 	nvlist_free(newconfig);
48468ad4d6ddSJeff Bonwick 
48478ad4d6ddSJeff Bonwick 	/*
4848fa9e4066Sahrens 	 * Import it under the new name.
4849fa9e4066Sahrens 	 */
4850b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_import(newname, config, NULL));
4851fa9e4066Sahrens 
4852fa9e4066Sahrens 	ztest_walk_pool_directory("pools after import");
4853fa9e4066Sahrens 
4854fa9e4066Sahrens 	/*
4855fa9e4066Sahrens 	 * Try to import it again -- should fail with EEXIST.
4856fa9e4066Sahrens 	 */
4857b24ab676SJeff Bonwick 	VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL));
4858fa9e4066Sahrens 
4859fa9e4066Sahrens 	/*
4860fa9e4066Sahrens 	 * Try to import it under a different name -- should fail with EEXIST.
4861fa9e4066Sahrens 	 */
4862b24ab676SJeff Bonwick 	VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL));
4863fa9e4066Sahrens 
4864fa9e4066Sahrens 	/*
4865fa9e4066Sahrens 	 * Verify that the pool is no longer visible under the old name.
4866fa9e4066Sahrens 	 */
4867b24ab676SJeff Bonwick 	VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
4868fa9e4066Sahrens 
4869fa9e4066Sahrens 	/*
4870fa9e4066Sahrens 	 * Verify that we can open and close the pool using the new name.
4871fa9e4066Sahrens 	 */
4872b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
4873fa9e4066Sahrens 	ASSERT(pool_guid == spa_guid(spa));
4874fa9e4066Sahrens 	spa_close(spa, FTAG);
4875fa9e4066Sahrens 
4876fa9e4066Sahrens 	nvlist_free(config);
4877fa9e4066Sahrens }
4878fa9e4066Sahrens 
48798ad4d6ddSJeff Bonwick static void
48808ad4d6ddSJeff Bonwick ztest_resume(spa_t *spa)
48818ad4d6ddSJeff Bonwick {
4882b24ab676SJeff Bonwick 	if (spa_suspended(spa) && zopt_verbose >= 6)
4883b24ab676SJeff Bonwick 		(void) printf("resuming from suspended state\n");
48848f18d1faSGeorge Wilson 	spa_vdev_state_enter(spa, SCL_NONE);
48858ad4d6ddSJeff Bonwick 	vdev_clear(spa, NULL);
48868ad4d6ddSJeff Bonwick 	(void) spa_vdev_state_exit(spa, NULL, 0);
488754d692b7SGeorge Wilson 	(void) zio_resume(spa);
48888ad4d6ddSJeff Bonwick }
48898ad4d6ddSJeff Bonwick 
48900a4e9518Sgw25295 static void *
48918ad4d6ddSJeff Bonwick ztest_resume_thread(void *arg)
48920a4e9518Sgw25295 {
4893e14bb325SJeff Bonwick 	spa_t *spa = arg;
48940a4e9518Sgw25295 
48950a4e9518Sgw25295 	while (!ztest_exiting) {
4896b24ab676SJeff Bonwick 		if (spa_suspended(spa))
48978ad4d6ddSJeff Bonwick 			ztest_resume(spa);
4898b24ab676SJeff Bonwick 		(void) poll(NULL, 0, 100);
48990a4e9518Sgw25295 	}
49000a4e9518Sgw25295 	return (NULL);
49010a4e9518Sgw25295 }
49020a4e9518Sgw25295 
4903fa9e4066Sahrens static void *
4904b24ab676SJeff Bonwick ztest_deadman_thread(void *arg)
4905fa9e4066Sahrens {
4906b24ab676SJeff Bonwick 	ztest_shared_t *zs = arg;
4907b24ab676SJeff Bonwick 	int grace = 300;
4908b24ab676SJeff Bonwick 	hrtime_t delta;
4909fa9e4066Sahrens 
4910b24ab676SJeff Bonwick 	delta = (zs->zs_thread_stop - zs->zs_thread_start) / NANOSEC + grace;
4911b24ab676SJeff Bonwick 
4912b24ab676SJeff Bonwick 	(void) poll(NULL, 0, (int)(1000 * delta));
4913b24ab676SJeff Bonwick 
4914b24ab676SJeff Bonwick 	fatal(0, "failed to complete within %d seconds of deadline", grace);
4915b24ab676SJeff Bonwick 
4916b24ab676SJeff Bonwick 	return (NULL);
4917fa9e4066Sahrens }
4918fa9e4066Sahrens 
4919b24ab676SJeff Bonwick static void
4920b24ab676SJeff Bonwick ztest_execute(ztest_info_t *zi, uint64_t id)
4921b24ab676SJeff Bonwick {
4922b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
4923b24ab676SJeff Bonwick 	ztest_ds_t *zd = &zs->zs_zd[id % zopt_datasets];
4924b24ab676SJeff Bonwick 	hrtime_t functime = gethrtime();
4925fa9e4066Sahrens 
4926b24ab676SJeff Bonwick 	for (int i = 0; i < zi->zi_iters; i++)
4927b24ab676SJeff Bonwick 		zi->zi_func(zd, id);
4928fa9e4066Sahrens 
4929b24ab676SJeff Bonwick 	functime = gethrtime() - functime;
4930fa9e4066Sahrens 
4931b24ab676SJeff Bonwick 	atomic_add_64(&zi->zi_call_count, 1);
4932fa9e4066Sahrens 	atomic_add_64(&zi->zi_call_time, functime);
4933fa9e4066Sahrens 
4934fa9e4066Sahrens 	if (zopt_verbose >= 4) {
4935fa9e4066Sahrens 		Dl_info dli;
4936fa9e4066Sahrens 		(void) dladdr((void *)zi->zi_func, &dli);
4937fa9e4066Sahrens 		(void) printf("%6.2f sec in %s\n",
4938fa9e4066Sahrens 		    (double)functime / NANOSEC, dli.dli_sname);
4939fa9e4066Sahrens 	}
4940b24ab676SJeff Bonwick }
4941b24ab676SJeff Bonwick 
4942b24ab676SJeff Bonwick static void *
4943b24ab676SJeff Bonwick ztest_thread(void *arg)
4944b24ab676SJeff Bonwick {
4945b24ab676SJeff Bonwick 	uint64_t id = (uintptr_t)arg;
4946b24ab676SJeff Bonwick 	ztest_shared_t *zs = ztest_shared;
4947b24ab676SJeff Bonwick 	uint64_t call_next;
4948b24ab676SJeff Bonwick 	hrtime_t now;
4949b24ab676SJeff Bonwick 	ztest_info_t *zi;
4950b24ab676SJeff Bonwick 
4951b24ab676SJeff Bonwick 	while ((now = gethrtime()) < zs->zs_thread_stop) {
4952b24ab676SJeff Bonwick 		/*
4953b24ab676SJeff Bonwick 		 * See if it's time to force a crash.
4954b24ab676SJeff Bonwick 		 */
4955b24ab676SJeff Bonwick 		if (now > zs->zs_thread_kill)
4956b24ab676SJeff Bonwick 			ztest_kill(zs);
4957fa9e4066Sahrens 
4958fa9e4066Sahrens 		/*
4959fa9e4066Sahrens 		 * If we're getting ENOSPC with some regularity, stop.
4960fa9e4066Sahrens 		 */
4961fa9e4066Sahrens 		if (zs->zs_enospc_count > 10)
4962fa9e4066Sahrens 			break;
4963b24ab676SJeff Bonwick 
4964b24ab676SJeff Bonwick 		/*
4965b24ab676SJeff Bonwick 		 * Pick a random function to execute.
4966b24ab676SJeff Bonwick 		 */
4967b24ab676SJeff Bonwick 		zi = &zs->zs_info[ztest_random(ZTEST_FUNCS)];
4968b24ab676SJeff Bonwick 		call_next = zi->zi_call_next;
4969b24ab676SJeff Bonwick 
4970b24ab676SJeff Bonwick 		if (now >= call_next &&
4971b24ab676SJeff Bonwick 		    atomic_cas_64(&zi->zi_call_next, call_next, call_next +
4972b24ab676SJeff Bonwick 		    ztest_random(2 * zi->zi_interval[0] + 1)) == call_next)
4973b24ab676SJeff Bonwick 			ztest_execute(zi, id);
4974fa9e4066Sahrens 	}
4975fa9e4066Sahrens 
4976fa9e4066Sahrens 	return (NULL);
4977fa9e4066Sahrens }
4978fa9e4066Sahrens 
4979b24ab676SJeff Bonwick static void
4980b24ab676SJeff Bonwick ztest_dataset_name(char *dsname, char *pool, int d)
4981b24ab676SJeff Bonwick {
4982b24ab676SJeff Bonwick 	(void) snprintf(dsname, MAXNAMELEN, "%s/ds_%d", pool, d);
4983b24ab676SJeff Bonwick }
4984b24ab676SJeff Bonwick 
4985b24ab676SJeff Bonwick static void
4986b24ab676SJeff Bonwick ztest_dataset_destroy(ztest_shared_t *zs, int d)
4987b24ab676SJeff Bonwick {
4988b24ab676SJeff Bonwick 	char name[MAXNAMELEN];
4989b24ab676SJeff Bonwick 
4990b24ab676SJeff Bonwick 	ztest_dataset_name(name, zs->zs_pool, d);
4991b24ab676SJeff Bonwick 
4992b24ab676SJeff Bonwick 	if (zopt_verbose >= 3)
4993b24ab676SJeff Bonwick 		(void) printf("Destroying %s to free up space\n", name);
4994b24ab676SJeff Bonwick 
4995b24ab676SJeff Bonwick 	/*
4996b24ab676SJeff Bonwick 	 * Cleanup any non-standard clones and snapshots.  In general,
4997b24ab676SJeff Bonwick 	 * ztest thread t operates on dataset (t % zopt_datasets),
4998b24ab676SJeff Bonwick 	 * so there may be more than one thing to clean up.
4999b24ab676SJeff Bonwick 	 */
5000b24ab676SJeff Bonwick 	for (int t = d; t < zopt_threads; t += zopt_datasets)
5001b24ab676SJeff Bonwick 		ztest_dsl_dataset_cleanup(name, t);
5002b24ab676SJeff Bonwick 
5003b24ab676SJeff Bonwick 	(void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
5004b24ab676SJeff Bonwick 	    DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
5005b24ab676SJeff Bonwick }
5006b24ab676SJeff Bonwick 
5007b24ab676SJeff Bonwick static void
5008b24ab676SJeff Bonwick ztest_dataset_dirobj_verify(ztest_ds_t *zd)
5009b24ab676SJeff Bonwick {
5010b24ab676SJeff Bonwick 	uint64_t usedobjs, dirobjs, scratch;
5011b24ab676SJeff Bonwick 
5012b24ab676SJeff Bonwick 	/*
5013b24ab676SJeff Bonwick 	 * ZTEST_DIROBJ is the object directory for the entire dataset.
5014b24ab676SJeff Bonwick 	 * Therefore, the number of objects in use should equal the
5015b24ab676SJeff Bonwick 	 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself.
5016b24ab676SJeff Bonwick 	 * If not, we have an object leak.
5017b24ab676SJeff Bonwick 	 *
5018b24ab676SJeff Bonwick 	 * Note that we can only check this in ztest_dataset_open(),
5019b24ab676SJeff Bonwick 	 * when the open-context and syncing-context values agree.
5020b24ab676SJeff Bonwick 	 * That's because zap_count() returns the open-context value,
5021b24ab676SJeff Bonwick 	 * while dmu_objset_space() returns the rootbp fill count.
5022b24ab676SJeff Bonwick 	 */
5023b24ab676SJeff Bonwick 	VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs));
5024b24ab676SJeff Bonwick 	dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch);
5025b24ab676SJeff Bonwick 	ASSERT3U(dirobjs + 1, ==, usedobjs);
5026b24ab676SJeff Bonwick }
5027b24ab676SJeff Bonwick 
5028b24ab676SJeff Bonwick static int
5029b24ab676SJeff Bonwick ztest_dataset_open(ztest_shared_t *zs, int d)
5030b24ab676SJeff Bonwick {
5031b24ab676SJeff Bonwick 	ztest_ds_t *zd = &zs->zs_zd[d];
5032b24ab676SJeff Bonwick 	uint64_t committed_seq = zd->zd_seq;
5033b24ab676SJeff Bonwick 	objset_t *os;
5034b24ab676SJeff Bonwick 	zilog_t *zilog;
5035b24ab676SJeff Bonwick 	char name[MAXNAMELEN];
5036b24ab676SJeff Bonwick 	int error;
5037b24ab676SJeff Bonwick 
5038b24ab676SJeff Bonwick 	ztest_dataset_name(name, zs->zs_pool, d);
5039b24ab676SJeff Bonwick 
5040b24ab676SJeff Bonwick 	(void) rw_rdlock(&zs->zs_name_lock);
5041b24ab676SJeff Bonwick 
504255da60b9SMark J Musante 	error = ztest_dataset_create(name);
5043b24ab676SJeff Bonwick 	if (error == ENOSPC) {
5044b24ab676SJeff Bonwick 		(void) rw_unlock(&zs->zs_name_lock);
5045b24ab676SJeff Bonwick 		ztest_record_enospc(FTAG);
5046b24ab676SJeff Bonwick 		return (error);
5047b24ab676SJeff Bonwick 	}
5048b24ab676SJeff Bonwick 	ASSERT(error == 0 || error == EEXIST);
5049b24ab676SJeff Bonwick 
5050b24ab676SJeff Bonwick 	VERIFY3U(dmu_objset_hold(name, zd, &os), ==, 0);
5051b24ab676SJeff Bonwick 	(void) rw_unlock(&zs->zs_name_lock);
5052b24ab676SJeff Bonwick 
5053b24ab676SJeff Bonwick 	ztest_zd_init(zd, os);
5054b24ab676SJeff Bonwick 
5055b24ab676SJeff Bonwick 	zilog = zd->zd_zilog;
5056b24ab676SJeff Bonwick 
5057b24ab676SJeff Bonwick 	if (zilog->zl_header->zh_claim_lr_seq != 0 &&
5058b24ab676SJeff Bonwick 	    zilog->zl_header->zh_claim_lr_seq < committed_seq)
5059b24ab676SJeff Bonwick 		fatal(0, "missing log records: claimed %llu < committed %llu",
5060b24ab676SJeff Bonwick 		    zilog->zl_header->zh_claim_lr_seq, committed_seq);
5061b24ab676SJeff Bonwick 
5062b24ab676SJeff Bonwick 	ztest_dataset_dirobj_verify(zd);
5063b24ab676SJeff Bonwick 
5064b24ab676SJeff Bonwick 	zil_replay(os, zd, ztest_replay_vector);
5065b24ab676SJeff Bonwick 
5066b24ab676SJeff Bonwick 	ztest_dataset_dirobj_verify(zd);
5067b24ab676SJeff Bonwick 
5068b24ab676SJeff Bonwick 	if (zopt_verbose >= 6)
5069b24ab676SJeff Bonwick 		(void) printf("%s replay %llu blocks, %llu records, seq %llu\n",
5070b24ab676SJeff Bonwick 		    zd->zd_name,
5071b24ab676SJeff Bonwick 		    (u_longlong_t)zilog->zl_parse_blk_count,
5072b24ab676SJeff Bonwick 		    (u_longlong_t)zilog->zl_parse_lr_count,
5073b24ab676SJeff Bonwick 		    (u_longlong_t)zilog->zl_replaying_seq);
5074b24ab676SJeff Bonwick 
5075b24ab676SJeff Bonwick 	zilog = zil_open(os, ztest_get_data);
5076b24ab676SJeff Bonwick 
5077b24ab676SJeff Bonwick 	if (zilog->zl_replaying_seq != 0 &&
5078b24ab676SJeff Bonwick 	    zilog->zl_replaying_seq < committed_seq)
5079b24ab676SJeff Bonwick 		fatal(0, "missing log records: replayed %llu < committed %llu",
5080b24ab676SJeff Bonwick 		    zilog->zl_replaying_seq, committed_seq);
5081b24ab676SJeff Bonwick 
5082b24ab676SJeff Bonwick 	return (0);
5083b24ab676SJeff Bonwick }
5084b24ab676SJeff Bonwick 
5085b24ab676SJeff Bonwick static void
5086b24ab676SJeff Bonwick ztest_dataset_close(ztest_shared_t *zs, int d)
5087b24ab676SJeff Bonwick {
5088b24ab676SJeff Bonwick 	ztest_ds_t *zd = &zs->zs_zd[d];
5089b24ab676SJeff Bonwick 
5090b24ab676SJeff Bonwick 	zil_close(zd->zd_zilog);
5091b24ab676SJeff Bonwick 	dmu_objset_rele(zd->zd_os, zd);
5092b24ab676SJeff Bonwick 
5093b24ab676SJeff Bonwick 	ztest_zd_fini(zd);
5094b24ab676SJeff Bonwick }
5095b24ab676SJeff Bonwick 
5096fa9e4066Sahrens /*
5097fa9e4066Sahrens  * Kick off threads to run tests on all datasets in parallel.
5098fa9e4066Sahrens  */
5099fa9e4066Sahrens static void
5100b24ab676SJeff Bonwick ztest_run(ztest_shared_t *zs)
5101fa9e4066Sahrens {
5102b24ab676SJeff Bonwick 	thread_t *tid;
5103fa9e4066Sahrens 	spa_t *spa;
5104e14bb325SJeff Bonwick 	thread_t resume_tid;
5105b24ab676SJeff Bonwick 	int error;
5106e14bb325SJeff Bonwick 
5107e14bb325SJeff Bonwick 	ztest_exiting = B_FALSE;
5108fa9e4066Sahrens 
5109b24ab676SJeff Bonwick 	/*
5110b24ab676SJeff Bonwick 	 * Initialize parent/child shared state.
5111b24ab676SJeff Bonwick 	 */
5112b24ab676SJeff Bonwick 	VERIFY(_mutex_init(&zs->zs_vdev_lock, USYNC_THREAD, NULL) == 0);
5113b24ab676SJeff Bonwick 	VERIFY(rwlock_init(&zs->zs_name_lock, USYNC_THREAD, NULL) == 0);
5114fa9e4066Sahrens 
5115b24ab676SJeff Bonwick 	zs->zs_thread_start = gethrtime();
5116b24ab676SJeff Bonwick 	zs->zs_thread_stop = zs->zs_thread_start + zopt_passtime * NANOSEC;
5117b24ab676SJeff Bonwick 	zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop);
5118b24ab676SJeff Bonwick 	zs->zs_thread_kill = zs->zs_thread_stop;
5119b24ab676SJeff Bonwick 	if (ztest_random(100) < zopt_killrate)
5120b24ab676SJeff Bonwick 		zs->zs_thread_kill -= ztest_random(zopt_passtime * NANOSEC);
5121b24ab676SJeff Bonwick 
5122b24ab676SJeff Bonwick 	(void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL);
5123d20e665cSRicardo M. Correia 
5124d20e665cSRicardo M. Correia 	list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
5125d20e665cSRicardo M. Correia 	    offsetof(ztest_cb_data_t, zcd_node));
5126d20e665cSRicardo M. Correia 
5127fa9e4066Sahrens 	/*
5128fa9e4066Sahrens 	 * Open our pool.
5129fa9e4066Sahrens 	 */
5130b24ab676SJeff Bonwick 	kernel_init(FREAD | FWRITE);
5131b24ab676SJeff Bonwick 	VERIFY(spa_open(zs->zs_pool, &spa, FTAG) == 0);
5132b24ab676SJeff Bonwick 	zs->zs_spa = spa;
5133b24ab676SJeff Bonwick 
5134b24ab676SJeff Bonwick 	spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN;
5135e14bb325SJeff Bonwick 
5136e14bb325SJeff Bonwick 	/*
51378ad4d6ddSJeff Bonwick 	 * We don't expect the pool to suspend unless maxfaults == 0,
51388ad4d6ddSJeff Bonwick 	 * in which case ztest_fault_inject() temporarily takes away
51398ad4d6ddSJeff Bonwick 	 * the only valid replica.
51408ad4d6ddSJeff Bonwick 	 */
51411195e687SMark J Musante 	if (MAXFAULTS() == 0)
51428ad4d6ddSJeff Bonwick 		spa->spa_failmode = ZIO_FAILURE_MODE_WAIT;
51438ad4d6ddSJeff Bonwick 	else
51448ad4d6ddSJeff Bonwick 		spa->spa_failmode = ZIO_FAILURE_MODE_PANIC;
51458ad4d6ddSJeff Bonwick 
51468ad4d6ddSJeff Bonwick 	/*
5147e14bb325SJeff Bonwick 	 * Create a thread to periodically resume suspended I/O.
5148e14bb325SJeff Bonwick 	 */
51498ad4d6ddSJeff Bonwick 	VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND,
5150e14bb325SJeff Bonwick 	    &resume_tid) == 0);
5151fa9e4066Sahrens 
5152fa9e4066Sahrens 	/*
5153b24ab676SJeff Bonwick 	 * Create a deadman thread to abort() if we hang.
5154b24ab676SJeff Bonwick 	 */
5155b24ab676SJeff Bonwick 	VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND,
5156b24ab676SJeff Bonwick 	    NULL) == 0);
5157b24ab676SJeff Bonwick 
5158b24ab676SJeff Bonwick 	/*
5159fa9e4066Sahrens 	 * Verify that we can safely inquire about about any object,
5160fa9e4066Sahrens 	 * whether it's allocated or not.  To make it interesting,
5161fa9e4066Sahrens 	 * we probe a 5-wide window around each power of two.
5162fa9e4066Sahrens 	 * This hits all edge cases, including zero and the max.
5163fa9e4066Sahrens 	 */
5164b24ab676SJeff Bonwick 	for (int t = 0; t < 64; t++) {
5165b24ab676SJeff Bonwick 		for (int d = -5; d <= 5; d++) {
5166fa9e4066Sahrens 			error = dmu_object_info(spa->spa_meta_objset,
5167fa9e4066Sahrens 			    (1ULL << t) + d, NULL);
5168ea8dc4b6Seschrock 			ASSERT(error == 0 || error == ENOENT ||
5169ea8dc4b6Seschrock 			    error == EINVAL);
5170fa9e4066Sahrens 		}
5171fa9e4066Sahrens 	}
5172fa9e4066Sahrens 
5173fa9e4066Sahrens 	/*
5174b24ab676SJeff Bonwick 	 * If we got any ENOSPC errors on the previous run, destroy something.
5175fa9e4066Sahrens 	 */
5176b24ab676SJeff Bonwick 	if (zs->zs_enospc_count != 0) {
5177b24ab676SJeff Bonwick 		int d = ztest_random(zopt_datasets);
5178b24ab676SJeff Bonwick 		ztest_dataset_destroy(zs, d);
5179b24ab676SJeff Bonwick 	}
5180fa9e4066Sahrens 	zs->zs_enospc_count = 0;
5181fa9e4066Sahrens 
5182b24ab676SJeff Bonwick 	tid = umem_zalloc(zopt_threads * sizeof (thread_t), UMEM_NOFAIL);
5183fa9e4066Sahrens 
5184fa9e4066Sahrens 	if (zopt_verbose >= 4)
5185fa9e4066Sahrens 		(void) printf("starting main threads...\n");
5186fa9e4066Sahrens 
5187b24ab676SJeff Bonwick 	/*
5188b24ab676SJeff Bonwick 	 * Kick off all the tests that run in parallel.
5189b24ab676SJeff Bonwick 	 */
5190b24ab676SJeff Bonwick 	for (int t = 0; t < zopt_threads; t++) {
5191b24ab676SJeff Bonwick 		if (t < zopt_datasets && ztest_dataset_open(zs, t) != 0)
5192b24ab676SJeff Bonwick 			return;
5193b24ab676SJeff Bonwick 		VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t,
5194b24ab676SJeff Bonwick 		    THR_BOUND, &tid[t]) == 0);
5195fa9e4066Sahrens 	}
5196fa9e4066Sahrens 
5197fa9e4066Sahrens 	/*
5198b24ab676SJeff Bonwick 	 * Wait for all of the tests to complete.  We go in reverse order
5199b24ab676SJeff Bonwick 	 * so we don't close datasets while threads are still using them.
5200fa9e4066Sahrens 	 */
5201b24ab676SJeff Bonwick 	for (int t = zopt_threads - 1; t >= 0; t--) {
5202b24ab676SJeff Bonwick 		VERIFY(thr_join(tid[t], NULL, NULL) == 0);
5203b24ab676SJeff Bonwick 		if (t < zopt_datasets)
5204b24ab676SJeff Bonwick 			ztest_dataset_close(zs, t);
5205fa9e4066Sahrens 	}
5206fa9e4066Sahrens 
5207ea8dc4b6Seschrock 	txg_wait_synced(spa_get_dsl(spa), 0);
5208fa9e4066Sahrens 
5209b24ab676SJeff Bonwick 	zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
5210b24ab676SJeff Bonwick 	zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
5211b24ab676SJeff Bonwick 
5212b24ab676SJeff Bonwick 	umem_free(tid, zopt_threads * sizeof (thread_t));
5213e14bb325SJeff Bonwick 
5214e14bb325SJeff Bonwick 	/* Kill the resume thread */
5215e14bb325SJeff Bonwick 	ztest_exiting = B_TRUE;
5216e14bb325SJeff Bonwick 	VERIFY(thr_join(resume_tid, NULL, NULL) == 0);
52178ad4d6ddSJeff Bonwick 	ztest_resume(spa);
5218e14bb325SJeff Bonwick 
5219fa9e4066Sahrens 	/*
5220fa9e4066Sahrens 	 * Right before closing the pool, kick off a bunch of async I/O;
5221fa9e4066Sahrens 	 * spa_close() should wait for it to complete.
5222fa9e4066Sahrens 	 */
5223b24ab676SJeff Bonwick 	for (uint64_t object = 1; object < 50; object++)
5224b24ab676SJeff Bonwick 		dmu_prefetch(spa->spa_meta_objset, object, 0, 1ULL << 20);
5225fa9e4066Sahrens 
5226e05725b1Sbonwick 	spa_close(spa, FTAG);
5227e05725b1Sbonwick 
5228b24ab676SJeff Bonwick 	/*
5229b24ab676SJeff Bonwick 	 * Verify that we can loop over all pools.
5230b24ab676SJeff Bonwick 	 */
5231b24ab676SJeff Bonwick 	mutex_enter(&spa_namespace_lock);
5232b24ab676SJeff Bonwick 	for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa))
5233b24ab676SJeff Bonwick 		if (zopt_verbose > 3)
5234b24ab676SJeff Bonwick 			(void) printf("spa_next: found %s\n", spa_name(spa));
5235b24ab676SJeff Bonwick 	mutex_exit(&spa_namespace_lock);
5236b24ab676SJeff Bonwick 
5237b24ab676SJeff Bonwick 	/*
5238b24ab676SJeff Bonwick 	 * Verify that we can export the pool and reimport it under a
5239b24ab676SJeff Bonwick 	 * different name.
5240b24ab676SJeff Bonwick 	 */
5241b24ab676SJeff Bonwick 	if (ztest_random(2) == 0) {
5242b24ab676SJeff Bonwick 		char name[MAXNAMELEN];
5243b24ab676SJeff Bonwick 		(void) snprintf(name, MAXNAMELEN, "%s_import", zs->zs_pool);
5244b24ab676SJeff Bonwick 		ztest_spa_import_export(zs->zs_pool, name);
5245b24ab676SJeff Bonwick 		ztest_spa_import_export(name, zs->zs_pool);
5246b24ab676SJeff Bonwick 	}
5247b24ab676SJeff Bonwick 
5248b24ab676SJeff Bonwick 	kernel_fini();
5249b24ab676SJeff Bonwick }
5250b24ab676SJeff Bonwick 
5251b24ab676SJeff Bonwick static void
5252b24ab676SJeff Bonwick ztest_freeze(ztest_shared_t *zs)
5253b24ab676SJeff Bonwick {
5254b24ab676SJeff Bonwick 	ztest_ds_t *zd = &zs->zs_zd[0];
5255b24ab676SJeff Bonwick 	spa_t *spa;
52562215e990SMark J Musante 	int numloops = 0;
5257b24ab676SJeff Bonwick 
5258b24ab676SJeff Bonwick 	if (zopt_verbose >= 3)
5259b24ab676SJeff Bonwick 		(void) printf("testing spa_freeze()...\n");
5260b24ab676SJeff Bonwick 
5261b24ab676SJeff Bonwick 	kernel_init(FREAD | FWRITE);
5262b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_open(zs->zs_pool, &spa, FTAG));
5263b24ab676SJeff Bonwick 	VERIFY3U(0, ==, ztest_dataset_open(zs, 0));
5264b24ab676SJeff Bonwick 
5265b24ab676SJeff Bonwick 	/*
5266b24ab676SJeff Bonwick 	 * Force the first log block to be transactionally allocated.
5267b24ab676SJeff Bonwick 	 * We have to do this before we freeze the pool -- otherwise
5268b24ab676SJeff Bonwick 	 * the log chain won't be anchored.
5269b24ab676SJeff Bonwick 	 */
5270b24ab676SJeff Bonwick 	while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) {
5271b24ab676SJeff Bonwick 		ztest_dmu_object_alloc_free(zd, 0);
5272*5002558fSNeil Perrin 		zil_commit(zd->zd_zilog, 0);
5273b24ab676SJeff Bonwick 	}
5274b24ab676SJeff Bonwick 
5275b24ab676SJeff Bonwick 	txg_wait_synced(spa_get_dsl(spa), 0);
5276b24ab676SJeff Bonwick 
5277b24ab676SJeff Bonwick 	/*
5278b24ab676SJeff Bonwick 	 * Freeze the pool.  This stops spa_sync() from doing anything,
5279b24ab676SJeff Bonwick 	 * so that the only way to record changes from now on is the ZIL.
5280b24ab676SJeff Bonwick 	 */
5281b24ab676SJeff Bonwick 	spa_freeze(spa);
5282b24ab676SJeff Bonwick 
5283b24ab676SJeff Bonwick 	/*
5284b24ab676SJeff Bonwick 	 * Run tests that generate log records but don't alter the pool config
5285b24ab676SJeff Bonwick 	 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc).
5286b24ab676SJeff Bonwick 	 * We do a txg_wait_synced() after each iteration to force the txg
5287b24ab676SJeff Bonwick 	 * to increase well beyond the last synced value in the uberblock.
5288b24ab676SJeff Bonwick 	 * The ZIL should be OK with that.
5289b24ab676SJeff Bonwick 	 */
52902215e990SMark J Musante 	while (ztest_random(10) != 0 && numloops++ < zopt_maxloops) {
5291b24ab676SJeff Bonwick 		ztest_dmu_write_parallel(zd, 0);
5292b24ab676SJeff Bonwick 		ztest_dmu_object_alloc_free(zd, 0);
5293b24ab676SJeff Bonwick 		txg_wait_synced(spa_get_dsl(spa), 0);
5294b24ab676SJeff Bonwick 	}
5295b24ab676SJeff Bonwick 
5296b24ab676SJeff Bonwick 	/*
5297b24ab676SJeff Bonwick 	 * Commit all of the changes we just generated.
5298b24ab676SJeff Bonwick 	 */
5299*5002558fSNeil Perrin 	zil_commit(zd->zd_zilog, 0);
5300b24ab676SJeff Bonwick 	txg_wait_synced(spa_get_dsl(spa), 0);
5301b24ab676SJeff Bonwick 
5302b24ab676SJeff Bonwick 	/*
5303b24ab676SJeff Bonwick 	 * Close our dataset and close the pool.
5304b24ab676SJeff Bonwick 	 */
5305b24ab676SJeff Bonwick 	ztest_dataset_close(zs, 0);
5306b24ab676SJeff Bonwick 	spa_close(spa, FTAG);
5307b24ab676SJeff Bonwick 	kernel_fini();
5308b24ab676SJeff Bonwick 
5309b24ab676SJeff Bonwick 	/*
5310b24ab676SJeff Bonwick 	 * Open and close the pool and dataset to induce log replay.
5311b24ab676SJeff Bonwick 	 */
5312b24ab676SJeff Bonwick 	kernel_init(FREAD | FWRITE);
5313b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_open(zs->zs_pool, &spa, FTAG));
5314b24ab676SJeff Bonwick 	VERIFY3U(0, ==, ztest_dataset_open(zs, 0));
5315b24ab676SJeff Bonwick 	ztest_dataset_close(zs, 0);
5316b24ab676SJeff Bonwick 	spa_close(spa, FTAG);
5317fa9e4066Sahrens 	kernel_fini();
5318d20e665cSRicardo M. Correia 
5319d20e665cSRicardo M. Correia 	list_destroy(&zcl.zcl_callbacks);
5320d20e665cSRicardo M. Correia 
5321d20e665cSRicardo M. Correia 	(void) _mutex_destroy(&zcl.zcl_callbacks_lock);
5322d20e665cSRicardo M. Correia 
5323d20e665cSRicardo M. Correia 	(void) rwlock_destroy(&zs->zs_name_lock);
5324d20e665cSRicardo M. Correia 	(void) _mutex_destroy(&zs->zs_vdev_lock);
5325fa9e4066Sahrens }
5326fa9e4066Sahrens 
5327fa9e4066Sahrens void
5328fa9e4066Sahrens print_time(hrtime_t t, char *timebuf)
5329fa9e4066Sahrens {
5330fa9e4066Sahrens 	hrtime_t s = t / NANOSEC;
5331fa9e4066Sahrens 	hrtime_t m = s / 60;
5332fa9e4066Sahrens 	hrtime_t h = m / 60;
5333fa9e4066Sahrens 	hrtime_t d = h / 24;
5334fa9e4066Sahrens 
5335fa9e4066Sahrens 	s -= m * 60;
5336fa9e4066Sahrens 	m -= h * 60;
5337fa9e4066Sahrens 	h -= d * 24;
5338fa9e4066Sahrens 
5339fa9e4066Sahrens 	timebuf[0] = '\0';
5340fa9e4066Sahrens 
5341fa9e4066Sahrens 	if (d)
5342fa9e4066Sahrens 		(void) sprintf(timebuf,
5343fa9e4066Sahrens 		    "%llud%02lluh%02llum%02llus", d, h, m, s);
5344fa9e4066Sahrens 	else if (h)
5345fa9e4066Sahrens 		(void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s);
5346fa9e4066Sahrens 	else if (m)
5347fa9e4066Sahrens 		(void) sprintf(timebuf, "%llum%02llus", m, s);
5348fa9e4066Sahrens 	else
5349fa9e4066Sahrens 		(void) sprintf(timebuf, "%llus", s);
5350fa9e4066Sahrens }
5351fa9e4066Sahrens 
53521195e687SMark J Musante static nvlist_t *
53531195e687SMark J Musante make_random_props()
53541195e687SMark J Musante {
53551195e687SMark J Musante 	nvlist_t *props;
53561195e687SMark J Musante 
53571195e687SMark J Musante 	if (ztest_random(2) == 0)
53581195e687SMark J Musante 		return (NULL);
53591195e687SMark J Musante 
53601195e687SMark J Musante 	VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
53611195e687SMark J Musante 	VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0);
53621195e687SMark J Musante 
53631195e687SMark J Musante 	(void) printf("props:\n");
53641195e687SMark J Musante 	dump_nvlist(props, 4);
53651195e687SMark J Musante 
53661195e687SMark J Musante 	return (props);
53671195e687SMark J Musante }
53681195e687SMark J Musante 
5369fa9e4066Sahrens /*
5370fa9e4066Sahrens  * Create a storage pool with the given name and initial vdev size.
5371b24ab676SJeff Bonwick  * Then test spa_freeze() functionality.
5372fa9e4066Sahrens  */
5373fa9e4066Sahrens static void
5374b24ab676SJeff Bonwick ztest_init(ztest_shared_t *zs)
5375fa9e4066Sahrens {
5376fa9e4066Sahrens 	spa_t *spa;
53771195e687SMark J Musante 	nvlist_t *nvroot, *props;
5378fa9e4066Sahrens 
5379b24ab676SJeff Bonwick 	VERIFY(_mutex_init(&zs->zs_vdev_lock, USYNC_THREAD, NULL) == 0);
5380b24ab676SJeff Bonwick 	VERIFY(rwlock_init(&zs->zs_name_lock, USYNC_THREAD, NULL) == 0);
5381b24ab676SJeff Bonwick 
5382fa9e4066Sahrens 	kernel_init(FREAD | FWRITE);
5383fa9e4066Sahrens 
5384fa9e4066Sahrens 	/*
5385fa9e4066Sahrens 	 * Create the storage pool.
5386fa9e4066Sahrens 	 */
5387b24ab676SJeff Bonwick 	(void) spa_destroy(zs->zs_pool);
538888ecc943SGeorge Wilson 	ztest_shared->zs_vdev_next_leaf = 0;
53891195e687SMark J Musante 	zs->zs_splits = 0;
53901195e687SMark J Musante 	zs->zs_mirrors = zopt_mirrors;
5391e14bb325SJeff Bonwick 	nvroot = make_vdev_root(NULL, NULL, zopt_vdev_size, 0,
53921195e687SMark J Musante 	    0, zopt_raidz, zs->zs_mirrors, 1);
53931195e687SMark J Musante 	props = make_random_props();
53941195e687SMark J Musante 	VERIFY3U(0, ==, spa_create(zs->zs_pool, nvroot, props, NULL, NULL));
5395fa9e4066Sahrens 	nvlist_free(nvroot);
5396fa9e4066Sahrens 
5397b24ab676SJeff Bonwick 	VERIFY3U(0, ==, spa_open(zs->zs_pool, &spa, FTAG));
5398d6e555bdSGeorge Wilson 	metaslab_sz = 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
5399fa9e4066Sahrens 	spa_close(spa, FTAG);
5400fa9e4066Sahrens 
5401fa9e4066Sahrens 	kernel_fini();
5402b24ab676SJeff Bonwick 
5403b24ab676SJeff Bonwick 	ztest_run_zdb(zs->zs_pool);
5404b24ab676SJeff Bonwick 
5405b24ab676SJeff Bonwick 	ztest_freeze(zs);
5406b24ab676SJeff Bonwick 
5407b24ab676SJeff Bonwick 	ztest_run_zdb(zs->zs_pool);
5408fa9e4066Sahrens }
5409fa9e4066Sahrens 
5410fa9e4066Sahrens int
5411fa9e4066Sahrens main(int argc, char **argv)
5412fa9e4066Sahrens {
5413fa9e4066Sahrens 	int kills = 0;
5414fa9e4066Sahrens 	int iters = 0;
5415fa9e4066Sahrens 	ztest_shared_t *zs;
5416b24ab676SJeff Bonwick 	size_t shared_size;
5417fa9e4066Sahrens 	ztest_info_t *zi;
5418fa9e4066Sahrens 	char timebuf[100];
5419fa9e4066Sahrens 	char numbuf[6];
5420b24ab676SJeff Bonwick 	spa_t *spa;
5421fa9e4066Sahrens 
5422fa9e4066Sahrens 	(void) setvbuf(stdout, NULL, _IOLBF, 0);
5423fa9e4066Sahrens 
5424fa9e4066Sahrens 	ztest_random_fd = open("/dev/urandom", O_RDONLY);
5425fa9e4066Sahrens 
5426fa9e4066Sahrens 	process_options(argc, argv);
5427fa9e4066Sahrens 
5428f0ba89beSJeff Bonwick 	/* Override location of zpool.cache */
5429f0ba89beSJeff Bonwick 	(void) asprintf((char **)&spa_config_path, "%s/zpool.cache", zopt_dir);
5430f0ba89beSJeff Bonwick 
5431ea8dc4b6Seschrock 	/*
5432ea8dc4b6Seschrock 	 * Blow away any existing copy of zpool.cache
5433ea8dc4b6Seschrock 	 */
5434ea8dc4b6Seschrock 	if (zopt_init != 0)
5435f0ba89beSJeff Bonwick 		(void) remove(spa_config_path);
5436ea8dc4b6Seschrock 
5437b24ab676SJeff Bonwick 	shared_size = sizeof (*zs) + zopt_datasets * sizeof (ztest_ds_t);
5438b24ab676SJeff Bonwick 
5439fa9e4066Sahrens 	zs = ztest_shared = (void *)mmap(0,
5440b24ab676SJeff Bonwick 	    P2ROUNDUP(shared_size, getpagesize()),
5441fa9e4066Sahrens 	    PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
5442fa9e4066Sahrens 
5443fa9e4066Sahrens 	if (zopt_verbose >= 1) {
5444fa9e4066Sahrens 		(void) printf("%llu vdevs, %d datasets, %d threads,"
5445fa9e4066Sahrens 		    " %llu seconds...\n",
5446ecc2d604Sbonwick 		    (u_longlong_t)zopt_vdevs, zopt_datasets, zopt_threads,
5447fa9e4066Sahrens 		    (u_longlong_t)zopt_time);
5448fa9e4066Sahrens 	}
5449fa9e4066Sahrens 
5450fa9e4066Sahrens 	/*
5451fa9e4066Sahrens 	 * Create and initialize our storage pool.
5452fa9e4066Sahrens 	 */
5453b24ab676SJeff Bonwick 	for (int i = 1; i <= zopt_init; i++) {
5454fa9e4066Sahrens 		bzero(zs, sizeof (ztest_shared_t));
5455fa9e4066Sahrens 		if (zopt_verbose >= 3 && zopt_init != 1)
5456fa9e4066Sahrens 			(void) printf("ztest_init(), pass %d\n", i);
5457b24ab676SJeff Bonwick 		zs->zs_pool = zopt_pool;
5458b24ab676SJeff Bonwick 		ztest_init(zs);
5459fa9e4066Sahrens 	}
5460fa9e4066Sahrens 
5461b24ab676SJeff Bonwick 	zs->zs_pool = zopt_pool;
5462b24ab676SJeff Bonwick 	zs->zs_proc_start = gethrtime();
5463b24ab676SJeff Bonwick 	zs->zs_proc_stop = zs->zs_proc_start + zopt_time * NANOSEC;
5464b24ab676SJeff Bonwick 
5465b24ab676SJeff Bonwick 	for (int f = 0; f < ZTEST_FUNCS; f++) {
5466fa9e4066Sahrens 		zi = &zs->zs_info[f];
5467fa9e4066Sahrens 		*zi = ztest_info[f];
5468b24ab676SJeff Bonwick 		if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop)
5469b24ab676SJeff Bonwick 			zi->zi_call_next = UINT64_MAX;
5470fa9e4066Sahrens 		else
5471b24ab676SJeff Bonwick 			zi->zi_call_next = zs->zs_proc_start +
5472b24ab676SJeff Bonwick 			    ztest_random(2 * zi->zi_interval[0] + 1);
5473fa9e4066Sahrens 	}
5474fa9e4066Sahrens 
5475fa9e4066Sahrens 	/*
5476fa9e4066Sahrens 	 * Run the tests in a loop.  These tests include fault injection
5477fa9e4066Sahrens 	 * to verify that self-healing data works, and forced crashes
5478fa9e4066Sahrens 	 * to verify that we never lose on-disk consistency.
5479fa9e4066Sahrens 	 */
5480b24ab676SJeff Bonwick 	while (gethrtime() < zs->zs_proc_stop) {
5481fa9e4066Sahrens 		int status;
5482fa9e4066Sahrens 		pid_t pid;
5483fa9e4066Sahrens 
5484fa9e4066Sahrens 		/*
5485fa9e4066Sahrens 		 * Initialize the workload counters for each function.
5486fa9e4066Sahrens 		 */
5487b24ab676SJeff Bonwick 		for (int f = 0; f < ZTEST_FUNCS; f++) {
5488fa9e4066Sahrens 			zi = &zs->zs_info[f];
5489b24ab676SJeff Bonwick 			zi->zi_call_count = 0;
5490fa9e4066Sahrens 			zi->zi_call_time = 0;
5491fa9e4066Sahrens 		}
5492fa9e4066Sahrens 
5493d6e555bdSGeorge Wilson 		/* Set the allocation switch size */
5494d6e555bdSGeorge Wilson 		metaslab_df_alloc_threshold = ztest_random(metaslab_sz / 4) + 1;
5495d6e555bdSGeorge Wilson 
5496fa9e4066Sahrens 		pid = fork();
5497fa9e4066Sahrens 
5498fa9e4066Sahrens 		if (pid == -1)
5499fa9e4066Sahrens 			fatal(1, "fork failed");
5500fa9e4066Sahrens 
5501fa9e4066Sahrens 		if (pid == 0) {	/* child */
5502fa9e4066Sahrens 			struct rlimit rl = { 1024, 1024 };
5503fa9e4066Sahrens 			(void) setrlimit(RLIMIT_NOFILE, &rl);
5504004388ebScasper 			(void) enable_extended_FILE_stdio(-1, -1);
5505b24ab676SJeff Bonwick 			ztest_run(zs);
5506fa9e4066Sahrens 			exit(0);
5507fa9e4066Sahrens 		}
5508fa9e4066Sahrens 
55095ad82045Snd150628 		while (waitpid(pid, &status, 0) != pid)
5510fa9e4066Sahrens 			continue;
5511fa9e4066Sahrens 
5512fa9e4066Sahrens 		if (WIFEXITED(status)) {
5513fa9e4066Sahrens 			if (WEXITSTATUS(status) != 0) {
5514fa9e4066Sahrens 				(void) fprintf(stderr,
5515fa9e4066Sahrens 				    "child exited with code %d\n",
5516fa9e4066Sahrens 				    WEXITSTATUS(status));
5517fa9e4066Sahrens 				exit(2);
5518fa9e4066Sahrens 			}
55195ad82045Snd150628 		} else if (WIFSIGNALED(status)) {
5520fa9e4066Sahrens 			if (WTERMSIG(status) != SIGKILL) {
5521fa9e4066Sahrens 				(void) fprintf(stderr,
5522fa9e4066Sahrens 				    "child died with signal %d\n",
5523fa9e4066Sahrens 				    WTERMSIG(status));
5524fa9e4066Sahrens 				exit(3);
5525fa9e4066Sahrens 			}
5526fa9e4066Sahrens 			kills++;
55275ad82045Snd150628 		} else {
55285ad82045Snd150628 			(void) fprintf(stderr, "something strange happened "
55295ad82045Snd150628 			    "to child\n");
55305ad82045Snd150628 			exit(4);
5531fa9e4066Sahrens 		}
5532fa9e4066Sahrens 
5533fa9e4066Sahrens 		iters++;
5534fa9e4066Sahrens 
5535fa9e4066Sahrens 		if (zopt_verbose >= 1) {
5536fa9e4066Sahrens 			hrtime_t now = gethrtime();
5537fa9e4066Sahrens 
5538b24ab676SJeff Bonwick 			now = MIN(now, zs->zs_proc_stop);
5539b24ab676SJeff Bonwick 			print_time(zs->zs_proc_stop - now, timebuf);
5540fa9e4066Sahrens 			nicenum(zs->zs_space, numbuf);
5541fa9e4066Sahrens 
5542fa9e4066Sahrens 			(void) printf("Pass %3d, %8s, %3llu ENOSPC, "
5543fa9e4066Sahrens 			    "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n",
5544fa9e4066Sahrens 			    iters,
5545fa9e4066Sahrens 			    WIFEXITED(status) ? "Complete" : "SIGKILL",
5546fa9e4066Sahrens 			    (u_longlong_t)zs->zs_enospc_count,
5547fa9e4066Sahrens 			    100.0 * zs->zs_alloc / zs->zs_space,
5548fa9e4066Sahrens 			    numbuf,
5549b24ab676SJeff Bonwick 			    100.0 * (now - zs->zs_proc_start) /
5550fa9e4066Sahrens 			    (zopt_time * NANOSEC), timebuf);
5551fa9e4066Sahrens 		}
5552fa9e4066Sahrens 
5553fa9e4066Sahrens 		if (zopt_verbose >= 2) {
5554fa9e4066Sahrens 			(void) printf("\nWorkload summary:\n\n");
5555fa9e4066Sahrens 			(void) printf("%7s %9s   %s\n",
5556fa9e4066Sahrens 			    "Calls", "Time", "Function");
5557fa9e4066Sahrens 			(void) printf("%7s %9s   %s\n",
5558fa9e4066Sahrens 			    "-----", "----", "--------");
5559b24ab676SJeff Bonwick 			for (int f = 0; f < ZTEST_FUNCS; f++) {
5560fa9e4066Sahrens 				Dl_info dli;
5561fa9e4066Sahrens 
5562fa9e4066Sahrens 				zi = &zs->zs_info[f];
5563fa9e4066Sahrens 				print_time(zi->zi_call_time, timebuf);
5564fa9e4066Sahrens 				(void) dladdr((void *)zi->zi_func, &dli);
5565fa9e4066Sahrens 				(void) printf("%7llu %9s   %s\n",
5566b24ab676SJeff Bonwick 				    (u_longlong_t)zi->zi_call_count, timebuf,
5567fa9e4066Sahrens 				    dli.dli_sname);
5568fa9e4066Sahrens 			}
5569fa9e4066Sahrens 			(void) printf("\n");
5570fa9e4066Sahrens 		}
5571fa9e4066Sahrens 
5572fa9e4066Sahrens 		/*
5573b24ab676SJeff Bonwick 		 * It's possible that we killed a child during a rename test,
5574b24ab676SJeff Bonwick 		 * in which case we'll have a 'ztest_tmp' pool lying around
5575b24ab676SJeff Bonwick 		 * instead of 'ztest'.  Do a blind rename in case this happened.
5576fa9e4066Sahrens 		 */
5577b24ab676SJeff Bonwick 		kernel_init(FREAD);
5578b24ab676SJeff Bonwick 		if (spa_open(zopt_pool, &spa, FTAG) == 0) {
5579b24ab676SJeff Bonwick 			spa_close(spa, FTAG);
5580b24ab676SJeff Bonwick 		} else {
5581b24ab676SJeff Bonwick 			char tmpname[MAXNAMELEN];
5582fa9e4066Sahrens 			kernel_fini();
5583b24ab676SJeff Bonwick 			kernel_init(FREAD | FWRITE);
5584b24ab676SJeff Bonwick 			(void) snprintf(tmpname, sizeof (tmpname), "%s_tmp",
5585b24ab676SJeff Bonwick 			    zopt_pool);
5586b24ab676SJeff Bonwick 			(void) spa_rename(tmpname, zopt_pool);
5587fa9e4066Sahrens 		}
5588b24ab676SJeff Bonwick 		kernel_fini();
5589fa9e4066Sahrens 
5590b24ab676SJeff Bonwick 		ztest_run_zdb(zopt_pool);
5591b24ab676SJeff Bonwick 	}
5592fa9e4066Sahrens 
5593fa9e4066Sahrens 	if (zopt_verbose >= 1) {
5594fa9e4066Sahrens 		(void) printf("%d killed, %d completed, %.0f%% kill rate\n",
5595fa9e4066Sahrens 		    kills, iters - kills, (100.0 * kills) / MAX(1, iters));
5596fa9e4066Sahrens 	}
5597fa9e4066Sahrens 
5598fa9e4066Sahrens 	return (0);
5599fa9e4066Sahrens }
5600