1eda14cbcSMatt Macy /* 2eda14cbcSMatt Macy * CDDL HEADER START 3eda14cbcSMatt Macy * 4eda14cbcSMatt Macy * The contents of this file are subject to the terms of the 5eda14cbcSMatt Macy * Common Development and Distribution License (the "License"). 6eda14cbcSMatt Macy * You may not use this file except in compliance with the License. 7eda14cbcSMatt Macy * 8eda14cbcSMatt Macy * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9271171e0SMartin Matuska * or https://opensource.org/licenses/CDDL-1.0. 10eda14cbcSMatt Macy * See the License for the specific language governing permissions 11eda14cbcSMatt Macy * and limitations under the License. 12eda14cbcSMatt Macy * 13eda14cbcSMatt Macy * When distributing Covered Code, include this CDDL HEADER in each 14eda14cbcSMatt Macy * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15eda14cbcSMatt Macy * If applicable, add the following below this CDDL HEADER, with the 16eda14cbcSMatt Macy * fields enclosed by brackets "[]" replaced with your own identifying 17eda14cbcSMatt Macy * information: Portions Copyright [yyyy] [name of copyright owner] 18eda14cbcSMatt Macy * 19eda14cbcSMatt Macy * CDDL HEADER END 20eda14cbcSMatt Macy */ 21eda14cbcSMatt Macy 22eda14cbcSMatt Macy /* 23eda14cbcSMatt Macy * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 247877fdebSMatt Macy * Copyright (c) 2012, 2020 by Delphix. All rights reserved. 25eda14cbcSMatt Macy * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 26eda14cbcSMatt Macy * Copyright (c) 2013, Joyent, Inc. All rights reserved. 27eda14cbcSMatt Macy * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. 28eda14cbcSMatt Macy * Copyright (c) 2015, STRATO AG, Inc. All rights reserved. 29eda14cbcSMatt Macy * Copyright (c) 2016 Actifio, Inc. All rights reserved. 30eda14cbcSMatt Macy * Copyright 2017 Nexenta Systems, Inc. 31eda14cbcSMatt Macy * Copyright (c) 2017 Open-E, Inc. All Rights Reserved. 32eda14cbcSMatt Macy * Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved. 33eda14cbcSMatt Macy * Copyright (c) 2019, Klara Inc. 34eda14cbcSMatt Macy * Copyright (c) 2019, Allan Jude 35dbd5678dSMartin Matuska * Copyright (c) 2022 Hewlett Packard Enterprise Development LP. 36eda14cbcSMatt Macy */ 37eda14cbcSMatt Macy 38eda14cbcSMatt Macy /* Portions Copyright 2010 Robert Milkowski */ 39eda14cbcSMatt Macy 40eda14cbcSMatt Macy #include <sys/cred.h> 41eda14cbcSMatt Macy #include <sys/zfs_context.h> 42eda14cbcSMatt Macy #include <sys/dmu_objset.h> 43eda14cbcSMatt Macy #include <sys/dsl_dir.h> 44eda14cbcSMatt Macy #include <sys/dsl_dataset.h> 45eda14cbcSMatt Macy #include <sys/dsl_prop.h> 46eda14cbcSMatt Macy #include <sys/dsl_pool.h> 47eda14cbcSMatt Macy #include <sys/dsl_synctask.h> 48eda14cbcSMatt Macy #include <sys/dsl_deleg.h> 49eda14cbcSMatt Macy #include <sys/dnode.h> 50eda14cbcSMatt Macy #include <sys/dbuf.h> 51eda14cbcSMatt Macy #include <sys/zvol.h> 52eda14cbcSMatt Macy #include <sys/dmu_tx.h> 53eda14cbcSMatt Macy #include <sys/zap.h> 54eda14cbcSMatt Macy #include <sys/zil.h> 55eda14cbcSMatt Macy #include <sys/dmu_impl.h> 56eda14cbcSMatt Macy #include <sys/zfs_ioctl.h> 57eda14cbcSMatt Macy #include <sys/sa.h> 58eda14cbcSMatt Macy #include <sys/zfs_onexit.h> 59eda14cbcSMatt Macy #include <sys/dsl_destroy.h> 60eda14cbcSMatt Macy #include <sys/vdev.h> 61eda14cbcSMatt Macy #include <sys/zfeature.h> 62eda14cbcSMatt Macy #include <sys/policy.h> 63eda14cbcSMatt Macy #include <sys/spa_impl.h> 64eda14cbcSMatt Macy #include <sys/dmu_recv.h> 65eda14cbcSMatt Macy #include <sys/zfs_project.h> 66eda14cbcSMatt Macy #include "zfs_namecheck.h" 67dae17134SMartin Matuska #include <sys/vdev_impl.h> 68dae17134SMartin Matuska #include <sys/arc.h> 69eda14cbcSMatt Macy 70eda14cbcSMatt Macy /* 71eda14cbcSMatt Macy * Needed to close a window in dnode_move() that allows the objset to be freed 72eda14cbcSMatt Macy * before it can be safely accessed. 73eda14cbcSMatt Macy */ 74eda14cbcSMatt Macy krwlock_t os_lock; 75eda14cbcSMatt Macy 76eda14cbcSMatt Macy /* 77eda14cbcSMatt Macy * Tunable to overwrite the maximum number of threads for the parallelization 78eda14cbcSMatt Macy * of dmu_objset_find_dp, needed to speed up the import of pools with many 79eda14cbcSMatt Macy * datasets. 80eda14cbcSMatt Macy * Default is 4 times the number of leaf vdevs. 81eda14cbcSMatt Macy */ 82e92ffd9bSMartin Matuska static const int dmu_find_threads = 0; 83eda14cbcSMatt Macy 84eda14cbcSMatt Macy /* 85eda14cbcSMatt Macy * Backfill lower metadnode objects after this many have been freed. 86eda14cbcSMatt Macy * Backfilling negatively impacts object creation rates, so only do it 87eda14cbcSMatt Macy * if there are enough holes to fill. 88eda14cbcSMatt Macy */ 89e92ffd9bSMartin Matuska static const int dmu_rescan_dnode_threshold = 1 << DN_MAX_INDBLKSHIFT; 90eda14cbcSMatt Macy 91e92ffd9bSMartin Matuska static const char *upgrade_tag = "upgrade_tag"; 92eda14cbcSMatt Macy 93eda14cbcSMatt Macy static void dmu_objset_find_dp_cb(void *arg); 94eda14cbcSMatt Macy 95eda14cbcSMatt Macy static void dmu_objset_upgrade(objset_t *os, dmu_objset_upgrade_cb_t cb); 96eda14cbcSMatt Macy static void dmu_objset_upgrade_stop(objset_t *os); 97eda14cbcSMatt Macy 98eda14cbcSMatt Macy void 99eda14cbcSMatt Macy dmu_objset_init(void) 100eda14cbcSMatt Macy { 101eda14cbcSMatt Macy rw_init(&os_lock, NULL, RW_DEFAULT, NULL); 102eda14cbcSMatt Macy } 103eda14cbcSMatt Macy 104eda14cbcSMatt Macy void 105eda14cbcSMatt Macy dmu_objset_fini(void) 106eda14cbcSMatt Macy { 107eda14cbcSMatt Macy rw_destroy(&os_lock); 108eda14cbcSMatt Macy } 109eda14cbcSMatt Macy 110eda14cbcSMatt Macy spa_t * 111eda14cbcSMatt Macy dmu_objset_spa(objset_t *os) 112eda14cbcSMatt Macy { 113eda14cbcSMatt Macy return (os->os_spa); 114eda14cbcSMatt Macy } 115eda14cbcSMatt Macy 116eda14cbcSMatt Macy zilog_t * 117eda14cbcSMatt Macy dmu_objset_zil(objset_t *os) 118eda14cbcSMatt Macy { 119eda14cbcSMatt Macy return (os->os_zil); 120eda14cbcSMatt Macy } 121eda14cbcSMatt Macy 122eda14cbcSMatt Macy dsl_pool_t * 123eda14cbcSMatt Macy dmu_objset_pool(objset_t *os) 124eda14cbcSMatt Macy { 125eda14cbcSMatt Macy dsl_dataset_t *ds; 126eda14cbcSMatt Macy 127eda14cbcSMatt Macy if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir) 128eda14cbcSMatt Macy return (ds->ds_dir->dd_pool); 129eda14cbcSMatt Macy else 130eda14cbcSMatt Macy return (spa_get_dsl(os->os_spa)); 131eda14cbcSMatt Macy } 132eda14cbcSMatt Macy 133eda14cbcSMatt Macy dsl_dataset_t * 134eda14cbcSMatt Macy dmu_objset_ds(objset_t *os) 135eda14cbcSMatt Macy { 136eda14cbcSMatt Macy return (os->os_dsl_dataset); 137eda14cbcSMatt Macy } 138eda14cbcSMatt Macy 139eda14cbcSMatt Macy dmu_objset_type_t 140eda14cbcSMatt Macy dmu_objset_type(objset_t *os) 141eda14cbcSMatt Macy { 142eda14cbcSMatt Macy return (os->os_phys->os_type); 143eda14cbcSMatt Macy } 144eda14cbcSMatt Macy 145eda14cbcSMatt Macy void 146eda14cbcSMatt Macy dmu_objset_name(objset_t *os, char *buf) 147eda14cbcSMatt Macy { 148eda14cbcSMatt Macy dsl_dataset_name(os->os_dsl_dataset, buf); 149eda14cbcSMatt Macy } 150eda14cbcSMatt Macy 151eda14cbcSMatt Macy uint64_t 152eda14cbcSMatt Macy dmu_objset_id(objset_t *os) 153eda14cbcSMatt Macy { 154eda14cbcSMatt Macy dsl_dataset_t *ds = os->os_dsl_dataset; 155eda14cbcSMatt Macy 156eda14cbcSMatt Macy return (ds ? ds->ds_object : 0); 157eda14cbcSMatt Macy } 158eda14cbcSMatt Macy 159eda14cbcSMatt Macy uint64_t 160eda14cbcSMatt Macy dmu_objset_dnodesize(objset_t *os) 161eda14cbcSMatt Macy { 162eda14cbcSMatt Macy return (os->os_dnodesize); 163eda14cbcSMatt Macy } 164eda14cbcSMatt Macy 165eda14cbcSMatt Macy zfs_sync_type_t 166eda14cbcSMatt Macy dmu_objset_syncprop(objset_t *os) 167eda14cbcSMatt Macy { 168eda14cbcSMatt Macy return (os->os_sync); 169eda14cbcSMatt Macy } 170eda14cbcSMatt Macy 171eda14cbcSMatt Macy zfs_logbias_op_t 172eda14cbcSMatt Macy dmu_objset_logbias(objset_t *os) 173eda14cbcSMatt Macy { 174eda14cbcSMatt Macy return (os->os_logbias); 175eda14cbcSMatt Macy } 176eda14cbcSMatt Macy 177eda14cbcSMatt Macy static void 178eda14cbcSMatt Macy checksum_changed_cb(void *arg, uint64_t newval) 179eda14cbcSMatt Macy { 180eda14cbcSMatt Macy objset_t *os = arg; 181eda14cbcSMatt Macy 182eda14cbcSMatt Macy /* 183eda14cbcSMatt Macy * Inheritance should have been done by now. 184eda14cbcSMatt Macy */ 185eda14cbcSMatt Macy ASSERT(newval != ZIO_CHECKSUM_INHERIT); 186eda14cbcSMatt Macy 187eda14cbcSMatt Macy os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE); 188eda14cbcSMatt Macy } 189eda14cbcSMatt Macy 190eda14cbcSMatt Macy static void 191eda14cbcSMatt Macy compression_changed_cb(void *arg, uint64_t newval) 192eda14cbcSMatt Macy { 193eda14cbcSMatt Macy objset_t *os = arg; 194eda14cbcSMatt Macy 195eda14cbcSMatt Macy /* 196eda14cbcSMatt Macy * Inheritance and range checking should have been done by now. 197eda14cbcSMatt Macy */ 198eda14cbcSMatt Macy ASSERT(newval != ZIO_COMPRESS_INHERIT); 199eda14cbcSMatt Macy 200eda14cbcSMatt Macy os->os_compress = zio_compress_select(os->os_spa, 201eda14cbcSMatt Macy ZIO_COMPRESS_ALGO(newval), ZIO_COMPRESS_ON); 202eda14cbcSMatt Macy os->os_complevel = zio_complevel_select(os->os_spa, os->os_compress, 203eda14cbcSMatt Macy ZIO_COMPRESS_LEVEL(newval), ZIO_COMPLEVEL_DEFAULT); 204eda14cbcSMatt Macy } 205eda14cbcSMatt Macy 206eda14cbcSMatt Macy static void 207eda14cbcSMatt Macy copies_changed_cb(void *arg, uint64_t newval) 208eda14cbcSMatt Macy { 209eda14cbcSMatt Macy objset_t *os = arg; 210eda14cbcSMatt Macy 211eda14cbcSMatt Macy /* 212eda14cbcSMatt Macy * Inheritance and range checking should have been done by now. 213eda14cbcSMatt Macy */ 214eda14cbcSMatt Macy ASSERT(newval > 0); 215eda14cbcSMatt Macy ASSERT(newval <= spa_max_replication(os->os_spa)); 216eda14cbcSMatt Macy 217eda14cbcSMatt Macy os->os_copies = newval; 218eda14cbcSMatt Macy } 219eda14cbcSMatt Macy 220eda14cbcSMatt Macy static void 221eda14cbcSMatt Macy dedup_changed_cb(void *arg, uint64_t newval) 222eda14cbcSMatt Macy { 223eda14cbcSMatt Macy objset_t *os = arg; 224eda14cbcSMatt Macy spa_t *spa = os->os_spa; 225eda14cbcSMatt Macy enum zio_checksum checksum; 226eda14cbcSMatt Macy 227eda14cbcSMatt Macy /* 228eda14cbcSMatt Macy * Inheritance should have been done by now. 229eda14cbcSMatt Macy */ 230eda14cbcSMatt Macy ASSERT(newval != ZIO_CHECKSUM_INHERIT); 231eda14cbcSMatt Macy 232eda14cbcSMatt Macy checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF); 233eda14cbcSMatt Macy 234eda14cbcSMatt Macy os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK; 235eda14cbcSMatt Macy os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY); 236eda14cbcSMatt Macy } 237eda14cbcSMatt Macy 238eda14cbcSMatt Macy static void 239eda14cbcSMatt Macy primary_cache_changed_cb(void *arg, uint64_t newval) 240eda14cbcSMatt Macy { 241eda14cbcSMatt Macy objset_t *os = arg; 242eda14cbcSMatt Macy 243eda14cbcSMatt Macy /* 244eda14cbcSMatt Macy * Inheritance and range checking should have been done by now. 245eda14cbcSMatt Macy */ 246eda14cbcSMatt Macy ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 247eda14cbcSMatt Macy newval == ZFS_CACHE_METADATA); 248eda14cbcSMatt Macy 249eda14cbcSMatt Macy os->os_primary_cache = newval; 250eda14cbcSMatt Macy } 251eda14cbcSMatt Macy 252eda14cbcSMatt Macy static void 253eda14cbcSMatt Macy secondary_cache_changed_cb(void *arg, uint64_t newval) 254eda14cbcSMatt Macy { 255eda14cbcSMatt Macy objset_t *os = arg; 256eda14cbcSMatt Macy 257eda14cbcSMatt Macy /* 258eda14cbcSMatt Macy * Inheritance and range checking should have been done by now. 259eda14cbcSMatt Macy */ 260eda14cbcSMatt Macy ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 261eda14cbcSMatt Macy newval == ZFS_CACHE_METADATA); 262eda14cbcSMatt Macy 263eda14cbcSMatt Macy os->os_secondary_cache = newval; 264eda14cbcSMatt Macy } 265eda14cbcSMatt Macy 266eda14cbcSMatt Macy static void 267eda14cbcSMatt Macy sync_changed_cb(void *arg, uint64_t newval) 268eda14cbcSMatt Macy { 269eda14cbcSMatt Macy objset_t *os = arg; 270eda14cbcSMatt Macy 271eda14cbcSMatt Macy /* 272eda14cbcSMatt Macy * Inheritance and range checking should have been done by now. 273eda14cbcSMatt Macy */ 274eda14cbcSMatt Macy ASSERT(newval == ZFS_SYNC_STANDARD || newval == ZFS_SYNC_ALWAYS || 275eda14cbcSMatt Macy newval == ZFS_SYNC_DISABLED); 276eda14cbcSMatt Macy 277eda14cbcSMatt Macy os->os_sync = newval; 278eda14cbcSMatt Macy if (os->os_zil) 279eda14cbcSMatt Macy zil_set_sync(os->os_zil, newval); 280eda14cbcSMatt Macy } 281eda14cbcSMatt Macy 282eda14cbcSMatt Macy static void 283eda14cbcSMatt Macy redundant_metadata_changed_cb(void *arg, uint64_t newval) 284eda14cbcSMatt Macy { 285eda14cbcSMatt Macy objset_t *os = arg; 286eda14cbcSMatt Macy 287eda14cbcSMatt Macy /* 288eda14cbcSMatt Macy * Inheritance and range checking should have been done by now. 289eda14cbcSMatt Macy */ 290eda14cbcSMatt Macy ASSERT(newval == ZFS_REDUNDANT_METADATA_ALL || 291dbd5678dSMartin Matuska newval == ZFS_REDUNDANT_METADATA_MOST || 292dbd5678dSMartin Matuska newval == ZFS_REDUNDANT_METADATA_SOME || 293dbd5678dSMartin Matuska newval == ZFS_REDUNDANT_METADATA_NONE); 294eda14cbcSMatt Macy 295eda14cbcSMatt Macy os->os_redundant_metadata = newval; 296eda14cbcSMatt Macy } 297eda14cbcSMatt Macy 298eda14cbcSMatt Macy static void 299eda14cbcSMatt Macy dnodesize_changed_cb(void *arg, uint64_t newval) 300eda14cbcSMatt Macy { 301eda14cbcSMatt Macy objset_t *os = arg; 302eda14cbcSMatt Macy 303eda14cbcSMatt Macy switch (newval) { 304eda14cbcSMatt Macy case ZFS_DNSIZE_LEGACY: 305eda14cbcSMatt Macy os->os_dnodesize = DNODE_MIN_SIZE; 306eda14cbcSMatt Macy break; 307eda14cbcSMatt Macy case ZFS_DNSIZE_AUTO: 308eda14cbcSMatt Macy /* 309eda14cbcSMatt Macy * Choose a dnode size that will work well for most 310eda14cbcSMatt Macy * workloads if the user specified "auto". Future code 311eda14cbcSMatt Macy * improvements could dynamically select a dnode size 312eda14cbcSMatt Macy * based on observed workload patterns. 313eda14cbcSMatt Macy */ 314eda14cbcSMatt Macy os->os_dnodesize = DNODE_MIN_SIZE * 2; 315eda14cbcSMatt Macy break; 316eda14cbcSMatt Macy case ZFS_DNSIZE_1K: 317eda14cbcSMatt Macy case ZFS_DNSIZE_2K: 318eda14cbcSMatt Macy case ZFS_DNSIZE_4K: 319eda14cbcSMatt Macy case ZFS_DNSIZE_8K: 320eda14cbcSMatt Macy case ZFS_DNSIZE_16K: 321eda14cbcSMatt Macy os->os_dnodesize = newval; 322eda14cbcSMatt Macy break; 323eda14cbcSMatt Macy } 324eda14cbcSMatt Macy } 325eda14cbcSMatt Macy 326eda14cbcSMatt Macy static void 327eda14cbcSMatt Macy smallblk_changed_cb(void *arg, uint64_t newval) 328eda14cbcSMatt Macy { 329eda14cbcSMatt Macy objset_t *os = arg; 330eda14cbcSMatt Macy 331eda14cbcSMatt Macy /* 332eda14cbcSMatt Macy * Inheritance and range checking should have been done by now. 333eda14cbcSMatt Macy */ 334184c1b94SMartin Matuska ASSERT(newval <= SPA_MAXBLOCKSIZE); 335eda14cbcSMatt Macy ASSERT(ISP2(newval)); 336eda14cbcSMatt Macy 337eda14cbcSMatt Macy os->os_zpl_special_smallblock = newval; 338eda14cbcSMatt Macy } 339eda14cbcSMatt Macy 340eda14cbcSMatt Macy static void 341eda14cbcSMatt Macy logbias_changed_cb(void *arg, uint64_t newval) 342eda14cbcSMatt Macy { 343eda14cbcSMatt Macy objset_t *os = arg; 344eda14cbcSMatt Macy 345eda14cbcSMatt Macy ASSERT(newval == ZFS_LOGBIAS_LATENCY || 346eda14cbcSMatt Macy newval == ZFS_LOGBIAS_THROUGHPUT); 347eda14cbcSMatt Macy os->os_logbias = newval; 348eda14cbcSMatt Macy if (os->os_zil) 349eda14cbcSMatt Macy zil_set_logbias(os->os_zil, newval); 350eda14cbcSMatt Macy } 351eda14cbcSMatt Macy 352eda14cbcSMatt Macy static void 353eda14cbcSMatt Macy recordsize_changed_cb(void *arg, uint64_t newval) 354eda14cbcSMatt Macy { 355eda14cbcSMatt Macy objset_t *os = arg; 356eda14cbcSMatt Macy 357eda14cbcSMatt Macy os->os_recordsize = newval; 358eda14cbcSMatt Macy } 359eda14cbcSMatt Macy 360eda14cbcSMatt Macy void 361eda14cbcSMatt Macy dmu_objset_byteswap(void *buf, size_t size) 362eda14cbcSMatt Macy { 363eda14cbcSMatt Macy objset_phys_t *osp = buf; 364eda14cbcSMatt Macy 365eda14cbcSMatt Macy ASSERT(size == OBJSET_PHYS_SIZE_V1 || size == OBJSET_PHYS_SIZE_V2 || 366eda14cbcSMatt Macy size == sizeof (objset_phys_t)); 367eda14cbcSMatt Macy dnode_byteswap(&osp->os_meta_dnode); 368eda14cbcSMatt Macy byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t)); 369eda14cbcSMatt Macy osp->os_type = BSWAP_64(osp->os_type); 370eda14cbcSMatt Macy osp->os_flags = BSWAP_64(osp->os_flags); 371eda14cbcSMatt Macy if (size >= OBJSET_PHYS_SIZE_V2) { 372eda14cbcSMatt Macy dnode_byteswap(&osp->os_userused_dnode); 373eda14cbcSMatt Macy dnode_byteswap(&osp->os_groupused_dnode); 374eda14cbcSMatt Macy if (size >= sizeof (objset_phys_t)) 375eda14cbcSMatt Macy dnode_byteswap(&osp->os_projectused_dnode); 376eda14cbcSMatt Macy } 377eda14cbcSMatt Macy } 378eda14cbcSMatt Macy 379eda14cbcSMatt Macy /* 380eda14cbcSMatt Macy * The hash is a CRC-based hash of the objset_t pointer and the object number. 381eda14cbcSMatt Macy */ 382eda14cbcSMatt Macy static uint64_t 383eda14cbcSMatt Macy dnode_hash(const objset_t *os, uint64_t obj) 384eda14cbcSMatt Macy { 385eda14cbcSMatt Macy uintptr_t osv = (uintptr_t)os; 386eda14cbcSMatt Macy uint64_t crc = -1ULL; 387eda14cbcSMatt Macy 388eda14cbcSMatt Macy ASSERT(zfs_crc64_table[128] == ZFS_CRC64_POLY); 389eda14cbcSMatt Macy /* 390eda14cbcSMatt Macy * The low 6 bits of the pointer don't have much entropy, because 391eda14cbcSMatt Macy * the objset_t is larger than 2^6 bytes long. 392eda14cbcSMatt Macy */ 393eda14cbcSMatt Macy crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (osv >> 6)) & 0xFF]; 394eda14cbcSMatt Macy crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 0)) & 0xFF]; 395eda14cbcSMatt Macy crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 8)) & 0xFF]; 396eda14cbcSMatt Macy crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 16)) & 0xFF]; 397eda14cbcSMatt Macy 398eda14cbcSMatt Macy crc ^= (osv>>14) ^ (obj>>24); 399eda14cbcSMatt Macy 400eda14cbcSMatt Macy return (crc); 401eda14cbcSMatt Macy } 402eda14cbcSMatt Macy 403eda14cbcSMatt Macy static unsigned int 404eda14cbcSMatt Macy dnode_multilist_index_func(multilist_t *ml, void *obj) 405eda14cbcSMatt Macy { 406eda14cbcSMatt Macy dnode_t *dn = obj; 4072617128aSMartin Matuska 4082617128aSMartin Matuska /* 4092617128aSMartin Matuska * The low order bits of the hash value are thought to be 4102617128aSMartin Matuska * distributed evenly. Otherwise, in the case that the multilist 4112617128aSMartin Matuska * has a power of two number of sublists, each sublists' usage 4122617128aSMartin Matuska * would not be evenly distributed. In this context full 64bit 4132617128aSMartin Matuska * division would be a waste of time, so limit it to 32 bits. 4142617128aSMartin Matuska */ 4152617128aSMartin Matuska return ((unsigned int)dnode_hash(dn->dn_objset, dn->dn_object) % 416eda14cbcSMatt Macy multilist_get_num_sublists(ml)); 417eda14cbcSMatt Macy } 418eda14cbcSMatt Macy 419dae17134SMartin Matuska static inline boolean_t 420dae17134SMartin Matuska dmu_os_is_l2cacheable(objset_t *os) 421dae17134SMartin Matuska { 422*2a58b312SMartin Matuska if (os->os_secondary_cache == ZFS_CACHE_ALL || 423*2a58b312SMartin Matuska os->os_secondary_cache == ZFS_CACHE_METADATA) { 424*2a58b312SMartin Matuska if (l2arc_exclude_special == 0) 425*2a58b312SMartin Matuska return (B_TRUE); 426dae17134SMartin Matuska 427*2a58b312SMartin Matuska blkptr_t *bp = os->os_rootbp; 428*2a58b312SMartin Matuska if (bp == NULL || BP_IS_HOLE(bp)) 429*2a58b312SMartin Matuska return (B_FALSE); 430dae17134SMartin Matuska uint64_t vdev = DVA_GET_VDEV(bp->blk_dva); 431dae17134SMartin Matuska vdev_t *rvd = os->os_spa->spa_root_vdev; 432*2a58b312SMartin Matuska vdev_t *vd = NULL; 433dae17134SMartin Matuska 434dae17134SMartin Matuska if (vdev < rvd->vdev_children) 435dae17134SMartin Matuska vd = rvd->vdev_child[vdev]; 436dae17134SMartin Matuska 437dae17134SMartin Matuska if (vd == NULL) 438dae17134SMartin Matuska return (B_TRUE); 439dae17134SMartin Matuska 440*2a58b312SMartin Matuska if (vd->vdev_alloc_bias != VDEV_BIAS_SPECIAL && 441*2a58b312SMartin Matuska vd->vdev_alloc_bias != VDEV_BIAS_DEDUP) 442dae17134SMartin Matuska return (B_TRUE); 443dae17134SMartin Matuska } 444dae17134SMartin Matuska return (B_FALSE); 445dae17134SMartin Matuska } 446dae17134SMartin Matuska 447eda14cbcSMatt Macy /* 448eda14cbcSMatt Macy * Instantiates the objset_t in-memory structure corresponding to the 449eda14cbcSMatt Macy * objset_phys_t that's pointed to by the specified blkptr_t. 450eda14cbcSMatt Macy */ 451eda14cbcSMatt Macy int 452eda14cbcSMatt Macy dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 453eda14cbcSMatt Macy objset_t **osp) 454eda14cbcSMatt Macy { 455eda14cbcSMatt Macy objset_t *os; 456eda14cbcSMatt Macy int i, err; 457eda14cbcSMatt Macy 458eda14cbcSMatt Macy ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock)); 459eda14cbcSMatt Macy ASSERT(!BP_IS_REDACTED(bp)); 460eda14cbcSMatt Macy 461eda14cbcSMatt Macy /* 462eda14cbcSMatt Macy * We need the pool config lock to get properties. 463eda14cbcSMatt Macy */ 464eda14cbcSMatt Macy ASSERT(ds == NULL || dsl_pool_config_held(ds->ds_dir->dd_pool)); 465eda14cbcSMatt Macy 466eda14cbcSMatt Macy /* 467eda14cbcSMatt Macy * The $ORIGIN dataset (if it exists) doesn't have an associated 468eda14cbcSMatt Macy * objset, so there's no reason to open it. The $ORIGIN dataset 469eda14cbcSMatt Macy * will not exist on pools older than SPA_VERSION_ORIGIN. 470eda14cbcSMatt Macy */ 471eda14cbcSMatt Macy if (ds != NULL && spa_get_dsl(spa) != NULL && 472eda14cbcSMatt Macy spa_get_dsl(spa)->dp_origin_snap != NULL) { 473eda14cbcSMatt Macy ASSERT3P(ds->ds_dir, !=, 474eda14cbcSMatt Macy spa_get_dsl(spa)->dp_origin_snap->ds_dir); 475eda14cbcSMatt Macy } 476eda14cbcSMatt Macy 477eda14cbcSMatt Macy os = kmem_zalloc(sizeof (objset_t), KM_SLEEP); 478eda14cbcSMatt Macy os->os_dsl_dataset = ds; 479eda14cbcSMatt Macy os->os_spa = spa; 480eda14cbcSMatt Macy os->os_rootbp = bp; 481eda14cbcSMatt Macy if (!BP_IS_HOLE(os->os_rootbp)) { 482eda14cbcSMatt Macy arc_flags_t aflags = ARC_FLAG_WAIT; 483eda14cbcSMatt Macy zbookmark_phys_t zb; 484eda14cbcSMatt Macy int size; 485dbd5678dSMartin Matuska zio_flag_t zio_flags = ZIO_FLAG_CANFAIL; 486eda14cbcSMatt Macy SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET, 487eda14cbcSMatt Macy ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 488eda14cbcSMatt Macy 489dae17134SMartin Matuska if (dmu_os_is_l2cacheable(os)) 490eda14cbcSMatt Macy aflags |= ARC_FLAG_L2CACHE; 491eda14cbcSMatt Macy 492eda14cbcSMatt Macy if (ds != NULL && ds->ds_dir->dd_crypto_obj != 0) { 493eda14cbcSMatt Macy ASSERT3U(BP_GET_COMPRESS(bp), ==, ZIO_COMPRESS_OFF); 494eda14cbcSMatt Macy ASSERT(BP_IS_AUTHENTICATED(bp)); 495eda14cbcSMatt Macy zio_flags |= ZIO_FLAG_RAW; 496eda14cbcSMatt Macy } 497eda14cbcSMatt Macy 498eda14cbcSMatt Macy dprintf_bp(os->os_rootbp, "reading %s", ""); 499eda14cbcSMatt Macy err = arc_read(NULL, spa, os->os_rootbp, 500eda14cbcSMatt Macy arc_getbuf_func, &os->os_phys_buf, 501eda14cbcSMatt Macy ZIO_PRIORITY_SYNC_READ, zio_flags, &aflags, &zb); 502eda14cbcSMatt Macy if (err != 0) { 503eda14cbcSMatt Macy kmem_free(os, sizeof (objset_t)); 504eda14cbcSMatt Macy /* convert checksum errors into IO errors */ 505eda14cbcSMatt Macy if (err == ECKSUM) 506eda14cbcSMatt Macy err = SET_ERROR(EIO); 507eda14cbcSMatt Macy return (err); 508eda14cbcSMatt Macy } 509eda14cbcSMatt Macy 510eda14cbcSMatt Macy if (spa_version(spa) < SPA_VERSION_USERSPACE) 511eda14cbcSMatt Macy size = OBJSET_PHYS_SIZE_V1; 512eda14cbcSMatt Macy else if (!spa_feature_is_enabled(spa, 513eda14cbcSMatt Macy SPA_FEATURE_PROJECT_QUOTA)) 514eda14cbcSMatt Macy size = OBJSET_PHYS_SIZE_V2; 515eda14cbcSMatt Macy else 516eda14cbcSMatt Macy size = sizeof (objset_phys_t); 517eda14cbcSMatt Macy 518eda14cbcSMatt Macy /* Increase the blocksize if we are permitted. */ 519eda14cbcSMatt Macy if (arc_buf_size(os->os_phys_buf) < size) { 520eda14cbcSMatt Macy arc_buf_t *buf = arc_alloc_buf(spa, &os->os_phys_buf, 521eda14cbcSMatt Macy ARC_BUFC_METADATA, size); 522da5137abSMartin Matuska memset(buf->b_data, 0, size); 523da5137abSMartin Matuska memcpy(buf->b_data, os->os_phys_buf->b_data, 524eda14cbcSMatt Macy arc_buf_size(os->os_phys_buf)); 525eda14cbcSMatt Macy arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf); 526eda14cbcSMatt Macy os->os_phys_buf = buf; 527eda14cbcSMatt Macy } 528eda14cbcSMatt Macy 529eda14cbcSMatt Macy os->os_phys = os->os_phys_buf->b_data; 530eda14cbcSMatt Macy os->os_flags = os->os_phys->os_flags; 531eda14cbcSMatt Macy } else { 532eda14cbcSMatt Macy int size = spa_version(spa) >= SPA_VERSION_USERSPACE ? 533eda14cbcSMatt Macy sizeof (objset_phys_t) : OBJSET_PHYS_SIZE_V1; 534eda14cbcSMatt Macy os->os_phys_buf = arc_alloc_buf(spa, &os->os_phys_buf, 535eda14cbcSMatt Macy ARC_BUFC_METADATA, size); 536eda14cbcSMatt Macy os->os_phys = os->os_phys_buf->b_data; 537da5137abSMartin Matuska memset(os->os_phys, 0, size); 538eda14cbcSMatt Macy } 539eda14cbcSMatt Macy /* 540eda14cbcSMatt Macy * These properties will be filled in by the logic in zfs_get_zplprop() 541eda14cbcSMatt Macy * when they are queried for the first time. 542eda14cbcSMatt Macy */ 543eda14cbcSMatt Macy os->os_version = OBJSET_PROP_UNINITIALIZED; 544eda14cbcSMatt Macy os->os_normalization = OBJSET_PROP_UNINITIALIZED; 545eda14cbcSMatt Macy os->os_utf8only = OBJSET_PROP_UNINITIALIZED; 546eda14cbcSMatt Macy os->os_casesensitivity = OBJSET_PROP_UNINITIALIZED; 547eda14cbcSMatt Macy 548eda14cbcSMatt Macy /* 549eda14cbcSMatt Macy * Note: the changed_cb will be called once before the register 550eda14cbcSMatt Macy * func returns, thus changing the checksum/compression from the 551eda14cbcSMatt Macy * default (fletcher2/off). Snapshots don't need to know about 552eda14cbcSMatt Macy * checksum/compression/copies. 553eda14cbcSMatt Macy */ 554eda14cbcSMatt Macy if (ds != NULL) { 555eda14cbcSMatt Macy os->os_encrypted = (ds->ds_dir->dd_crypto_obj != 0); 556eda14cbcSMatt Macy 557eda14cbcSMatt Macy err = dsl_prop_register(ds, 558eda14cbcSMatt Macy zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE), 559eda14cbcSMatt Macy primary_cache_changed_cb, os); 560eda14cbcSMatt Macy if (err == 0) { 561eda14cbcSMatt Macy err = dsl_prop_register(ds, 562eda14cbcSMatt Macy zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE), 563eda14cbcSMatt Macy secondary_cache_changed_cb, os); 564eda14cbcSMatt Macy } 565eda14cbcSMatt Macy if (!ds->ds_is_snapshot) { 566eda14cbcSMatt Macy if (err == 0) { 567eda14cbcSMatt Macy err = dsl_prop_register(ds, 568eda14cbcSMatt Macy zfs_prop_to_name(ZFS_PROP_CHECKSUM), 569eda14cbcSMatt Macy checksum_changed_cb, os); 570eda14cbcSMatt Macy } 571eda14cbcSMatt Macy if (err == 0) { 572eda14cbcSMatt Macy err = dsl_prop_register(ds, 573eda14cbcSMatt Macy zfs_prop_to_name(ZFS_PROP_COMPRESSION), 574eda14cbcSMatt Macy compression_changed_cb, os); 575eda14cbcSMatt Macy } 576eda14cbcSMatt Macy if (err == 0) { 577eda14cbcSMatt Macy err = dsl_prop_register(ds, 578eda14cbcSMatt Macy zfs_prop_to_name(ZFS_PROP_COPIES), 579eda14cbcSMatt Macy copies_changed_cb, os); 580eda14cbcSMatt Macy } 581eda14cbcSMatt Macy if (err == 0) { 582eda14cbcSMatt Macy err = dsl_prop_register(ds, 583eda14cbcSMatt Macy zfs_prop_to_name(ZFS_PROP_DEDUP), 584eda14cbcSMatt Macy dedup_changed_cb, os); 585eda14cbcSMatt Macy } 586eda14cbcSMatt Macy if (err == 0) { 587eda14cbcSMatt Macy err = dsl_prop_register(ds, 588eda14cbcSMatt Macy zfs_prop_to_name(ZFS_PROP_LOGBIAS), 589eda14cbcSMatt Macy logbias_changed_cb, os); 590eda14cbcSMatt Macy } 591eda14cbcSMatt Macy if (err == 0) { 592eda14cbcSMatt Macy err = dsl_prop_register(ds, 593eda14cbcSMatt Macy zfs_prop_to_name(ZFS_PROP_SYNC), 594eda14cbcSMatt Macy sync_changed_cb, os); 595eda14cbcSMatt Macy } 596eda14cbcSMatt Macy if (err == 0) { 597eda14cbcSMatt Macy err = dsl_prop_register(ds, 598eda14cbcSMatt Macy zfs_prop_to_name( 599eda14cbcSMatt Macy ZFS_PROP_REDUNDANT_METADATA), 600eda14cbcSMatt Macy redundant_metadata_changed_cb, os); 601eda14cbcSMatt Macy } 602eda14cbcSMatt Macy if (err == 0) { 603eda14cbcSMatt Macy err = dsl_prop_register(ds, 604eda14cbcSMatt Macy zfs_prop_to_name(ZFS_PROP_RECORDSIZE), 605eda14cbcSMatt Macy recordsize_changed_cb, os); 606eda14cbcSMatt Macy } 607eda14cbcSMatt Macy if (err == 0) { 608eda14cbcSMatt Macy err = dsl_prop_register(ds, 609eda14cbcSMatt Macy zfs_prop_to_name(ZFS_PROP_DNODESIZE), 610eda14cbcSMatt Macy dnodesize_changed_cb, os); 611eda14cbcSMatt Macy } 612eda14cbcSMatt Macy if (err == 0) { 613eda14cbcSMatt Macy err = dsl_prop_register(ds, 614eda14cbcSMatt Macy zfs_prop_to_name( 615eda14cbcSMatt Macy ZFS_PROP_SPECIAL_SMALL_BLOCKS), 616eda14cbcSMatt Macy smallblk_changed_cb, os); 617eda14cbcSMatt Macy } 618eda14cbcSMatt Macy } 619eda14cbcSMatt Macy if (err != 0) { 620eda14cbcSMatt Macy arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf); 621eda14cbcSMatt Macy kmem_free(os, sizeof (objset_t)); 622eda14cbcSMatt Macy return (err); 623eda14cbcSMatt Macy } 624eda14cbcSMatt Macy } else { 625eda14cbcSMatt Macy /* It's the meta-objset. */ 626eda14cbcSMatt Macy os->os_checksum = ZIO_CHECKSUM_FLETCHER_4; 627eda14cbcSMatt Macy os->os_compress = ZIO_COMPRESS_ON; 628eda14cbcSMatt Macy os->os_complevel = ZIO_COMPLEVEL_DEFAULT; 629eda14cbcSMatt Macy os->os_encrypted = B_FALSE; 630eda14cbcSMatt Macy os->os_copies = spa_max_replication(spa); 631eda14cbcSMatt Macy os->os_dedup_checksum = ZIO_CHECKSUM_OFF; 632eda14cbcSMatt Macy os->os_dedup_verify = B_FALSE; 633eda14cbcSMatt Macy os->os_logbias = ZFS_LOGBIAS_LATENCY; 634eda14cbcSMatt Macy os->os_sync = ZFS_SYNC_STANDARD; 635eda14cbcSMatt Macy os->os_primary_cache = ZFS_CACHE_ALL; 636eda14cbcSMatt Macy os->os_secondary_cache = ZFS_CACHE_ALL; 637eda14cbcSMatt Macy os->os_dnodesize = DNODE_MIN_SIZE; 638eda14cbcSMatt Macy } 639eda14cbcSMatt Macy 640eda14cbcSMatt Macy if (ds == NULL || !ds->ds_is_snapshot) 641eda14cbcSMatt Macy os->os_zil_header = os->os_phys->os_zil_header; 642eda14cbcSMatt Macy os->os_zil = zil_alloc(os, &os->os_zil_header); 643eda14cbcSMatt Macy 644eda14cbcSMatt Macy for (i = 0; i < TXG_SIZE; i++) { 6453ff01b23SMartin Matuska multilist_create(&os->os_dirty_dnodes[i], sizeof (dnode_t), 646eda14cbcSMatt Macy offsetof(dnode_t, dn_dirty_link[i]), 647eda14cbcSMatt Macy dnode_multilist_index_func); 648eda14cbcSMatt Macy } 649eda14cbcSMatt Macy list_create(&os->os_dnodes, sizeof (dnode_t), 650eda14cbcSMatt Macy offsetof(dnode_t, dn_link)); 651eda14cbcSMatt Macy list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t), 652eda14cbcSMatt Macy offsetof(dmu_buf_impl_t, db_link)); 653eda14cbcSMatt Macy 654eda14cbcSMatt Macy list_link_init(&os->os_evicting_node); 655eda14cbcSMatt Macy 656eda14cbcSMatt Macy mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL); 657eda14cbcSMatt Macy mutex_init(&os->os_userused_lock, NULL, MUTEX_DEFAULT, NULL); 658eda14cbcSMatt Macy mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL); 659eda14cbcSMatt Macy mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL); 660eda14cbcSMatt Macy os->os_obj_next_percpu_len = boot_ncpus; 661eda14cbcSMatt Macy os->os_obj_next_percpu = kmem_zalloc(os->os_obj_next_percpu_len * 662eda14cbcSMatt Macy sizeof (os->os_obj_next_percpu[0]), KM_SLEEP); 663eda14cbcSMatt Macy 664eda14cbcSMatt Macy dnode_special_open(os, &os->os_phys->os_meta_dnode, 665eda14cbcSMatt Macy DMU_META_DNODE_OBJECT, &os->os_meta_dnode); 666eda14cbcSMatt Macy if (OBJSET_BUF_HAS_USERUSED(os->os_phys_buf)) { 667eda14cbcSMatt Macy dnode_special_open(os, &os->os_phys->os_userused_dnode, 668eda14cbcSMatt Macy DMU_USERUSED_OBJECT, &os->os_userused_dnode); 669eda14cbcSMatt Macy dnode_special_open(os, &os->os_phys->os_groupused_dnode, 670eda14cbcSMatt Macy DMU_GROUPUSED_OBJECT, &os->os_groupused_dnode); 671eda14cbcSMatt Macy if (OBJSET_BUF_HAS_PROJECTUSED(os->os_phys_buf)) 672eda14cbcSMatt Macy dnode_special_open(os, 673eda14cbcSMatt Macy &os->os_phys->os_projectused_dnode, 674eda14cbcSMatt Macy DMU_PROJECTUSED_OBJECT, &os->os_projectused_dnode); 675eda14cbcSMatt Macy } 676eda14cbcSMatt Macy 677eda14cbcSMatt Macy mutex_init(&os->os_upgrade_lock, NULL, MUTEX_DEFAULT, NULL); 678eda14cbcSMatt Macy 679eda14cbcSMatt Macy *osp = os; 680eda14cbcSMatt Macy return (0); 681eda14cbcSMatt Macy } 682eda14cbcSMatt Macy 683eda14cbcSMatt Macy int 684eda14cbcSMatt Macy dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp) 685eda14cbcSMatt Macy { 686eda14cbcSMatt Macy int err = 0; 687eda14cbcSMatt Macy 688eda14cbcSMatt Macy /* 689eda14cbcSMatt Macy * We need the pool_config lock to manipulate the dsl_dataset_t. 690eda14cbcSMatt Macy * Even if the dataset is long-held, we need the pool_config lock 691eda14cbcSMatt Macy * to open the objset, as it needs to get properties. 692eda14cbcSMatt Macy */ 693eda14cbcSMatt Macy ASSERT(dsl_pool_config_held(ds->ds_dir->dd_pool)); 694eda14cbcSMatt Macy 695eda14cbcSMatt Macy mutex_enter(&ds->ds_opening_lock); 696eda14cbcSMatt Macy if (ds->ds_objset == NULL) { 697eda14cbcSMatt Macy objset_t *os; 698eda14cbcSMatt Macy rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG); 699eda14cbcSMatt Macy err = dmu_objset_open_impl(dsl_dataset_get_spa(ds), 700eda14cbcSMatt Macy ds, dsl_dataset_get_blkptr(ds), &os); 701eda14cbcSMatt Macy rrw_exit(&ds->ds_bp_rwlock, FTAG); 702eda14cbcSMatt Macy 703eda14cbcSMatt Macy if (err == 0) { 704eda14cbcSMatt Macy mutex_enter(&ds->ds_lock); 705eda14cbcSMatt Macy ASSERT(ds->ds_objset == NULL); 706eda14cbcSMatt Macy ds->ds_objset = os; 707eda14cbcSMatt Macy mutex_exit(&ds->ds_lock); 708eda14cbcSMatt Macy } 709eda14cbcSMatt Macy } 710eda14cbcSMatt Macy *osp = ds->ds_objset; 711eda14cbcSMatt Macy mutex_exit(&ds->ds_opening_lock); 712eda14cbcSMatt Macy return (err); 713eda14cbcSMatt Macy } 714eda14cbcSMatt Macy 715eda14cbcSMatt Macy /* 716eda14cbcSMatt Macy * Holds the pool while the objset is held. Therefore only one objset 717eda14cbcSMatt Macy * can be held at a time. 718eda14cbcSMatt Macy */ 719eda14cbcSMatt Macy int 720a0b956f5SMartin Matuska dmu_objset_hold_flags(const char *name, boolean_t decrypt, const void *tag, 721eda14cbcSMatt Macy objset_t **osp) 722eda14cbcSMatt Macy { 723eda14cbcSMatt Macy dsl_pool_t *dp; 724eda14cbcSMatt Macy dsl_dataset_t *ds; 725eda14cbcSMatt Macy int err; 7267877fdebSMatt Macy ds_hold_flags_t flags; 727eda14cbcSMatt Macy 7287877fdebSMatt Macy flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; 729eda14cbcSMatt Macy err = dsl_pool_hold(name, tag, &dp); 730eda14cbcSMatt Macy if (err != 0) 731eda14cbcSMatt Macy return (err); 732eda14cbcSMatt Macy err = dsl_dataset_hold_flags(dp, name, flags, tag, &ds); 733eda14cbcSMatt Macy if (err != 0) { 734eda14cbcSMatt Macy dsl_pool_rele(dp, tag); 735eda14cbcSMatt Macy return (err); 736eda14cbcSMatt Macy } 737eda14cbcSMatt Macy 738eda14cbcSMatt Macy err = dmu_objset_from_ds(ds, osp); 739eda14cbcSMatt Macy if (err != 0) { 740eda14cbcSMatt Macy dsl_dataset_rele(ds, tag); 741eda14cbcSMatt Macy dsl_pool_rele(dp, tag); 742eda14cbcSMatt Macy } 743eda14cbcSMatt Macy 744eda14cbcSMatt Macy return (err); 745eda14cbcSMatt Macy } 746eda14cbcSMatt Macy 747eda14cbcSMatt Macy int 748a0b956f5SMartin Matuska dmu_objset_hold(const char *name, const void *tag, objset_t **osp) 749eda14cbcSMatt Macy { 750eda14cbcSMatt Macy return (dmu_objset_hold_flags(name, B_FALSE, tag, osp)); 751eda14cbcSMatt Macy } 752eda14cbcSMatt Macy 753eda14cbcSMatt Macy static int 754eda14cbcSMatt Macy dmu_objset_own_impl(dsl_dataset_t *ds, dmu_objset_type_t type, 755a0b956f5SMartin Matuska boolean_t readonly, boolean_t decrypt, const void *tag, objset_t **osp) 756eda14cbcSMatt Macy { 757e92ffd9bSMartin Matuska (void) tag; 758eda14cbcSMatt Macy 759e92ffd9bSMartin Matuska int err = dmu_objset_from_ds(ds, osp); 760eda14cbcSMatt Macy if (err != 0) { 761eda14cbcSMatt Macy return (err); 762eda14cbcSMatt Macy } else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) { 763eda14cbcSMatt Macy return (SET_ERROR(EINVAL)); 764eda14cbcSMatt Macy } else if (!readonly && dsl_dataset_is_snapshot(ds)) { 765eda14cbcSMatt Macy return (SET_ERROR(EROFS)); 766eda14cbcSMatt Macy } else if (!readonly && decrypt && 767eda14cbcSMatt Macy dsl_dir_incompatible_encryption_version(ds->ds_dir)) { 768eda14cbcSMatt Macy return (SET_ERROR(EROFS)); 769eda14cbcSMatt Macy } 770eda14cbcSMatt Macy 771eda14cbcSMatt Macy /* if we are decrypting, we can now check MACs in os->os_phys_buf */ 772eda14cbcSMatt Macy if (decrypt && arc_is_unauthenticated((*osp)->os_phys_buf)) { 773eda14cbcSMatt Macy zbookmark_phys_t zb; 774eda14cbcSMatt Macy 775eda14cbcSMatt Macy SET_BOOKMARK(&zb, ds->ds_object, ZB_ROOT_OBJECT, 776eda14cbcSMatt Macy ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 777eda14cbcSMatt Macy err = arc_untransform((*osp)->os_phys_buf, (*osp)->os_spa, 778eda14cbcSMatt Macy &zb, B_FALSE); 779eda14cbcSMatt Macy if (err != 0) 780eda14cbcSMatt Macy return (err); 781eda14cbcSMatt Macy 782eda14cbcSMatt Macy ASSERT0(arc_is_unauthenticated((*osp)->os_phys_buf)); 783eda14cbcSMatt Macy } 784eda14cbcSMatt Macy 785eda14cbcSMatt Macy return (0); 786eda14cbcSMatt Macy } 787eda14cbcSMatt Macy 788eda14cbcSMatt Macy /* 789eda14cbcSMatt Macy * dsl_pool must not be held when this is called. 790eda14cbcSMatt Macy * Upon successful return, there will be a longhold on the dataset, 791eda14cbcSMatt Macy * and the dsl_pool will not be held. 792eda14cbcSMatt Macy */ 793eda14cbcSMatt Macy int 794eda14cbcSMatt Macy dmu_objset_own(const char *name, dmu_objset_type_t type, 795a0b956f5SMartin Matuska boolean_t readonly, boolean_t decrypt, const void *tag, objset_t **osp) 796eda14cbcSMatt Macy { 797eda14cbcSMatt Macy dsl_pool_t *dp; 798eda14cbcSMatt Macy dsl_dataset_t *ds; 799eda14cbcSMatt Macy int err; 8007877fdebSMatt Macy ds_hold_flags_t flags; 801eda14cbcSMatt Macy 8027877fdebSMatt Macy flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; 803eda14cbcSMatt Macy err = dsl_pool_hold(name, FTAG, &dp); 804eda14cbcSMatt Macy if (err != 0) 805eda14cbcSMatt Macy return (err); 806eda14cbcSMatt Macy err = dsl_dataset_own(dp, name, flags, tag, &ds); 807eda14cbcSMatt Macy if (err != 0) { 808eda14cbcSMatt Macy dsl_pool_rele(dp, FTAG); 809eda14cbcSMatt Macy return (err); 810eda14cbcSMatt Macy } 811eda14cbcSMatt Macy err = dmu_objset_own_impl(ds, type, readonly, decrypt, tag, osp); 812eda14cbcSMatt Macy if (err != 0) { 813eda14cbcSMatt Macy dsl_dataset_disown(ds, flags, tag); 814eda14cbcSMatt Macy dsl_pool_rele(dp, FTAG); 815eda14cbcSMatt Macy return (err); 816eda14cbcSMatt Macy } 817eda14cbcSMatt Macy 818eda14cbcSMatt Macy /* 819eda14cbcSMatt Macy * User accounting requires the dataset to be decrypted and rw. 820eda14cbcSMatt Macy * We also don't begin user accounting during claiming to help 821eda14cbcSMatt Macy * speed up pool import times and to keep this txg reserved 822eda14cbcSMatt Macy * completely for recovery work. 823eda14cbcSMatt Macy */ 8247877fdebSMatt Macy if (!readonly && !dp->dp_spa->spa_claiming && 8257877fdebSMatt Macy (ds->ds_dir->dd_crypto_obj == 0 || decrypt)) { 8267877fdebSMatt Macy if (dmu_objset_userobjspace_upgradable(*osp) || 8277877fdebSMatt Macy dmu_objset_projectquota_upgradable(*osp)) { 828eda14cbcSMatt Macy dmu_objset_id_quota_upgrade(*osp); 8297877fdebSMatt Macy } else if (dmu_objset_userused_enabled(*osp)) { 8307877fdebSMatt Macy dmu_objset_userspace_upgrade(*osp); 8317877fdebSMatt Macy } 8327877fdebSMatt Macy } 833eda14cbcSMatt Macy 834eda14cbcSMatt Macy dsl_pool_rele(dp, FTAG); 835eda14cbcSMatt Macy return (0); 836eda14cbcSMatt Macy } 837eda14cbcSMatt Macy 838eda14cbcSMatt Macy int 839eda14cbcSMatt Macy dmu_objset_own_obj(dsl_pool_t *dp, uint64_t obj, dmu_objset_type_t type, 840a0b956f5SMartin Matuska boolean_t readonly, boolean_t decrypt, const void *tag, objset_t **osp) 841eda14cbcSMatt Macy { 842eda14cbcSMatt Macy dsl_dataset_t *ds; 843eda14cbcSMatt Macy int err; 8447877fdebSMatt Macy ds_hold_flags_t flags; 845eda14cbcSMatt Macy 8467877fdebSMatt Macy flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; 847eda14cbcSMatt Macy err = dsl_dataset_own_obj(dp, obj, flags, tag, &ds); 848eda14cbcSMatt Macy if (err != 0) 849eda14cbcSMatt Macy return (err); 850eda14cbcSMatt Macy 851eda14cbcSMatt Macy err = dmu_objset_own_impl(ds, type, readonly, decrypt, tag, osp); 852eda14cbcSMatt Macy if (err != 0) { 853eda14cbcSMatt Macy dsl_dataset_disown(ds, flags, tag); 854eda14cbcSMatt Macy return (err); 855eda14cbcSMatt Macy } 856eda14cbcSMatt Macy 857eda14cbcSMatt Macy return (0); 858eda14cbcSMatt Macy } 859eda14cbcSMatt Macy 860eda14cbcSMatt Macy void 861a0b956f5SMartin Matuska dmu_objset_rele_flags(objset_t *os, boolean_t decrypt, const void *tag) 862eda14cbcSMatt Macy { 8637877fdebSMatt Macy ds_hold_flags_t flags; 864eda14cbcSMatt Macy dsl_pool_t *dp = dmu_objset_pool(os); 8657877fdebSMatt Macy 8667877fdebSMatt Macy flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; 867eda14cbcSMatt Macy dsl_dataset_rele_flags(os->os_dsl_dataset, flags, tag); 868eda14cbcSMatt Macy dsl_pool_rele(dp, tag); 869eda14cbcSMatt Macy } 870eda14cbcSMatt Macy 871eda14cbcSMatt Macy void 872a0b956f5SMartin Matuska dmu_objset_rele(objset_t *os, const void *tag) 873eda14cbcSMatt Macy { 874eda14cbcSMatt Macy dmu_objset_rele_flags(os, B_FALSE, tag); 875eda14cbcSMatt Macy } 876eda14cbcSMatt Macy 877eda14cbcSMatt Macy /* 878eda14cbcSMatt Macy * When we are called, os MUST refer to an objset associated with a dataset 879eda14cbcSMatt Macy * that is owned by 'tag'; that is, is held and long held by 'tag' and ds_owner 880eda14cbcSMatt Macy * == tag. We will then release and reacquire ownership of the dataset while 881eda14cbcSMatt Macy * holding the pool config_rwlock to avoid intervening namespace or ownership 882eda14cbcSMatt Macy * changes may occur. 883eda14cbcSMatt Macy * 884eda14cbcSMatt Macy * This exists solely to accommodate zfs_ioc_userspace_upgrade()'s desire to 885eda14cbcSMatt Macy * release the hold on its dataset and acquire a new one on the dataset of the 886eda14cbcSMatt Macy * same name so that it can be partially torn down and reconstructed. 887eda14cbcSMatt Macy */ 888eda14cbcSMatt Macy void 889eda14cbcSMatt Macy dmu_objset_refresh_ownership(dsl_dataset_t *ds, dsl_dataset_t **newds, 890a0b956f5SMartin Matuska boolean_t decrypt, const void *tag) 891eda14cbcSMatt Macy { 892eda14cbcSMatt Macy dsl_pool_t *dp; 893eda14cbcSMatt Macy char name[ZFS_MAX_DATASET_NAME_LEN]; 8947877fdebSMatt Macy ds_hold_flags_t flags; 895eda14cbcSMatt Macy 8967877fdebSMatt Macy flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; 897eda14cbcSMatt Macy VERIFY3P(ds, !=, NULL); 898eda14cbcSMatt Macy VERIFY3P(ds->ds_owner, ==, tag); 899eda14cbcSMatt Macy VERIFY(dsl_dataset_long_held(ds)); 900eda14cbcSMatt Macy 901eda14cbcSMatt Macy dsl_dataset_name(ds, name); 902eda14cbcSMatt Macy dp = ds->ds_dir->dd_pool; 903eda14cbcSMatt Macy dsl_pool_config_enter(dp, FTAG); 9047877fdebSMatt Macy dsl_dataset_disown(ds, flags, tag); 9057877fdebSMatt Macy VERIFY0(dsl_dataset_own(dp, name, flags, tag, newds)); 906eda14cbcSMatt Macy dsl_pool_config_exit(dp, FTAG); 907eda14cbcSMatt Macy } 908eda14cbcSMatt Macy 909eda14cbcSMatt Macy void 910a0b956f5SMartin Matuska dmu_objset_disown(objset_t *os, boolean_t decrypt, const void *tag) 911eda14cbcSMatt Macy { 9127877fdebSMatt Macy ds_hold_flags_t flags; 9137877fdebSMatt Macy 9147877fdebSMatt Macy flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; 915eda14cbcSMatt Macy /* 916eda14cbcSMatt Macy * Stop upgrading thread 917eda14cbcSMatt Macy */ 918eda14cbcSMatt Macy dmu_objset_upgrade_stop(os); 9197877fdebSMatt Macy dsl_dataset_disown(os->os_dsl_dataset, flags, tag); 920eda14cbcSMatt Macy } 921eda14cbcSMatt Macy 922eda14cbcSMatt Macy void 923eda14cbcSMatt Macy dmu_objset_evict_dbufs(objset_t *os) 924eda14cbcSMatt Macy { 925eda14cbcSMatt Macy dnode_t *dn_marker; 926eda14cbcSMatt Macy dnode_t *dn; 927eda14cbcSMatt Macy 928eda14cbcSMatt Macy dn_marker = kmem_alloc(sizeof (dnode_t), KM_SLEEP); 929eda14cbcSMatt Macy 930eda14cbcSMatt Macy mutex_enter(&os->os_lock); 931eda14cbcSMatt Macy dn = list_head(&os->os_dnodes); 932eda14cbcSMatt Macy while (dn != NULL) { 933eda14cbcSMatt Macy /* 934eda14cbcSMatt Macy * Skip dnodes without holds. We have to do this dance 935eda14cbcSMatt Macy * because dnode_add_ref() only works if there is already a 936eda14cbcSMatt Macy * hold. If the dnode has no holds, then it has no dbufs. 937eda14cbcSMatt Macy */ 938eda14cbcSMatt Macy if (dnode_add_ref(dn, FTAG)) { 939eda14cbcSMatt Macy list_insert_after(&os->os_dnodes, dn, dn_marker); 940eda14cbcSMatt Macy mutex_exit(&os->os_lock); 941eda14cbcSMatt Macy 942eda14cbcSMatt Macy dnode_evict_dbufs(dn); 943eda14cbcSMatt Macy dnode_rele(dn, FTAG); 944eda14cbcSMatt Macy 945eda14cbcSMatt Macy mutex_enter(&os->os_lock); 946eda14cbcSMatt Macy dn = list_next(&os->os_dnodes, dn_marker); 947eda14cbcSMatt Macy list_remove(&os->os_dnodes, dn_marker); 948eda14cbcSMatt Macy } else { 949eda14cbcSMatt Macy dn = list_next(&os->os_dnodes, dn); 950eda14cbcSMatt Macy } 951eda14cbcSMatt Macy } 952eda14cbcSMatt Macy mutex_exit(&os->os_lock); 953eda14cbcSMatt Macy 954eda14cbcSMatt Macy kmem_free(dn_marker, sizeof (dnode_t)); 955eda14cbcSMatt Macy 956eda14cbcSMatt Macy if (DMU_USERUSED_DNODE(os) != NULL) { 957eda14cbcSMatt Macy if (DMU_PROJECTUSED_DNODE(os) != NULL) 958eda14cbcSMatt Macy dnode_evict_dbufs(DMU_PROJECTUSED_DNODE(os)); 959eda14cbcSMatt Macy dnode_evict_dbufs(DMU_GROUPUSED_DNODE(os)); 960eda14cbcSMatt Macy dnode_evict_dbufs(DMU_USERUSED_DNODE(os)); 961eda14cbcSMatt Macy } 962eda14cbcSMatt Macy dnode_evict_dbufs(DMU_META_DNODE(os)); 963eda14cbcSMatt Macy } 964eda14cbcSMatt Macy 965eda14cbcSMatt Macy /* 966eda14cbcSMatt Macy * Objset eviction processing is split into into two pieces. 967eda14cbcSMatt Macy * The first marks the objset as evicting, evicts any dbufs that 968eda14cbcSMatt Macy * have a refcount of zero, and then queues up the objset for the 969eda14cbcSMatt Macy * second phase of eviction. Once os->os_dnodes has been cleared by 970eda14cbcSMatt Macy * dnode_buf_pageout()->dnode_destroy(), the second phase is executed. 971eda14cbcSMatt Macy * The second phase closes the special dnodes, dequeues the objset from 972eda14cbcSMatt Macy * the list of those undergoing eviction, and finally frees the objset. 973eda14cbcSMatt Macy * 974eda14cbcSMatt Macy * NOTE: Due to asynchronous eviction processing (invocation of 975eda14cbcSMatt Macy * dnode_buf_pageout()), it is possible for the meta dnode for the 976eda14cbcSMatt Macy * objset to have no holds even though os->os_dnodes is not empty. 977eda14cbcSMatt Macy */ 978eda14cbcSMatt Macy void 979eda14cbcSMatt Macy dmu_objset_evict(objset_t *os) 980eda14cbcSMatt Macy { 981eda14cbcSMatt Macy dsl_dataset_t *ds = os->os_dsl_dataset; 982eda14cbcSMatt Macy 983eda14cbcSMatt Macy for (int t = 0; t < TXG_SIZE; t++) 984eda14cbcSMatt Macy ASSERT(!dmu_objset_is_dirty(os, t)); 985eda14cbcSMatt Macy 986eda14cbcSMatt Macy if (ds) 987eda14cbcSMatt Macy dsl_prop_unregister_all(ds, os); 988eda14cbcSMatt Macy 989eda14cbcSMatt Macy if (os->os_sa) 990eda14cbcSMatt Macy sa_tear_down(os); 991eda14cbcSMatt Macy 992eda14cbcSMatt Macy dmu_objset_evict_dbufs(os); 993eda14cbcSMatt Macy 994eda14cbcSMatt Macy mutex_enter(&os->os_lock); 995eda14cbcSMatt Macy spa_evicting_os_register(os->os_spa, os); 996eda14cbcSMatt Macy if (list_is_empty(&os->os_dnodes)) { 997eda14cbcSMatt Macy mutex_exit(&os->os_lock); 998eda14cbcSMatt Macy dmu_objset_evict_done(os); 999eda14cbcSMatt Macy } else { 1000eda14cbcSMatt Macy mutex_exit(&os->os_lock); 1001eda14cbcSMatt Macy } 1002eda14cbcSMatt Macy 1003eda14cbcSMatt Macy 1004eda14cbcSMatt Macy } 1005eda14cbcSMatt Macy 1006eda14cbcSMatt Macy void 1007eda14cbcSMatt Macy dmu_objset_evict_done(objset_t *os) 1008eda14cbcSMatt Macy { 1009eda14cbcSMatt Macy ASSERT3P(list_head(&os->os_dnodes), ==, NULL); 1010eda14cbcSMatt Macy 1011eda14cbcSMatt Macy dnode_special_close(&os->os_meta_dnode); 1012eda14cbcSMatt Macy if (DMU_USERUSED_DNODE(os)) { 1013eda14cbcSMatt Macy if (DMU_PROJECTUSED_DNODE(os)) 1014eda14cbcSMatt Macy dnode_special_close(&os->os_projectused_dnode); 1015eda14cbcSMatt Macy dnode_special_close(&os->os_userused_dnode); 1016eda14cbcSMatt Macy dnode_special_close(&os->os_groupused_dnode); 1017eda14cbcSMatt Macy } 1018eda14cbcSMatt Macy zil_free(os->os_zil); 1019eda14cbcSMatt Macy 1020eda14cbcSMatt Macy arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf); 1021eda14cbcSMatt Macy 1022eda14cbcSMatt Macy /* 1023eda14cbcSMatt Macy * This is a barrier to prevent the objset from going away in 1024eda14cbcSMatt Macy * dnode_move() until we can safely ensure that the objset is still in 1025eda14cbcSMatt Macy * use. We consider the objset valid before the barrier and invalid 1026eda14cbcSMatt Macy * after the barrier. 1027eda14cbcSMatt Macy */ 1028eda14cbcSMatt Macy rw_enter(&os_lock, RW_READER); 1029eda14cbcSMatt Macy rw_exit(&os_lock); 1030eda14cbcSMatt Macy 1031eda14cbcSMatt Macy kmem_free(os->os_obj_next_percpu, 1032eda14cbcSMatt Macy os->os_obj_next_percpu_len * sizeof (os->os_obj_next_percpu[0])); 1033eda14cbcSMatt Macy 1034eda14cbcSMatt Macy mutex_destroy(&os->os_lock); 1035eda14cbcSMatt Macy mutex_destroy(&os->os_userused_lock); 1036eda14cbcSMatt Macy mutex_destroy(&os->os_obj_lock); 1037eda14cbcSMatt Macy mutex_destroy(&os->os_user_ptr_lock); 1038eda14cbcSMatt Macy mutex_destroy(&os->os_upgrade_lock); 10393ff01b23SMartin Matuska for (int i = 0; i < TXG_SIZE; i++) 10403ff01b23SMartin Matuska multilist_destroy(&os->os_dirty_dnodes[i]); 1041eda14cbcSMatt Macy spa_evicting_os_deregister(os->os_spa, os); 1042eda14cbcSMatt Macy kmem_free(os, sizeof (objset_t)); 1043eda14cbcSMatt Macy } 1044eda14cbcSMatt Macy 1045eda14cbcSMatt Macy inode_timespec_t 1046eda14cbcSMatt Macy dmu_objset_snap_cmtime(objset_t *os) 1047eda14cbcSMatt Macy { 1048eda14cbcSMatt Macy return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir)); 1049eda14cbcSMatt Macy } 1050eda14cbcSMatt Macy 1051eda14cbcSMatt Macy objset_t * 1052eda14cbcSMatt Macy dmu_objset_create_impl_dnstats(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 1053eda14cbcSMatt Macy dmu_objset_type_t type, int levels, int blksz, int ibs, dmu_tx_t *tx) 1054eda14cbcSMatt Macy { 1055eda14cbcSMatt Macy objset_t *os; 1056eda14cbcSMatt Macy dnode_t *mdn; 1057eda14cbcSMatt Macy 1058eda14cbcSMatt Macy ASSERT(dmu_tx_is_syncing(tx)); 1059eda14cbcSMatt Macy 1060eda14cbcSMatt Macy if (blksz == 0) 1061eda14cbcSMatt Macy blksz = DNODE_BLOCK_SIZE; 1062eda14cbcSMatt Macy if (ibs == 0) 1063eda14cbcSMatt Macy ibs = DN_MAX_INDBLKSHIFT; 1064eda14cbcSMatt Macy 1065eda14cbcSMatt Macy if (ds != NULL) 1066eda14cbcSMatt Macy VERIFY0(dmu_objset_from_ds(ds, &os)); 1067eda14cbcSMatt Macy else 1068eda14cbcSMatt Macy VERIFY0(dmu_objset_open_impl(spa, NULL, bp, &os)); 1069eda14cbcSMatt Macy 1070eda14cbcSMatt Macy mdn = DMU_META_DNODE(os); 1071eda14cbcSMatt Macy 1072eda14cbcSMatt Macy dnode_allocate(mdn, DMU_OT_DNODE, blksz, ibs, DMU_OT_NONE, 0, 1073eda14cbcSMatt Macy DNODE_MIN_SLOTS, tx); 1074eda14cbcSMatt Macy 1075eda14cbcSMatt Macy /* 1076eda14cbcSMatt Macy * We don't want to have to increase the meta-dnode's nlevels 1077eda14cbcSMatt Macy * later, because then we could do it in quiescing context while 1078eda14cbcSMatt Macy * we are also accessing it in open context. 1079eda14cbcSMatt Macy * 1080eda14cbcSMatt Macy * This precaution is not necessary for the MOS (ds == NULL), 1081eda14cbcSMatt Macy * because the MOS is only updated in syncing context. 1082eda14cbcSMatt Macy * This is most fortunate: the MOS is the only objset that 1083eda14cbcSMatt Macy * needs to be synced multiple times as spa_sync() iterates 1084eda14cbcSMatt Macy * to convergence, so minimizing its dn_nlevels matters. 1085eda14cbcSMatt Macy */ 1086eda14cbcSMatt Macy if (ds != NULL) { 1087eda14cbcSMatt Macy if (levels == 0) { 1088eda14cbcSMatt Macy levels = 1; 1089eda14cbcSMatt Macy 1090eda14cbcSMatt Macy /* 1091eda14cbcSMatt Macy * Determine the number of levels necessary for the 1092eda14cbcSMatt Macy * meta-dnode to contain DN_MAX_OBJECT dnodes. Note 1093eda14cbcSMatt Macy * that in order to ensure that we do not overflow 1094eda14cbcSMatt Macy * 64 bits, there has to be a nlevels that gives us a 1095eda14cbcSMatt Macy * number of blocks > DN_MAX_OBJECT but < 2^64. 1096eda14cbcSMatt Macy * Therefore, (mdn->dn_indblkshift - SPA_BLKPTRSHIFT) 1097eda14cbcSMatt Macy * (10) must be less than (64 - log2(DN_MAX_OBJECT)) 1098eda14cbcSMatt Macy * (16). 1099eda14cbcSMatt Macy */ 1100eda14cbcSMatt Macy while ((uint64_t)mdn->dn_nblkptr << 1101eda14cbcSMatt Macy (mdn->dn_datablkshift - DNODE_SHIFT + (levels - 1) * 1102eda14cbcSMatt Macy (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) < 1103eda14cbcSMatt Macy DN_MAX_OBJECT) 1104eda14cbcSMatt Macy levels++; 1105eda14cbcSMatt Macy } 1106eda14cbcSMatt Macy 1107eda14cbcSMatt Macy mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] = 1108eda14cbcSMatt Macy mdn->dn_nlevels = levels; 1109eda14cbcSMatt Macy } 1110eda14cbcSMatt Macy 1111eda14cbcSMatt Macy ASSERT(type != DMU_OST_NONE); 1112eda14cbcSMatt Macy ASSERT(type != DMU_OST_ANY); 1113eda14cbcSMatt Macy ASSERT(type < DMU_OST_NUMTYPES); 1114eda14cbcSMatt Macy os->os_phys->os_type = type; 1115eda14cbcSMatt Macy 1116eda14cbcSMatt Macy /* 1117eda14cbcSMatt Macy * Enable user accounting if it is enabled and this is not an 1118eda14cbcSMatt Macy * encrypted receive. 1119eda14cbcSMatt Macy */ 1120eda14cbcSMatt Macy if (dmu_objset_userused_enabled(os) && 1121eda14cbcSMatt Macy (!os->os_encrypted || !dmu_objset_is_receiving(os))) { 1122eda14cbcSMatt Macy os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 1123eda14cbcSMatt Macy if (dmu_objset_userobjused_enabled(os)) { 1124*2a58b312SMartin Matuska ASSERT3P(ds, !=, NULL); 1125eda14cbcSMatt Macy ds->ds_feature_activation[ 1126eda14cbcSMatt Macy SPA_FEATURE_USEROBJ_ACCOUNTING] = (void *)B_TRUE; 1127eda14cbcSMatt Macy os->os_phys->os_flags |= 1128eda14cbcSMatt Macy OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE; 1129eda14cbcSMatt Macy } 1130eda14cbcSMatt Macy if (dmu_objset_projectquota_enabled(os)) { 1131*2a58b312SMartin Matuska ASSERT3P(ds, !=, NULL); 1132eda14cbcSMatt Macy ds->ds_feature_activation[ 1133eda14cbcSMatt Macy SPA_FEATURE_PROJECT_QUOTA] = (void *)B_TRUE; 1134eda14cbcSMatt Macy os->os_phys->os_flags |= 1135eda14cbcSMatt Macy OBJSET_FLAG_PROJECTQUOTA_COMPLETE; 1136eda14cbcSMatt Macy } 1137eda14cbcSMatt Macy os->os_flags = os->os_phys->os_flags; 1138eda14cbcSMatt Macy } 1139eda14cbcSMatt Macy 1140eda14cbcSMatt Macy dsl_dataset_dirty(ds, tx); 1141eda14cbcSMatt Macy 1142eda14cbcSMatt Macy return (os); 1143eda14cbcSMatt Macy } 1144eda14cbcSMatt Macy 1145eda14cbcSMatt Macy /* called from dsl for meta-objset */ 1146eda14cbcSMatt Macy objset_t * 1147eda14cbcSMatt Macy dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 1148eda14cbcSMatt Macy dmu_objset_type_t type, dmu_tx_t *tx) 1149eda14cbcSMatt Macy { 1150eda14cbcSMatt Macy return (dmu_objset_create_impl_dnstats(spa, ds, bp, type, 0, 0, 0, tx)); 1151eda14cbcSMatt Macy } 1152eda14cbcSMatt Macy 1153eda14cbcSMatt Macy typedef struct dmu_objset_create_arg { 1154eda14cbcSMatt Macy const char *doca_name; 1155eda14cbcSMatt Macy cred_t *doca_cred; 1156eda14cbcSMatt Macy proc_t *doca_proc; 1157eda14cbcSMatt Macy void (*doca_userfunc)(objset_t *os, void *arg, 1158eda14cbcSMatt Macy cred_t *cr, dmu_tx_t *tx); 1159eda14cbcSMatt Macy void *doca_userarg; 1160eda14cbcSMatt Macy dmu_objset_type_t doca_type; 1161eda14cbcSMatt Macy uint64_t doca_flags; 1162eda14cbcSMatt Macy dsl_crypto_params_t *doca_dcp; 1163eda14cbcSMatt Macy } dmu_objset_create_arg_t; 1164eda14cbcSMatt Macy 1165eda14cbcSMatt Macy static int 1166eda14cbcSMatt Macy dmu_objset_create_check(void *arg, dmu_tx_t *tx) 1167eda14cbcSMatt Macy { 1168eda14cbcSMatt Macy dmu_objset_create_arg_t *doca = arg; 1169eda14cbcSMatt Macy dsl_pool_t *dp = dmu_tx_pool(tx); 1170eda14cbcSMatt Macy dsl_dir_t *pdd; 1171eda14cbcSMatt Macy dsl_dataset_t *parentds; 1172eda14cbcSMatt Macy objset_t *parentos; 1173eda14cbcSMatt Macy const char *tail; 1174eda14cbcSMatt Macy int error; 1175eda14cbcSMatt Macy 1176eda14cbcSMatt Macy if (strchr(doca->doca_name, '@') != NULL) 1177eda14cbcSMatt Macy return (SET_ERROR(EINVAL)); 1178eda14cbcSMatt Macy 1179eda14cbcSMatt Macy if (strlen(doca->doca_name) >= ZFS_MAX_DATASET_NAME_LEN) 1180eda14cbcSMatt Macy return (SET_ERROR(ENAMETOOLONG)); 1181eda14cbcSMatt Macy 1182eda14cbcSMatt Macy if (dataset_nestcheck(doca->doca_name) != 0) 1183eda14cbcSMatt Macy return (SET_ERROR(ENAMETOOLONG)); 1184eda14cbcSMatt Macy 1185eda14cbcSMatt Macy error = dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail); 1186eda14cbcSMatt Macy if (error != 0) 1187eda14cbcSMatt Macy return (error); 1188eda14cbcSMatt Macy if (tail == NULL) { 1189eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1190eda14cbcSMatt Macy return (SET_ERROR(EEXIST)); 1191eda14cbcSMatt Macy } 1192eda14cbcSMatt Macy 1193eda14cbcSMatt Macy error = dmu_objset_create_crypt_check(pdd, doca->doca_dcp, NULL); 1194eda14cbcSMatt Macy if (error != 0) { 1195eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1196eda14cbcSMatt Macy return (error); 1197eda14cbcSMatt Macy } 1198eda14cbcSMatt Macy 1199eda14cbcSMatt Macy error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL, 1200eda14cbcSMatt Macy doca->doca_cred, doca->doca_proc); 1201eda14cbcSMatt Macy if (error != 0) { 1202eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1203eda14cbcSMatt Macy return (error); 1204eda14cbcSMatt Macy } 1205eda14cbcSMatt Macy 1206eda14cbcSMatt Macy /* can't create below anything but filesystems (eg. no ZVOLs) */ 1207eda14cbcSMatt Macy error = dsl_dataset_hold_obj(pdd->dd_pool, 1208eda14cbcSMatt Macy dsl_dir_phys(pdd)->dd_head_dataset_obj, FTAG, &parentds); 1209eda14cbcSMatt Macy if (error != 0) { 1210eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1211eda14cbcSMatt Macy return (error); 1212eda14cbcSMatt Macy } 1213eda14cbcSMatt Macy error = dmu_objset_from_ds(parentds, &parentos); 1214eda14cbcSMatt Macy if (error != 0) { 1215eda14cbcSMatt Macy dsl_dataset_rele(parentds, FTAG); 1216eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1217eda14cbcSMatt Macy return (error); 1218eda14cbcSMatt Macy } 1219eda14cbcSMatt Macy if (dmu_objset_type(parentos) != DMU_OST_ZFS) { 1220eda14cbcSMatt Macy dsl_dataset_rele(parentds, FTAG); 1221eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1222eda14cbcSMatt Macy return (SET_ERROR(ZFS_ERR_WRONG_PARENT)); 1223eda14cbcSMatt Macy } 1224eda14cbcSMatt Macy dsl_dataset_rele(parentds, FTAG); 1225eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1226eda14cbcSMatt Macy 1227eda14cbcSMatt Macy return (error); 1228eda14cbcSMatt Macy } 1229eda14cbcSMatt Macy 1230eda14cbcSMatt Macy static void 1231eda14cbcSMatt Macy dmu_objset_create_sync(void *arg, dmu_tx_t *tx) 1232eda14cbcSMatt Macy { 1233eda14cbcSMatt Macy dmu_objset_create_arg_t *doca = arg; 1234eda14cbcSMatt Macy dsl_pool_t *dp = dmu_tx_pool(tx); 1235eda14cbcSMatt Macy spa_t *spa = dp->dp_spa; 1236eda14cbcSMatt Macy dsl_dir_t *pdd; 1237eda14cbcSMatt Macy const char *tail; 1238eda14cbcSMatt Macy dsl_dataset_t *ds; 1239eda14cbcSMatt Macy uint64_t obj; 1240eda14cbcSMatt Macy blkptr_t *bp; 1241eda14cbcSMatt Macy objset_t *os; 1242eda14cbcSMatt Macy zio_t *rzio; 1243eda14cbcSMatt Macy 1244eda14cbcSMatt Macy VERIFY0(dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail)); 1245eda14cbcSMatt Macy 1246eda14cbcSMatt Macy obj = dsl_dataset_create_sync(pdd, tail, NULL, doca->doca_flags, 1247eda14cbcSMatt Macy doca->doca_cred, doca->doca_dcp, tx); 1248eda14cbcSMatt Macy 1249eda14cbcSMatt Macy VERIFY0(dsl_dataset_hold_obj_flags(pdd->dd_pool, obj, 1250eda14cbcSMatt Macy DS_HOLD_FLAG_DECRYPT, FTAG, &ds)); 1251eda14cbcSMatt Macy rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG); 1252eda14cbcSMatt Macy bp = dsl_dataset_get_blkptr(ds); 1253eda14cbcSMatt Macy os = dmu_objset_create_impl(spa, ds, bp, doca->doca_type, tx); 1254eda14cbcSMatt Macy rrw_exit(&ds->ds_bp_rwlock, FTAG); 1255eda14cbcSMatt Macy 1256eda14cbcSMatt Macy if (doca->doca_userfunc != NULL) { 1257eda14cbcSMatt Macy doca->doca_userfunc(os, doca->doca_userarg, 1258eda14cbcSMatt Macy doca->doca_cred, tx); 1259eda14cbcSMatt Macy } 1260eda14cbcSMatt Macy 1261eda14cbcSMatt Macy /* 1262eda14cbcSMatt Macy * The doca_userfunc() may write out some data that needs to be 1263eda14cbcSMatt Macy * encrypted if the dataset is encrypted (specifically the root 1264eda14cbcSMatt Macy * directory). This data must be written out before the encryption 1265eda14cbcSMatt Macy * key mapping is removed by dsl_dataset_rele_flags(). Force the 1266eda14cbcSMatt Macy * I/O to occur immediately by invoking the relevant sections of 1267eda14cbcSMatt Macy * dsl_pool_sync(). 1268eda14cbcSMatt Macy */ 1269eda14cbcSMatt Macy if (os->os_encrypted) { 1270eda14cbcSMatt Macy dsl_dataset_t *tmpds = NULL; 1271eda14cbcSMatt Macy boolean_t need_sync_done = B_FALSE; 1272eda14cbcSMatt Macy 1273eda14cbcSMatt Macy mutex_enter(&ds->ds_lock); 1274eda14cbcSMatt Macy ds->ds_owner = FTAG; 1275eda14cbcSMatt Macy mutex_exit(&ds->ds_lock); 1276eda14cbcSMatt Macy 1277eda14cbcSMatt Macy rzio = zio_root(spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED); 1278eda14cbcSMatt Macy tmpds = txg_list_remove_this(&dp->dp_dirty_datasets, ds, 1279eda14cbcSMatt Macy tx->tx_txg); 1280eda14cbcSMatt Macy if (tmpds != NULL) { 1281eda14cbcSMatt Macy dsl_dataset_sync(ds, rzio, tx); 1282eda14cbcSMatt Macy need_sync_done = B_TRUE; 1283eda14cbcSMatt Macy } 1284eda14cbcSMatt Macy VERIFY0(zio_wait(rzio)); 1285eda14cbcSMatt Macy 12867877fdebSMatt Macy dmu_objset_sync_done(os, tx); 1287eda14cbcSMatt Macy taskq_wait(dp->dp_sync_taskq); 1288eda14cbcSMatt Macy if (txg_list_member(&dp->dp_dirty_datasets, ds, tx->tx_txg)) { 1289eda14cbcSMatt Macy ASSERT3P(ds->ds_key_mapping, !=, NULL); 1290eda14cbcSMatt Macy key_mapping_rele(spa, ds->ds_key_mapping, ds); 1291eda14cbcSMatt Macy } 1292eda14cbcSMatt Macy 1293eda14cbcSMatt Macy rzio = zio_root(spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED); 1294eda14cbcSMatt Macy tmpds = txg_list_remove_this(&dp->dp_dirty_datasets, ds, 1295eda14cbcSMatt Macy tx->tx_txg); 1296eda14cbcSMatt Macy if (tmpds != NULL) { 1297eda14cbcSMatt Macy dmu_buf_rele(ds->ds_dbuf, ds); 1298eda14cbcSMatt Macy dsl_dataset_sync(ds, rzio, tx); 1299eda14cbcSMatt Macy } 1300eda14cbcSMatt Macy VERIFY0(zio_wait(rzio)); 1301eda14cbcSMatt Macy 1302eda14cbcSMatt Macy if (need_sync_done) { 1303eda14cbcSMatt Macy ASSERT3P(ds->ds_key_mapping, !=, NULL); 1304eda14cbcSMatt Macy key_mapping_rele(spa, ds->ds_key_mapping, ds); 1305eda14cbcSMatt Macy dsl_dataset_sync_done(ds, tx); 1306*2a58b312SMartin Matuska dmu_buf_rele(ds->ds_dbuf, ds); 1307eda14cbcSMatt Macy } 1308eda14cbcSMatt Macy 1309eda14cbcSMatt Macy mutex_enter(&ds->ds_lock); 1310eda14cbcSMatt Macy ds->ds_owner = NULL; 1311eda14cbcSMatt Macy mutex_exit(&ds->ds_lock); 1312eda14cbcSMatt Macy } 1313eda14cbcSMatt Macy 1314eda14cbcSMatt Macy spa_history_log_internal_ds(ds, "create", tx, " "); 1315eda14cbcSMatt Macy 1316eda14cbcSMatt Macy dsl_dataset_rele_flags(ds, DS_HOLD_FLAG_DECRYPT, FTAG); 1317eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1318eda14cbcSMatt Macy } 1319eda14cbcSMatt Macy 1320eda14cbcSMatt Macy int 1321eda14cbcSMatt Macy dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, 1322eda14cbcSMatt Macy dsl_crypto_params_t *dcp, dmu_objset_create_sync_func_t func, void *arg) 1323eda14cbcSMatt Macy { 1324eda14cbcSMatt Macy dmu_objset_create_arg_t doca; 1325eda14cbcSMatt Macy dsl_crypto_params_t tmp_dcp = { 0 }; 1326eda14cbcSMatt Macy 1327eda14cbcSMatt Macy doca.doca_name = name; 1328eda14cbcSMatt Macy doca.doca_cred = CRED(); 1329eda14cbcSMatt Macy doca.doca_proc = curproc; 1330eda14cbcSMatt Macy doca.doca_flags = flags; 1331eda14cbcSMatt Macy doca.doca_userfunc = func; 1332eda14cbcSMatt Macy doca.doca_userarg = arg; 1333eda14cbcSMatt Macy doca.doca_type = type; 1334eda14cbcSMatt Macy 1335eda14cbcSMatt Macy /* 1336eda14cbcSMatt Macy * Some callers (mostly for testing) do not provide a dcp on their 1337eda14cbcSMatt Macy * own but various code inside the sync task will require it to be 1338eda14cbcSMatt Macy * allocated. Rather than adding NULL checks throughout this code 1339eda14cbcSMatt Macy * or adding dummy dcp's to all of the callers we simply create a 1340eda14cbcSMatt Macy * dummy one here and use that. This zero dcp will have the same 1341eda14cbcSMatt Macy * effect as asking for inheritance of all encryption params. 1342eda14cbcSMatt Macy */ 1343eda14cbcSMatt Macy doca.doca_dcp = (dcp != NULL) ? dcp : &tmp_dcp; 1344eda14cbcSMatt Macy 1345eda14cbcSMatt Macy int rv = dsl_sync_task(name, 1346eda14cbcSMatt Macy dmu_objset_create_check, dmu_objset_create_sync, &doca, 1347eda14cbcSMatt Macy 6, ZFS_SPACE_CHECK_NORMAL); 1348eda14cbcSMatt Macy 1349eda14cbcSMatt Macy if (rv == 0) 1350eda14cbcSMatt Macy zvol_create_minor(name); 1351eda14cbcSMatt Macy return (rv); 1352eda14cbcSMatt Macy } 1353eda14cbcSMatt Macy 1354eda14cbcSMatt Macy typedef struct dmu_objset_clone_arg { 1355eda14cbcSMatt Macy const char *doca_clone; 1356eda14cbcSMatt Macy const char *doca_origin; 1357eda14cbcSMatt Macy cred_t *doca_cred; 1358eda14cbcSMatt Macy proc_t *doca_proc; 1359eda14cbcSMatt Macy } dmu_objset_clone_arg_t; 1360eda14cbcSMatt Macy 1361eda14cbcSMatt Macy static int 1362eda14cbcSMatt Macy dmu_objset_clone_check(void *arg, dmu_tx_t *tx) 1363eda14cbcSMatt Macy { 1364eda14cbcSMatt Macy dmu_objset_clone_arg_t *doca = arg; 1365eda14cbcSMatt Macy dsl_dir_t *pdd; 1366eda14cbcSMatt Macy const char *tail; 1367eda14cbcSMatt Macy int error; 1368eda14cbcSMatt Macy dsl_dataset_t *origin; 1369eda14cbcSMatt Macy dsl_pool_t *dp = dmu_tx_pool(tx); 1370eda14cbcSMatt Macy 1371eda14cbcSMatt Macy if (strchr(doca->doca_clone, '@') != NULL) 1372eda14cbcSMatt Macy return (SET_ERROR(EINVAL)); 1373eda14cbcSMatt Macy 1374eda14cbcSMatt Macy if (strlen(doca->doca_clone) >= ZFS_MAX_DATASET_NAME_LEN) 1375eda14cbcSMatt Macy return (SET_ERROR(ENAMETOOLONG)); 1376eda14cbcSMatt Macy 1377eda14cbcSMatt Macy error = dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail); 1378eda14cbcSMatt Macy if (error != 0) 1379eda14cbcSMatt Macy return (error); 1380eda14cbcSMatt Macy if (tail == NULL) { 1381eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1382eda14cbcSMatt Macy return (SET_ERROR(EEXIST)); 1383eda14cbcSMatt Macy } 1384eda14cbcSMatt Macy 1385eda14cbcSMatt Macy error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL, 1386eda14cbcSMatt Macy doca->doca_cred, doca->doca_proc); 1387eda14cbcSMatt Macy if (error != 0) { 1388eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1389eda14cbcSMatt Macy return (SET_ERROR(EDQUOT)); 1390eda14cbcSMatt Macy } 1391eda14cbcSMatt Macy 1392eda14cbcSMatt Macy error = dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin); 1393eda14cbcSMatt Macy if (error != 0) { 1394eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1395eda14cbcSMatt Macy return (error); 1396eda14cbcSMatt Macy } 1397eda14cbcSMatt Macy 1398eda14cbcSMatt Macy /* You can only clone snapshots, not the head datasets. */ 1399eda14cbcSMatt Macy if (!origin->ds_is_snapshot) { 1400eda14cbcSMatt Macy dsl_dataset_rele(origin, FTAG); 1401eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1402eda14cbcSMatt Macy return (SET_ERROR(EINVAL)); 1403eda14cbcSMatt Macy } 1404eda14cbcSMatt Macy 1405eda14cbcSMatt Macy dsl_dataset_rele(origin, FTAG); 1406eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1407eda14cbcSMatt Macy 1408eda14cbcSMatt Macy return (0); 1409eda14cbcSMatt Macy } 1410eda14cbcSMatt Macy 1411eda14cbcSMatt Macy static void 1412eda14cbcSMatt Macy dmu_objset_clone_sync(void *arg, dmu_tx_t *tx) 1413eda14cbcSMatt Macy { 1414eda14cbcSMatt Macy dmu_objset_clone_arg_t *doca = arg; 1415eda14cbcSMatt Macy dsl_pool_t *dp = dmu_tx_pool(tx); 1416eda14cbcSMatt Macy dsl_dir_t *pdd; 1417eda14cbcSMatt Macy const char *tail; 1418eda14cbcSMatt Macy dsl_dataset_t *origin, *ds; 1419eda14cbcSMatt Macy uint64_t obj; 1420eda14cbcSMatt Macy char namebuf[ZFS_MAX_DATASET_NAME_LEN]; 1421eda14cbcSMatt Macy 1422eda14cbcSMatt Macy VERIFY0(dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail)); 1423eda14cbcSMatt Macy VERIFY0(dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin)); 1424eda14cbcSMatt Macy 1425eda14cbcSMatt Macy obj = dsl_dataset_create_sync(pdd, tail, origin, 0, 1426eda14cbcSMatt Macy doca->doca_cred, NULL, tx); 1427eda14cbcSMatt Macy 1428eda14cbcSMatt Macy VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds)); 1429eda14cbcSMatt Macy dsl_dataset_name(origin, namebuf); 1430eda14cbcSMatt Macy spa_history_log_internal_ds(ds, "clone", tx, 1431eda14cbcSMatt Macy "origin=%s (%llu)", namebuf, (u_longlong_t)origin->ds_object); 1432eda14cbcSMatt Macy dsl_dataset_rele(ds, FTAG); 1433eda14cbcSMatt Macy dsl_dataset_rele(origin, FTAG); 1434eda14cbcSMatt Macy dsl_dir_rele(pdd, FTAG); 1435eda14cbcSMatt Macy } 1436eda14cbcSMatt Macy 1437eda14cbcSMatt Macy int 1438eda14cbcSMatt Macy dmu_objset_clone(const char *clone, const char *origin) 1439eda14cbcSMatt Macy { 1440eda14cbcSMatt Macy dmu_objset_clone_arg_t doca; 1441eda14cbcSMatt Macy 1442eda14cbcSMatt Macy doca.doca_clone = clone; 1443eda14cbcSMatt Macy doca.doca_origin = origin; 1444eda14cbcSMatt Macy doca.doca_cred = CRED(); 1445eda14cbcSMatt Macy doca.doca_proc = curproc; 1446eda14cbcSMatt Macy 1447eda14cbcSMatt Macy int rv = dsl_sync_task(clone, 1448eda14cbcSMatt Macy dmu_objset_clone_check, dmu_objset_clone_sync, &doca, 1449eda14cbcSMatt Macy 6, ZFS_SPACE_CHECK_NORMAL); 1450eda14cbcSMatt Macy 1451eda14cbcSMatt Macy if (rv == 0) 1452eda14cbcSMatt Macy zvol_create_minor(clone); 1453eda14cbcSMatt Macy 1454eda14cbcSMatt Macy return (rv); 1455eda14cbcSMatt Macy } 1456eda14cbcSMatt Macy 1457eda14cbcSMatt Macy int 1458eda14cbcSMatt Macy dmu_objset_snapshot_one(const char *fsname, const char *snapname) 1459eda14cbcSMatt Macy { 1460eda14cbcSMatt Macy int err; 1461eda14cbcSMatt Macy char *longsnap = kmem_asprintf("%s@%s", fsname, snapname); 1462eda14cbcSMatt Macy nvlist_t *snaps = fnvlist_alloc(); 1463eda14cbcSMatt Macy 1464eda14cbcSMatt Macy fnvlist_add_boolean(snaps, longsnap); 1465eda14cbcSMatt Macy kmem_strfree(longsnap); 1466eda14cbcSMatt Macy err = dsl_dataset_snapshot(snaps, NULL, NULL); 1467eda14cbcSMatt Macy fnvlist_free(snaps); 1468eda14cbcSMatt Macy return (err); 1469eda14cbcSMatt Macy } 1470eda14cbcSMatt Macy 1471eda14cbcSMatt Macy static void 1472eda14cbcSMatt Macy dmu_objset_upgrade_task_cb(void *data) 1473eda14cbcSMatt Macy { 1474eda14cbcSMatt Macy objset_t *os = data; 1475eda14cbcSMatt Macy 1476eda14cbcSMatt Macy mutex_enter(&os->os_upgrade_lock); 1477eda14cbcSMatt Macy os->os_upgrade_status = EINTR; 1478eda14cbcSMatt Macy if (!os->os_upgrade_exit) { 14797877fdebSMatt Macy int status; 14807877fdebSMatt Macy 1481eda14cbcSMatt Macy mutex_exit(&os->os_upgrade_lock); 1482eda14cbcSMatt Macy 14837877fdebSMatt Macy status = os->os_upgrade_cb(os); 14847877fdebSMatt Macy 1485eda14cbcSMatt Macy mutex_enter(&os->os_upgrade_lock); 14867877fdebSMatt Macy 14877877fdebSMatt Macy os->os_upgrade_status = status; 1488eda14cbcSMatt Macy } 1489eda14cbcSMatt Macy os->os_upgrade_exit = B_TRUE; 1490eda14cbcSMatt Macy os->os_upgrade_id = 0; 1491eda14cbcSMatt Macy mutex_exit(&os->os_upgrade_lock); 1492eda14cbcSMatt Macy dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag); 1493eda14cbcSMatt Macy } 1494eda14cbcSMatt Macy 1495eda14cbcSMatt Macy static void 1496eda14cbcSMatt Macy dmu_objset_upgrade(objset_t *os, dmu_objset_upgrade_cb_t cb) 1497eda14cbcSMatt Macy { 1498eda14cbcSMatt Macy if (os->os_upgrade_id != 0) 1499eda14cbcSMatt Macy return; 1500eda14cbcSMatt Macy 1501eda14cbcSMatt Macy ASSERT(dsl_pool_config_held(dmu_objset_pool(os))); 1502eda14cbcSMatt Macy dsl_dataset_long_hold(dmu_objset_ds(os), upgrade_tag); 1503eda14cbcSMatt Macy 1504eda14cbcSMatt Macy mutex_enter(&os->os_upgrade_lock); 1505eda14cbcSMatt Macy if (os->os_upgrade_id == 0 && os->os_upgrade_status == 0) { 1506eda14cbcSMatt Macy os->os_upgrade_exit = B_FALSE; 1507eda14cbcSMatt Macy os->os_upgrade_cb = cb; 1508eda14cbcSMatt Macy os->os_upgrade_id = taskq_dispatch( 1509eda14cbcSMatt Macy os->os_spa->spa_upgrade_taskq, 1510eda14cbcSMatt Macy dmu_objset_upgrade_task_cb, os, TQ_SLEEP); 1511eda14cbcSMatt Macy if (os->os_upgrade_id == TASKQID_INVALID) { 1512eda14cbcSMatt Macy dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag); 1513eda14cbcSMatt Macy os->os_upgrade_status = ENOMEM; 1514eda14cbcSMatt Macy } 15157877fdebSMatt Macy } else { 15167877fdebSMatt Macy dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag); 1517eda14cbcSMatt Macy } 1518eda14cbcSMatt Macy mutex_exit(&os->os_upgrade_lock); 1519eda14cbcSMatt Macy } 1520eda14cbcSMatt Macy 1521eda14cbcSMatt Macy static void 1522eda14cbcSMatt Macy dmu_objset_upgrade_stop(objset_t *os) 1523eda14cbcSMatt Macy { 1524eda14cbcSMatt Macy mutex_enter(&os->os_upgrade_lock); 1525eda14cbcSMatt Macy os->os_upgrade_exit = B_TRUE; 1526eda14cbcSMatt Macy if (os->os_upgrade_id != 0) { 1527eda14cbcSMatt Macy taskqid_t id = os->os_upgrade_id; 1528eda14cbcSMatt Macy 1529eda14cbcSMatt Macy os->os_upgrade_id = 0; 1530eda14cbcSMatt Macy mutex_exit(&os->os_upgrade_lock); 1531eda14cbcSMatt Macy 1532eda14cbcSMatt Macy if ((taskq_cancel_id(os->os_spa->spa_upgrade_taskq, id)) == 0) { 1533eda14cbcSMatt Macy dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag); 1534eda14cbcSMatt Macy } 1535eda14cbcSMatt Macy txg_wait_synced(os->os_spa->spa_dsl_pool, 0); 1536eda14cbcSMatt Macy } else { 1537eda14cbcSMatt Macy mutex_exit(&os->os_upgrade_lock); 1538eda14cbcSMatt Macy } 1539eda14cbcSMatt Macy } 1540eda14cbcSMatt Macy 1541eda14cbcSMatt Macy static void 1542eda14cbcSMatt Macy dmu_objset_sync_dnodes(multilist_sublist_t *list, dmu_tx_t *tx) 1543eda14cbcSMatt Macy { 1544eda14cbcSMatt Macy dnode_t *dn; 1545eda14cbcSMatt Macy 1546eda14cbcSMatt Macy while ((dn = multilist_sublist_head(list)) != NULL) { 1547eda14cbcSMatt Macy ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); 1548eda14cbcSMatt Macy ASSERT(dn->dn_dbuf->db_data_pending); 1549eda14cbcSMatt Macy /* 1550eda14cbcSMatt Macy * Initialize dn_zio outside dnode_sync() because the 1551eda14cbcSMatt Macy * meta-dnode needs to set it outside dnode_sync(). 1552eda14cbcSMatt Macy */ 1553eda14cbcSMatt Macy dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio; 1554eda14cbcSMatt Macy ASSERT(dn->dn_zio); 1555eda14cbcSMatt Macy 1556eda14cbcSMatt Macy ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS); 1557eda14cbcSMatt Macy multilist_sublist_remove(list, dn); 1558eda14cbcSMatt Macy 1559eda14cbcSMatt Macy /* 15607877fdebSMatt Macy * See the comment above dnode_rele_task() for an explanation 15617877fdebSMatt Macy * of why this dnode hold is always needed (even when not 15627877fdebSMatt Macy * doing user accounting). 1563eda14cbcSMatt Macy */ 15643ff01b23SMartin Matuska multilist_t *newlist = &dn->dn_objset->os_synced_dnodes; 1565eda14cbcSMatt Macy (void) dnode_add_ref(dn, newlist); 1566eda14cbcSMatt Macy multilist_insert(newlist, dn); 1567eda14cbcSMatt Macy 1568eda14cbcSMatt Macy dnode_sync(dn, tx); 1569eda14cbcSMatt Macy } 1570eda14cbcSMatt Macy } 1571eda14cbcSMatt Macy 1572eda14cbcSMatt Macy static void 1573eda14cbcSMatt Macy dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg) 1574eda14cbcSMatt Macy { 1575e92ffd9bSMartin Matuska (void) abuf; 1576eda14cbcSMatt Macy blkptr_t *bp = zio->io_bp; 1577eda14cbcSMatt Macy objset_t *os = arg; 1578eda14cbcSMatt Macy dnode_phys_t *dnp = &os->os_phys->os_meta_dnode; 1579eda14cbcSMatt Macy uint64_t fill = 0; 1580eda14cbcSMatt Macy 1581eda14cbcSMatt Macy ASSERT(!BP_IS_EMBEDDED(bp)); 1582eda14cbcSMatt Macy ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET); 1583eda14cbcSMatt Macy ASSERT0(BP_GET_LEVEL(bp)); 1584eda14cbcSMatt Macy 1585eda14cbcSMatt Macy /* 1586eda14cbcSMatt Macy * Update rootbp fill count: it should be the number of objects 1587eda14cbcSMatt Macy * allocated in the object set (not counting the "special" 1588eda14cbcSMatt Macy * objects that are stored in the objset_phys_t -- the meta 1589eda14cbcSMatt Macy * dnode and user/group/project accounting objects). 1590eda14cbcSMatt Macy */ 1591eda14cbcSMatt Macy for (int i = 0; i < dnp->dn_nblkptr; i++) 1592eda14cbcSMatt Macy fill += BP_GET_FILL(&dnp->dn_blkptr[i]); 1593eda14cbcSMatt Macy 1594eda14cbcSMatt Macy BP_SET_FILL(bp, fill); 1595eda14cbcSMatt Macy 1596eda14cbcSMatt Macy if (os->os_dsl_dataset != NULL) 1597eda14cbcSMatt Macy rrw_enter(&os->os_dsl_dataset->ds_bp_rwlock, RW_WRITER, FTAG); 1598eda14cbcSMatt Macy *os->os_rootbp = *bp; 1599eda14cbcSMatt Macy if (os->os_dsl_dataset != NULL) 1600eda14cbcSMatt Macy rrw_exit(&os->os_dsl_dataset->ds_bp_rwlock, FTAG); 1601eda14cbcSMatt Macy } 1602eda14cbcSMatt Macy 1603eda14cbcSMatt Macy static void 1604eda14cbcSMatt Macy dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg) 1605eda14cbcSMatt Macy { 1606e92ffd9bSMartin Matuska (void) abuf; 1607eda14cbcSMatt Macy blkptr_t *bp = zio->io_bp; 1608eda14cbcSMatt Macy blkptr_t *bp_orig = &zio->io_bp_orig; 1609eda14cbcSMatt Macy objset_t *os = arg; 1610eda14cbcSMatt Macy 1611eda14cbcSMatt Macy if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { 1612eda14cbcSMatt Macy ASSERT(BP_EQUAL(bp, bp_orig)); 1613eda14cbcSMatt Macy } else { 1614eda14cbcSMatt Macy dsl_dataset_t *ds = os->os_dsl_dataset; 1615eda14cbcSMatt Macy dmu_tx_t *tx = os->os_synctx; 1616eda14cbcSMatt Macy 1617eda14cbcSMatt Macy (void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE); 1618eda14cbcSMatt Macy dsl_dataset_block_born(ds, bp, tx); 1619eda14cbcSMatt Macy } 1620eda14cbcSMatt Macy kmem_free(bp, sizeof (*bp)); 1621eda14cbcSMatt Macy } 1622eda14cbcSMatt Macy 1623eda14cbcSMatt Macy typedef struct sync_dnodes_arg { 1624eda14cbcSMatt Macy multilist_t *sda_list; 1625eda14cbcSMatt Macy int sda_sublist_idx; 1626eda14cbcSMatt Macy multilist_t *sda_newlist; 1627eda14cbcSMatt Macy dmu_tx_t *sda_tx; 1628eda14cbcSMatt Macy } sync_dnodes_arg_t; 1629eda14cbcSMatt Macy 1630eda14cbcSMatt Macy static void 1631eda14cbcSMatt Macy sync_dnodes_task(void *arg) 1632eda14cbcSMatt Macy { 1633eda14cbcSMatt Macy sync_dnodes_arg_t *sda = arg; 1634eda14cbcSMatt Macy 1635eda14cbcSMatt Macy multilist_sublist_t *ms = 1636eda14cbcSMatt Macy multilist_sublist_lock(sda->sda_list, sda->sda_sublist_idx); 1637eda14cbcSMatt Macy 1638eda14cbcSMatt Macy dmu_objset_sync_dnodes(ms, sda->sda_tx); 1639eda14cbcSMatt Macy 1640eda14cbcSMatt Macy multilist_sublist_unlock(ms); 1641eda14cbcSMatt Macy 1642eda14cbcSMatt Macy kmem_free(sda, sizeof (*sda)); 1643eda14cbcSMatt Macy } 1644eda14cbcSMatt Macy 1645eda14cbcSMatt Macy 1646eda14cbcSMatt Macy /* called from dsl */ 1647eda14cbcSMatt Macy void 1648eda14cbcSMatt Macy dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) 1649eda14cbcSMatt Macy { 1650eda14cbcSMatt Macy int txgoff; 1651eda14cbcSMatt Macy zbookmark_phys_t zb; 1652eda14cbcSMatt Macy zio_prop_t zp; 1653eda14cbcSMatt Macy zio_t *zio; 1654eda14cbcSMatt Macy list_t *list; 1655eda14cbcSMatt Macy dbuf_dirty_record_t *dr; 1656eda14cbcSMatt Macy int num_sublists; 1657eda14cbcSMatt Macy multilist_t *ml; 1658eda14cbcSMatt Macy blkptr_t *blkptr_copy = kmem_alloc(sizeof (*os->os_rootbp), KM_SLEEP); 1659eda14cbcSMatt Macy *blkptr_copy = *os->os_rootbp; 1660eda14cbcSMatt Macy 166133b8c039SMartin Matuska dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", (u_longlong_t)tx->tx_txg); 1662eda14cbcSMatt Macy 1663eda14cbcSMatt Macy ASSERT(dmu_tx_is_syncing(tx)); 1664eda14cbcSMatt Macy /* XXX the write_done callback should really give us the tx... */ 1665eda14cbcSMatt Macy os->os_synctx = tx; 1666eda14cbcSMatt Macy 1667eda14cbcSMatt Macy if (os->os_dsl_dataset == NULL) { 1668eda14cbcSMatt Macy /* 1669eda14cbcSMatt Macy * This is the MOS. If we have upgraded, 1670eda14cbcSMatt Macy * spa_max_replication() could change, so reset 1671eda14cbcSMatt Macy * os_copies here. 1672eda14cbcSMatt Macy */ 1673eda14cbcSMatt Macy os->os_copies = spa_max_replication(os->os_spa); 1674eda14cbcSMatt Macy } 1675eda14cbcSMatt Macy 1676eda14cbcSMatt Macy /* 1677eda14cbcSMatt Macy * Create the root block IO 1678eda14cbcSMatt Macy */ 1679eda14cbcSMatt Macy SET_BOOKMARK(&zb, os->os_dsl_dataset ? 1680eda14cbcSMatt Macy os->os_dsl_dataset->ds_object : DMU_META_OBJSET, 1681eda14cbcSMatt Macy ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 1682eda14cbcSMatt Macy arc_release(os->os_phys_buf, &os->os_phys_buf); 1683eda14cbcSMatt Macy 1684eda14cbcSMatt Macy dmu_write_policy(os, NULL, 0, 0, &zp); 1685eda14cbcSMatt Macy 1686eda14cbcSMatt Macy /* 1687eda14cbcSMatt Macy * If we are either claiming the ZIL or doing a raw receive, write 1688eda14cbcSMatt Macy * out the os_phys_buf raw. Neither of these actions will effect the 1689eda14cbcSMatt Macy * MAC at this point. 1690eda14cbcSMatt Macy */ 1691eda14cbcSMatt Macy if (os->os_raw_receive || 1692eda14cbcSMatt Macy os->os_next_write_raw[tx->tx_txg & TXG_MASK]) { 1693eda14cbcSMatt Macy ASSERT(os->os_encrypted); 1694eda14cbcSMatt Macy arc_convert_to_raw(os->os_phys_buf, 1695eda14cbcSMatt Macy os->os_dsl_dataset->ds_object, ZFS_HOST_BYTEORDER, 1696eda14cbcSMatt Macy DMU_OT_OBJSET, NULL, NULL, NULL); 1697eda14cbcSMatt Macy } 1698eda14cbcSMatt Macy 1699eda14cbcSMatt Macy zio = arc_write(pio, os->os_spa, tx->tx_txg, 170015f0b8c3SMartin Matuska blkptr_copy, os->os_phys_buf, B_FALSE, dmu_os_is_l2cacheable(os), 1701eda14cbcSMatt Macy &zp, dmu_objset_write_ready, NULL, NULL, dmu_objset_write_done, 1702eda14cbcSMatt Macy os, ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb); 1703eda14cbcSMatt Macy 1704eda14cbcSMatt Macy /* 1705eda14cbcSMatt Macy * Sync special dnodes - the parent IO for the sync is the root block 1706eda14cbcSMatt Macy */ 1707eda14cbcSMatt Macy DMU_META_DNODE(os)->dn_zio = zio; 1708eda14cbcSMatt Macy dnode_sync(DMU_META_DNODE(os), tx); 1709eda14cbcSMatt Macy 1710eda14cbcSMatt Macy os->os_phys->os_flags = os->os_flags; 1711eda14cbcSMatt Macy 1712eda14cbcSMatt Macy if (DMU_USERUSED_DNODE(os) && 1713eda14cbcSMatt Macy DMU_USERUSED_DNODE(os)->dn_type != DMU_OT_NONE) { 1714eda14cbcSMatt Macy DMU_USERUSED_DNODE(os)->dn_zio = zio; 1715eda14cbcSMatt Macy dnode_sync(DMU_USERUSED_DNODE(os), tx); 1716eda14cbcSMatt Macy DMU_GROUPUSED_DNODE(os)->dn_zio = zio; 1717eda14cbcSMatt Macy dnode_sync(DMU_GROUPUSED_DNODE(os), tx); 1718eda14cbcSMatt Macy } 1719eda14cbcSMatt Macy 1720eda14cbcSMatt Macy if (DMU_PROJECTUSED_DNODE(os) && 1721eda14cbcSMatt Macy DMU_PROJECTUSED_DNODE(os)->dn_type != DMU_OT_NONE) { 1722eda14cbcSMatt Macy DMU_PROJECTUSED_DNODE(os)->dn_zio = zio; 1723eda14cbcSMatt Macy dnode_sync(DMU_PROJECTUSED_DNODE(os), tx); 1724eda14cbcSMatt Macy } 1725eda14cbcSMatt Macy 1726eda14cbcSMatt Macy txgoff = tx->tx_txg & TXG_MASK; 1727eda14cbcSMatt Macy 1728eda14cbcSMatt Macy /* 1729eda14cbcSMatt Macy * We must create the list here because it uses the 1730eda14cbcSMatt Macy * dn_dirty_link[] of this txg. But it may already 1731eda14cbcSMatt Macy * exist because we call dsl_dataset_sync() twice per txg. 1732eda14cbcSMatt Macy */ 17333ff01b23SMartin Matuska if (os->os_synced_dnodes.ml_sublists == NULL) { 17343ff01b23SMartin Matuska multilist_create(&os->os_synced_dnodes, sizeof (dnode_t), 1735eda14cbcSMatt Macy offsetof(dnode_t, dn_dirty_link[txgoff]), 1736eda14cbcSMatt Macy dnode_multilist_index_func); 1737eda14cbcSMatt Macy } else { 17383ff01b23SMartin Matuska ASSERT3U(os->os_synced_dnodes.ml_offset, ==, 1739eda14cbcSMatt Macy offsetof(dnode_t, dn_dirty_link[txgoff])); 1740eda14cbcSMatt Macy } 1741eda14cbcSMatt Macy 17423ff01b23SMartin Matuska ml = &os->os_dirty_dnodes[txgoff]; 1743eda14cbcSMatt Macy num_sublists = multilist_get_num_sublists(ml); 1744eda14cbcSMatt Macy for (int i = 0; i < num_sublists; i++) { 1745eda14cbcSMatt Macy if (multilist_sublist_is_empty_idx(ml, i)) 1746eda14cbcSMatt Macy continue; 1747eda14cbcSMatt Macy sync_dnodes_arg_t *sda = kmem_alloc(sizeof (*sda), KM_SLEEP); 1748eda14cbcSMatt Macy sda->sda_list = ml; 1749eda14cbcSMatt Macy sda->sda_sublist_idx = i; 1750eda14cbcSMatt Macy sda->sda_tx = tx; 1751eda14cbcSMatt Macy (void) taskq_dispatch(dmu_objset_pool(os)->dp_sync_taskq, 1752eda14cbcSMatt Macy sync_dnodes_task, sda, 0); 1753eda14cbcSMatt Macy /* callback frees sda */ 1754eda14cbcSMatt Macy } 1755eda14cbcSMatt Macy taskq_wait(dmu_objset_pool(os)->dp_sync_taskq); 1756eda14cbcSMatt Macy 1757eda14cbcSMatt Macy list = &DMU_META_DNODE(os)->dn_dirty_records[txgoff]; 1758eda14cbcSMatt Macy while ((dr = list_head(list)) != NULL) { 1759eda14cbcSMatt Macy ASSERT0(dr->dr_dbuf->db_level); 1760eda14cbcSMatt Macy list_remove(list, dr); 1761eda14cbcSMatt Macy zio_nowait(dr->dr_zio); 1762eda14cbcSMatt Macy } 1763eda14cbcSMatt Macy 1764eda14cbcSMatt Macy /* Enable dnode backfill if enough objects have been freed. */ 1765eda14cbcSMatt Macy if (os->os_freed_dnodes >= dmu_rescan_dnode_threshold) { 1766eda14cbcSMatt Macy os->os_rescan_dnodes = B_TRUE; 1767eda14cbcSMatt Macy os->os_freed_dnodes = 0; 1768eda14cbcSMatt Macy } 1769eda14cbcSMatt Macy 1770eda14cbcSMatt Macy /* 1771eda14cbcSMatt Macy * Free intent log blocks up to this tx. 1772eda14cbcSMatt Macy */ 1773eda14cbcSMatt Macy zil_sync(os->os_zil, tx); 1774eda14cbcSMatt Macy os->os_phys->os_zil_header = os->os_zil_header; 1775eda14cbcSMatt Macy zio_nowait(zio); 1776eda14cbcSMatt Macy } 1777eda14cbcSMatt Macy 1778eda14cbcSMatt Macy boolean_t 1779eda14cbcSMatt Macy dmu_objset_is_dirty(objset_t *os, uint64_t txg) 1780eda14cbcSMatt Macy { 17813ff01b23SMartin Matuska return (!multilist_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK])); 1782eda14cbcSMatt Macy } 1783eda14cbcSMatt Macy 1784eda14cbcSMatt Macy static file_info_cb_t *file_cbs[DMU_OST_NUMTYPES]; 1785eda14cbcSMatt Macy 1786eda14cbcSMatt Macy void 1787eda14cbcSMatt Macy dmu_objset_register_type(dmu_objset_type_t ost, file_info_cb_t *cb) 1788eda14cbcSMatt Macy { 1789eda14cbcSMatt Macy file_cbs[ost] = cb; 1790eda14cbcSMatt Macy } 1791eda14cbcSMatt Macy 1792eda14cbcSMatt Macy int 1793eda14cbcSMatt Macy dmu_get_file_info(objset_t *os, dmu_object_type_t bonustype, const void *data, 1794eda14cbcSMatt Macy zfs_file_info_t *zfi) 1795eda14cbcSMatt Macy { 1796eda14cbcSMatt Macy file_info_cb_t *cb = file_cbs[os->os_phys->os_type]; 1797eda14cbcSMatt Macy if (cb == NULL) 1798eda14cbcSMatt Macy return (EINVAL); 1799eda14cbcSMatt Macy return (cb(bonustype, data, zfi)); 1800eda14cbcSMatt Macy } 1801eda14cbcSMatt Macy 1802eda14cbcSMatt Macy boolean_t 1803eda14cbcSMatt Macy dmu_objset_userused_enabled(objset_t *os) 1804eda14cbcSMatt Macy { 1805eda14cbcSMatt Macy return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE && 1806eda14cbcSMatt Macy file_cbs[os->os_phys->os_type] != NULL && 1807eda14cbcSMatt Macy DMU_USERUSED_DNODE(os) != NULL); 1808eda14cbcSMatt Macy } 1809eda14cbcSMatt Macy 1810eda14cbcSMatt Macy boolean_t 1811eda14cbcSMatt Macy dmu_objset_userobjused_enabled(objset_t *os) 1812eda14cbcSMatt Macy { 1813eda14cbcSMatt Macy return (dmu_objset_userused_enabled(os) && 1814eda14cbcSMatt Macy spa_feature_is_enabled(os->os_spa, SPA_FEATURE_USEROBJ_ACCOUNTING)); 1815eda14cbcSMatt Macy } 1816eda14cbcSMatt Macy 1817eda14cbcSMatt Macy boolean_t 1818eda14cbcSMatt Macy dmu_objset_projectquota_enabled(objset_t *os) 1819eda14cbcSMatt Macy { 1820eda14cbcSMatt Macy return (file_cbs[os->os_phys->os_type] != NULL && 1821eda14cbcSMatt Macy DMU_PROJECTUSED_DNODE(os) != NULL && 1822eda14cbcSMatt Macy spa_feature_is_enabled(os->os_spa, SPA_FEATURE_PROJECT_QUOTA)); 1823eda14cbcSMatt Macy } 1824eda14cbcSMatt Macy 1825eda14cbcSMatt Macy typedef struct userquota_node { 1826eda14cbcSMatt Macy /* must be in the first filed, see userquota_update_cache() */ 1827eda14cbcSMatt Macy char uqn_id[20 + DMU_OBJACCT_PREFIX_LEN]; 1828eda14cbcSMatt Macy int64_t uqn_delta; 1829eda14cbcSMatt Macy avl_node_t uqn_node; 1830eda14cbcSMatt Macy } userquota_node_t; 1831eda14cbcSMatt Macy 1832eda14cbcSMatt Macy typedef struct userquota_cache { 1833eda14cbcSMatt Macy avl_tree_t uqc_user_deltas; 1834eda14cbcSMatt Macy avl_tree_t uqc_group_deltas; 1835eda14cbcSMatt Macy avl_tree_t uqc_project_deltas; 1836eda14cbcSMatt Macy } userquota_cache_t; 1837eda14cbcSMatt Macy 1838eda14cbcSMatt Macy static int 1839eda14cbcSMatt Macy userquota_compare(const void *l, const void *r) 1840eda14cbcSMatt Macy { 1841eda14cbcSMatt Macy const userquota_node_t *luqn = l; 1842eda14cbcSMatt Macy const userquota_node_t *ruqn = r; 1843eda14cbcSMatt Macy int rv; 1844eda14cbcSMatt Macy 1845eda14cbcSMatt Macy /* 1846eda14cbcSMatt Macy * NB: can only access uqn_id because userquota_update_cache() doesn't 1847eda14cbcSMatt Macy * pass in an entire userquota_node_t. 1848eda14cbcSMatt Macy */ 1849eda14cbcSMatt Macy rv = strcmp(luqn->uqn_id, ruqn->uqn_id); 1850eda14cbcSMatt Macy 1851eda14cbcSMatt Macy return (TREE_ISIGN(rv)); 1852eda14cbcSMatt Macy } 1853eda14cbcSMatt Macy 1854eda14cbcSMatt Macy static void 1855eda14cbcSMatt Macy do_userquota_cacheflush(objset_t *os, userquota_cache_t *cache, dmu_tx_t *tx) 1856eda14cbcSMatt Macy { 1857eda14cbcSMatt Macy void *cookie; 1858eda14cbcSMatt Macy userquota_node_t *uqn; 1859eda14cbcSMatt Macy 1860eda14cbcSMatt Macy ASSERT(dmu_tx_is_syncing(tx)); 1861eda14cbcSMatt Macy 1862eda14cbcSMatt Macy cookie = NULL; 1863eda14cbcSMatt Macy while ((uqn = avl_destroy_nodes(&cache->uqc_user_deltas, 1864eda14cbcSMatt Macy &cookie)) != NULL) { 1865eda14cbcSMatt Macy /* 1866eda14cbcSMatt Macy * os_userused_lock protects against concurrent calls to 1867eda14cbcSMatt Macy * zap_increment_int(). It's needed because zap_increment_int() 1868eda14cbcSMatt Macy * is not thread-safe (i.e. not atomic). 1869eda14cbcSMatt Macy */ 1870eda14cbcSMatt Macy mutex_enter(&os->os_userused_lock); 1871eda14cbcSMatt Macy VERIFY0(zap_increment(os, DMU_USERUSED_OBJECT, 1872eda14cbcSMatt Macy uqn->uqn_id, uqn->uqn_delta, tx)); 1873eda14cbcSMatt Macy mutex_exit(&os->os_userused_lock); 1874eda14cbcSMatt Macy kmem_free(uqn, sizeof (*uqn)); 1875eda14cbcSMatt Macy } 1876eda14cbcSMatt Macy avl_destroy(&cache->uqc_user_deltas); 1877eda14cbcSMatt Macy 1878eda14cbcSMatt Macy cookie = NULL; 1879eda14cbcSMatt Macy while ((uqn = avl_destroy_nodes(&cache->uqc_group_deltas, 1880eda14cbcSMatt Macy &cookie)) != NULL) { 1881eda14cbcSMatt Macy mutex_enter(&os->os_userused_lock); 1882eda14cbcSMatt Macy VERIFY0(zap_increment(os, DMU_GROUPUSED_OBJECT, 1883eda14cbcSMatt Macy uqn->uqn_id, uqn->uqn_delta, tx)); 1884eda14cbcSMatt Macy mutex_exit(&os->os_userused_lock); 1885eda14cbcSMatt Macy kmem_free(uqn, sizeof (*uqn)); 1886eda14cbcSMatt Macy } 1887eda14cbcSMatt Macy avl_destroy(&cache->uqc_group_deltas); 1888eda14cbcSMatt Macy 1889eda14cbcSMatt Macy if (dmu_objset_projectquota_enabled(os)) { 1890eda14cbcSMatt Macy cookie = NULL; 1891eda14cbcSMatt Macy while ((uqn = avl_destroy_nodes(&cache->uqc_project_deltas, 1892eda14cbcSMatt Macy &cookie)) != NULL) { 1893eda14cbcSMatt Macy mutex_enter(&os->os_userused_lock); 1894eda14cbcSMatt Macy VERIFY0(zap_increment(os, DMU_PROJECTUSED_OBJECT, 1895eda14cbcSMatt Macy uqn->uqn_id, uqn->uqn_delta, tx)); 1896eda14cbcSMatt Macy mutex_exit(&os->os_userused_lock); 1897eda14cbcSMatt Macy kmem_free(uqn, sizeof (*uqn)); 1898eda14cbcSMatt Macy } 1899eda14cbcSMatt Macy avl_destroy(&cache->uqc_project_deltas); 1900eda14cbcSMatt Macy } 1901eda14cbcSMatt Macy } 1902eda14cbcSMatt Macy 1903eda14cbcSMatt Macy static void 1904eda14cbcSMatt Macy userquota_update_cache(avl_tree_t *avl, const char *id, int64_t delta) 1905eda14cbcSMatt Macy { 1906eda14cbcSMatt Macy userquota_node_t *uqn; 1907eda14cbcSMatt Macy avl_index_t idx; 1908eda14cbcSMatt Macy 1909eda14cbcSMatt Macy ASSERT(strlen(id) < sizeof (uqn->uqn_id)); 1910eda14cbcSMatt Macy /* 1911eda14cbcSMatt Macy * Use id directly for searching because uqn_id is the first field of 1912eda14cbcSMatt Macy * userquota_node_t and fields after uqn_id won't be accessed in 1913eda14cbcSMatt Macy * avl_find(). 1914eda14cbcSMatt Macy */ 1915eda14cbcSMatt Macy uqn = avl_find(avl, (const void *)id, &idx); 1916eda14cbcSMatt Macy if (uqn == NULL) { 1917eda14cbcSMatt Macy uqn = kmem_zalloc(sizeof (*uqn), KM_SLEEP); 1918eda14cbcSMatt Macy strlcpy(uqn->uqn_id, id, sizeof (uqn->uqn_id)); 1919eda14cbcSMatt Macy avl_insert(avl, uqn, idx); 1920eda14cbcSMatt Macy } 1921eda14cbcSMatt Macy uqn->uqn_delta += delta; 1922eda14cbcSMatt Macy } 1923eda14cbcSMatt Macy 1924eda14cbcSMatt Macy static void 1925eda14cbcSMatt Macy do_userquota_update(objset_t *os, userquota_cache_t *cache, uint64_t used, 1926eda14cbcSMatt Macy uint64_t flags, uint64_t user, uint64_t group, uint64_t project, 1927eda14cbcSMatt Macy boolean_t subtract) 1928eda14cbcSMatt Macy { 1929eda14cbcSMatt Macy if (flags & DNODE_FLAG_USERUSED_ACCOUNTED) { 1930eda14cbcSMatt Macy int64_t delta = DNODE_MIN_SIZE + used; 1931eda14cbcSMatt Macy char name[20]; 1932eda14cbcSMatt Macy 1933eda14cbcSMatt Macy if (subtract) 1934eda14cbcSMatt Macy delta = -delta; 1935eda14cbcSMatt Macy 1936eda14cbcSMatt Macy (void) snprintf(name, sizeof (name), "%llx", (longlong_t)user); 1937eda14cbcSMatt Macy userquota_update_cache(&cache->uqc_user_deltas, name, delta); 1938eda14cbcSMatt Macy 1939eda14cbcSMatt Macy (void) snprintf(name, sizeof (name), "%llx", (longlong_t)group); 1940eda14cbcSMatt Macy userquota_update_cache(&cache->uqc_group_deltas, name, delta); 1941eda14cbcSMatt Macy 1942eda14cbcSMatt Macy if (dmu_objset_projectquota_enabled(os)) { 1943eda14cbcSMatt Macy (void) snprintf(name, sizeof (name), "%llx", 1944eda14cbcSMatt Macy (longlong_t)project); 1945eda14cbcSMatt Macy userquota_update_cache(&cache->uqc_project_deltas, 1946eda14cbcSMatt Macy name, delta); 1947eda14cbcSMatt Macy } 1948eda14cbcSMatt Macy } 1949eda14cbcSMatt Macy } 1950eda14cbcSMatt Macy 1951eda14cbcSMatt Macy static void 1952eda14cbcSMatt Macy do_userobjquota_update(objset_t *os, userquota_cache_t *cache, uint64_t flags, 1953eda14cbcSMatt Macy uint64_t user, uint64_t group, uint64_t project, boolean_t subtract) 1954eda14cbcSMatt Macy { 1955eda14cbcSMatt Macy if (flags & DNODE_FLAG_USEROBJUSED_ACCOUNTED) { 1956eda14cbcSMatt Macy char name[20 + DMU_OBJACCT_PREFIX_LEN]; 1957eda14cbcSMatt Macy int delta = subtract ? -1 : 1; 1958eda14cbcSMatt Macy 1959eda14cbcSMatt Macy (void) snprintf(name, sizeof (name), DMU_OBJACCT_PREFIX "%llx", 1960eda14cbcSMatt Macy (longlong_t)user); 1961eda14cbcSMatt Macy userquota_update_cache(&cache->uqc_user_deltas, name, delta); 1962eda14cbcSMatt Macy 1963eda14cbcSMatt Macy (void) snprintf(name, sizeof (name), DMU_OBJACCT_PREFIX "%llx", 1964eda14cbcSMatt Macy (longlong_t)group); 1965eda14cbcSMatt Macy userquota_update_cache(&cache->uqc_group_deltas, name, delta); 1966eda14cbcSMatt Macy 1967eda14cbcSMatt Macy if (dmu_objset_projectquota_enabled(os)) { 1968eda14cbcSMatt Macy (void) snprintf(name, sizeof (name), 1969eda14cbcSMatt Macy DMU_OBJACCT_PREFIX "%llx", (longlong_t)project); 1970eda14cbcSMatt Macy userquota_update_cache(&cache->uqc_project_deltas, 1971eda14cbcSMatt Macy name, delta); 1972eda14cbcSMatt Macy } 1973eda14cbcSMatt Macy } 1974eda14cbcSMatt Macy } 1975eda14cbcSMatt Macy 1976eda14cbcSMatt Macy typedef struct userquota_updates_arg { 1977eda14cbcSMatt Macy objset_t *uua_os; 1978eda14cbcSMatt Macy int uua_sublist_idx; 1979eda14cbcSMatt Macy dmu_tx_t *uua_tx; 1980eda14cbcSMatt Macy } userquota_updates_arg_t; 1981eda14cbcSMatt Macy 1982eda14cbcSMatt Macy static void 1983eda14cbcSMatt Macy userquota_updates_task(void *arg) 1984eda14cbcSMatt Macy { 1985eda14cbcSMatt Macy userquota_updates_arg_t *uua = arg; 1986eda14cbcSMatt Macy objset_t *os = uua->uua_os; 1987eda14cbcSMatt Macy dmu_tx_t *tx = uua->uua_tx; 1988eda14cbcSMatt Macy dnode_t *dn; 1989eda14cbcSMatt Macy userquota_cache_t cache = { { 0 } }; 1990eda14cbcSMatt Macy 1991eda14cbcSMatt Macy multilist_sublist_t *list = 19923ff01b23SMartin Matuska multilist_sublist_lock(&os->os_synced_dnodes, uua->uua_sublist_idx); 1993eda14cbcSMatt Macy 1994eda14cbcSMatt Macy ASSERT(multilist_sublist_head(list) == NULL || 1995eda14cbcSMatt Macy dmu_objset_userused_enabled(os)); 1996eda14cbcSMatt Macy avl_create(&cache.uqc_user_deltas, userquota_compare, 1997eda14cbcSMatt Macy sizeof (userquota_node_t), offsetof(userquota_node_t, uqn_node)); 1998eda14cbcSMatt Macy avl_create(&cache.uqc_group_deltas, userquota_compare, 1999eda14cbcSMatt Macy sizeof (userquota_node_t), offsetof(userquota_node_t, uqn_node)); 2000eda14cbcSMatt Macy if (dmu_objset_projectquota_enabled(os)) 2001eda14cbcSMatt Macy avl_create(&cache.uqc_project_deltas, userquota_compare, 2002eda14cbcSMatt Macy sizeof (userquota_node_t), offsetof(userquota_node_t, 2003eda14cbcSMatt Macy uqn_node)); 2004eda14cbcSMatt Macy 2005eda14cbcSMatt Macy while ((dn = multilist_sublist_head(list)) != NULL) { 2006eda14cbcSMatt Macy int flags; 2007eda14cbcSMatt Macy ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object)); 2008eda14cbcSMatt Macy ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE || 2009eda14cbcSMatt Macy dn->dn_phys->dn_flags & 2010eda14cbcSMatt Macy DNODE_FLAG_USERUSED_ACCOUNTED); 2011eda14cbcSMatt Macy 2012eda14cbcSMatt Macy flags = dn->dn_id_flags; 2013eda14cbcSMatt Macy ASSERT(flags); 2014eda14cbcSMatt Macy if (flags & DN_ID_OLD_EXIST) { 2015eda14cbcSMatt Macy do_userquota_update(os, &cache, dn->dn_oldused, 2016eda14cbcSMatt Macy dn->dn_oldflags, dn->dn_olduid, dn->dn_oldgid, 2017eda14cbcSMatt Macy dn->dn_oldprojid, B_TRUE); 2018eda14cbcSMatt Macy do_userobjquota_update(os, &cache, dn->dn_oldflags, 2019eda14cbcSMatt Macy dn->dn_olduid, dn->dn_oldgid, 2020eda14cbcSMatt Macy dn->dn_oldprojid, B_TRUE); 2021eda14cbcSMatt Macy } 2022eda14cbcSMatt Macy if (flags & DN_ID_NEW_EXIST) { 2023eda14cbcSMatt Macy do_userquota_update(os, &cache, 2024eda14cbcSMatt Macy DN_USED_BYTES(dn->dn_phys), dn->dn_phys->dn_flags, 2025eda14cbcSMatt Macy dn->dn_newuid, dn->dn_newgid, 2026eda14cbcSMatt Macy dn->dn_newprojid, B_FALSE); 2027eda14cbcSMatt Macy do_userobjquota_update(os, &cache, 2028eda14cbcSMatt Macy dn->dn_phys->dn_flags, dn->dn_newuid, dn->dn_newgid, 2029eda14cbcSMatt Macy dn->dn_newprojid, B_FALSE); 2030eda14cbcSMatt Macy } 2031eda14cbcSMatt Macy 2032eda14cbcSMatt Macy mutex_enter(&dn->dn_mtx); 2033eda14cbcSMatt Macy dn->dn_oldused = 0; 2034eda14cbcSMatt Macy dn->dn_oldflags = 0; 2035eda14cbcSMatt Macy if (dn->dn_id_flags & DN_ID_NEW_EXIST) { 2036eda14cbcSMatt Macy dn->dn_olduid = dn->dn_newuid; 2037eda14cbcSMatt Macy dn->dn_oldgid = dn->dn_newgid; 2038eda14cbcSMatt Macy dn->dn_oldprojid = dn->dn_newprojid; 2039eda14cbcSMatt Macy dn->dn_id_flags |= DN_ID_OLD_EXIST; 2040eda14cbcSMatt Macy if (dn->dn_bonuslen == 0) 2041eda14cbcSMatt Macy dn->dn_id_flags |= DN_ID_CHKED_SPILL; 2042eda14cbcSMatt Macy else 2043eda14cbcSMatt Macy dn->dn_id_flags |= DN_ID_CHKED_BONUS; 2044eda14cbcSMatt Macy } 2045eda14cbcSMatt Macy dn->dn_id_flags &= ~(DN_ID_NEW_EXIST); 2046eda14cbcSMatt Macy mutex_exit(&dn->dn_mtx); 2047eda14cbcSMatt Macy 2048eda14cbcSMatt Macy multilist_sublist_remove(list, dn); 20493ff01b23SMartin Matuska dnode_rele(dn, &os->os_synced_dnodes); 2050eda14cbcSMatt Macy } 2051eda14cbcSMatt Macy do_userquota_cacheflush(os, &cache, tx); 2052eda14cbcSMatt Macy multilist_sublist_unlock(list); 2053eda14cbcSMatt Macy kmem_free(uua, sizeof (*uua)); 2054eda14cbcSMatt Macy } 2055eda14cbcSMatt Macy 20567877fdebSMatt Macy /* 20577877fdebSMatt Macy * Release dnode holds from dmu_objset_sync_dnodes(). When the dnode is being 20587877fdebSMatt Macy * synced (i.e. we have issued the zio's for blocks in the dnode), it can't be 20597877fdebSMatt Macy * evicted because the block containing the dnode can't be evicted until it is 20607877fdebSMatt Macy * written out. However, this hold is necessary to prevent the dnode_t from 20617877fdebSMatt Macy * being moved (via dnode_move()) while it's still referenced by 20627877fdebSMatt Macy * dbuf_dirty_record_t:dr_dnode. And dr_dnode is needed for 20637877fdebSMatt Macy * dirty_lightweight_leaf-type dirty records. 20647877fdebSMatt Macy * 20657877fdebSMatt Macy * If we are doing user-object accounting, the dnode_rele() happens from 20667877fdebSMatt Macy * userquota_updates_task() instead. 20677877fdebSMatt Macy */ 20687877fdebSMatt Macy static void 20697877fdebSMatt Macy dnode_rele_task(void *arg) 2070eda14cbcSMatt Macy { 20717877fdebSMatt Macy userquota_updates_arg_t *uua = arg; 20727877fdebSMatt Macy objset_t *os = uua->uua_os; 2073eda14cbcSMatt Macy 20747877fdebSMatt Macy multilist_sublist_t *list = 20753ff01b23SMartin Matuska multilist_sublist_lock(&os->os_synced_dnodes, uua->uua_sublist_idx); 20767877fdebSMatt Macy 20777877fdebSMatt Macy dnode_t *dn; 20787877fdebSMatt Macy while ((dn = multilist_sublist_head(list)) != NULL) { 20797877fdebSMatt Macy multilist_sublist_remove(list, dn); 20803ff01b23SMartin Matuska dnode_rele(dn, &os->os_synced_dnodes); 20817877fdebSMatt Macy } 20827877fdebSMatt Macy multilist_sublist_unlock(list); 20837877fdebSMatt Macy kmem_free(uua, sizeof (*uua)); 20847877fdebSMatt Macy } 20857877fdebSMatt Macy 20867877fdebSMatt Macy /* 20877877fdebSMatt Macy * Return TRUE if userquota updates are needed. 20887877fdebSMatt Macy */ 20897877fdebSMatt Macy static boolean_t 20907877fdebSMatt Macy dmu_objset_do_userquota_updates_prep(objset_t *os, dmu_tx_t *tx) 20917877fdebSMatt Macy { 2092eda14cbcSMatt Macy if (!dmu_objset_userused_enabled(os)) 20937877fdebSMatt Macy return (B_FALSE); 2094eda14cbcSMatt Macy 2095eda14cbcSMatt Macy /* 2096eda14cbcSMatt Macy * If this is a raw receive just return and handle accounting 2097eda14cbcSMatt Macy * later when we have the keys loaded. We also don't do user 2098eda14cbcSMatt Macy * accounting during claiming since the datasets are not owned 2099eda14cbcSMatt Macy * for the duration of claiming and this txg should only be 2100eda14cbcSMatt Macy * used for recovery. 2101eda14cbcSMatt Macy */ 2102eda14cbcSMatt Macy if (os->os_encrypted && dmu_objset_is_receiving(os)) 21037877fdebSMatt Macy return (B_FALSE); 2104eda14cbcSMatt Macy 2105eda14cbcSMatt Macy if (tx->tx_txg <= os->os_spa->spa_claim_max_txg) 21067877fdebSMatt Macy return (B_FALSE); 2107eda14cbcSMatt Macy 2108eda14cbcSMatt Macy /* Allocate the user/group/project used objects if necessary. */ 2109eda14cbcSMatt Macy if (DMU_USERUSED_DNODE(os)->dn_type == DMU_OT_NONE) { 2110eda14cbcSMatt Macy VERIFY0(zap_create_claim(os, 2111eda14cbcSMatt Macy DMU_USERUSED_OBJECT, 2112eda14cbcSMatt Macy DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 2113eda14cbcSMatt Macy VERIFY0(zap_create_claim(os, 2114eda14cbcSMatt Macy DMU_GROUPUSED_OBJECT, 2115eda14cbcSMatt Macy DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 2116eda14cbcSMatt Macy } 2117eda14cbcSMatt Macy 2118eda14cbcSMatt Macy if (dmu_objset_projectquota_enabled(os) && 2119eda14cbcSMatt Macy DMU_PROJECTUSED_DNODE(os)->dn_type == DMU_OT_NONE) { 2120eda14cbcSMatt Macy VERIFY0(zap_create_claim(os, DMU_PROJECTUSED_OBJECT, 2121eda14cbcSMatt Macy DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 2122eda14cbcSMatt Macy } 21237877fdebSMatt Macy return (B_TRUE); 21247877fdebSMatt Macy } 2125eda14cbcSMatt Macy 21267877fdebSMatt Macy /* 21277877fdebSMatt Macy * Dispatch taskq tasks to dp_sync_taskq to update the user accounting, and 21287877fdebSMatt Macy * also release the holds on the dnodes from dmu_objset_sync_dnodes(). 21297877fdebSMatt Macy * The caller must taskq_wait(dp_sync_taskq). 21307877fdebSMatt Macy */ 21317877fdebSMatt Macy void 21327877fdebSMatt Macy dmu_objset_sync_done(objset_t *os, dmu_tx_t *tx) 21337877fdebSMatt Macy { 21347877fdebSMatt Macy boolean_t need_userquota = dmu_objset_do_userquota_updates_prep(os, tx); 21357877fdebSMatt Macy 21363ff01b23SMartin Matuska int num_sublists = multilist_get_num_sublists(&os->os_synced_dnodes); 2137eda14cbcSMatt Macy for (int i = 0; i < num_sublists; i++) { 2138eda14cbcSMatt Macy userquota_updates_arg_t *uua = 2139eda14cbcSMatt Macy kmem_alloc(sizeof (*uua), KM_SLEEP); 2140eda14cbcSMatt Macy uua->uua_os = os; 2141eda14cbcSMatt Macy uua->uua_sublist_idx = i; 2142eda14cbcSMatt Macy uua->uua_tx = tx; 21437877fdebSMatt Macy 21447877fdebSMatt Macy /* 21457877fdebSMatt Macy * If we don't need to update userquotas, use 21467877fdebSMatt Macy * dnode_rele_task() to call dnode_rele() 21477877fdebSMatt Macy */ 2148eda14cbcSMatt Macy (void) taskq_dispatch(dmu_objset_pool(os)->dp_sync_taskq, 21497877fdebSMatt Macy need_userquota ? userquota_updates_task : dnode_rele_task, 21507877fdebSMatt Macy uua, 0); 2151eda14cbcSMatt Macy /* callback frees uua */ 2152eda14cbcSMatt Macy } 2153eda14cbcSMatt Macy } 2154eda14cbcSMatt Macy 21557877fdebSMatt Macy 2156eda14cbcSMatt Macy /* 2157eda14cbcSMatt Macy * Returns a pointer to data to find uid/gid from 2158eda14cbcSMatt Macy * 2159eda14cbcSMatt Macy * If a dirty record for transaction group that is syncing can't 2160eda14cbcSMatt Macy * be found then NULL is returned. In the NULL case it is assumed 2161eda14cbcSMatt Macy * the uid/gid aren't changing. 2162eda14cbcSMatt Macy */ 2163eda14cbcSMatt Macy static void * 2164eda14cbcSMatt Macy dmu_objset_userquota_find_data(dmu_buf_impl_t *db, dmu_tx_t *tx) 2165eda14cbcSMatt Macy { 2166eda14cbcSMatt Macy dbuf_dirty_record_t *dr; 2167eda14cbcSMatt Macy void *data; 2168eda14cbcSMatt Macy 2169eda14cbcSMatt Macy if (db->db_dirtycnt == 0) 2170eda14cbcSMatt Macy return (db->db.db_data); /* Nothing is changing */ 2171eda14cbcSMatt Macy 2172eda14cbcSMatt Macy dr = dbuf_find_dirty_eq(db, tx->tx_txg); 2173eda14cbcSMatt Macy 2174eda14cbcSMatt Macy if (dr == NULL) { 2175eda14cbcSMatt Macy data = NULL; 2176eda14cbcSMatt Macy } else { 21777877fdebSMatt Macy if (dr->dr_dnode->dn_bonuslen == 0 && 2178eda14cbcSMatt Macy dr->dr_dbuf->db_blkid == DMU_SPILL_BLKID) 2179eda14cbcSMatt Macy data = dr->dt.dl.dr_data->b_data; 2180eda14cbcSMatt Macy else 2181eda14cbcSMatt Macy data = dr->dt.dl.dr_data; 2182eda14cbcSMatt Macy } 2183eda14cbcSMatt Macy 2184eda14cbcSMatt Macy return (data); 2185eda14cbcSMatt Macy } 2186eda14cbcSMatt Macy 2187eda14cbcSMatt Macy void 2188eda14cbcSMatt Macy dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx) 2189eda14cbcSMatt Macy { 2190eda14cbcSMatt Macy objset_t *os = dn->dn_objset; 2191eda14cbcSMatt Macy void *data = NULL; 2192eda14cbcSMatt Macy dmu_buf_impl_t *db = NULL; 2193eda14cbcSMatt Macy int flags = dn->dn_id_flags; 2194eda14cbcSMatt Macy int error; 2195eda14cbcSMatt Macy boolean_t have_spill = B_FALSE; 2196eda14cbcSMatt Macy 2197eda14cbcSMatt Macy if (!dmu_objset_userused_enabled(dn->dn_objset)) 2198eda14cbcSMatt Macy return; 2199eda14cbcSMatt Macy 2200eda14cbcSMatt Macy /* 2201eda14cbcSMatt Macy * Raw receives introduce a problem with user accounting. Raw 2202eda14cbcSMatt Macy * receives cannot update the user accounting info because the 2203eda14cbcSMatt Macy * user ids and the sizes are encrypted. To guarantee that we 2204eda14cbcSMatt Macy * never end up with bad user accounting, we simply disable it 2205eda14cbcSMatt Macy * during raw receives. We also disable this for normal receives 2206eda14cbcSMatt Macy * so that an incremental raw receive may be done on top of an 2207eda14cbcSMatt Macy * existing non-raw receive. 2208eda14cbcSMatt Macy */ 2209eda14cbcSMatt Macy if (os->os_encrypted && dmu_objset_is_receiving(os)) 2210eda14cbcSMatt Macy return; 2211eda14cbcSMatt Macy 2212eda14cbcSMatt Macy if (before && (flags & (DN_ID_CHKED_BONUS|DN_ID_OLD_EXIST| 2213eda14cbcSMatt Macy DN_ID_CHKED_SPILL))) 2214eda14cbcSMatt Macy return; 2215eda14cbcSMatt Macy 2216eda14cbcSMatt Macy if (before && dn->dn_bonuslen != 0) 2217eda14cbcSMatt Macy data = DN_BONUS(dn->dn_phys); 2218eda14cbcSMatt Macy else if (!before && dn->dn_bonuslen != 0) { 2219eda14cbcSMatt Macy if (dn->dn_bonus) { 2220eda14cbcSMatt Macy db = dn->dn_bonus; 2221eda14cbcSMatt Macy mutex_enter(&db->db_mtx); 2222eda14cbcSMatt Macy data = dmu_objset_userquota_find_data(db, tx); 2223eda14cbcSMatt Macy } else { 2224eda14cbcSMatt Macy data = DN_BONUS(dn->dn_phys); 2225eda14cbcSMatt Macy } 2226eda14cbcSMatt Macy } else if (dn->dn_bonuslen == 0 && dn->dn_bonustype == DMU_OT_SA) { 2227eda14cbcSMatt Macy int rf = 0; 2228eda14cbcSMatt Macy 2229eda14cbcSMatt Macy if (RW_WRITE_HELD(&dn->dn_struct_rwlock)) 2230eda14cbcSMatt Macy rf |= DB_RF_HAVESTRUCT; 2231eda14cbcSMatt Macy error = dmu_spill_hold_by_dnode(dn, 2232eda14cbcSMatt Macy rf | DB_RF_MUST_SUCCEED, 2233eda14cbcSMatt Macy FTAG, (dmu_buf_t **)&db); 2234eda14cbcSMatt Macy ASSERT(error == 0); 2235eda14cbcSMatt Macy mutex_enter(&db->db_mtx); 2236eda14cbcSMatt Macy data = (before) ? db->db.db_data : 2237eda14cbcSMatt Macy dmu_objset_userquota_find_data(db, tx); 2238eda14cbcSMatt Macy have_spill = B_TRUE; 2239eda14cbcSMatt Macy } else { 2240eda14cbcSMatt Macy mutex_enter(&dn->dn_mtx); 2241eda14cbcSMatt Macy dn->dn_id_flags |= DN_ID_CHKED_BONUS; 2242eda14cbcSMatt Macy mutex_exit(&dn->dn_mtx); 2243eda14cbcSMatt Macy return; 2244eda14cbcSMatt Macy } 2245eda14cbcSMatt Macy 2246eda14cbcSMatt Macy /* 2247eda14cbcSMatt Macy * Must always call the callback in case the object 2248eda14cbcSMatt Macy * type has changed and that type isn't an object type to track 2249eda14cbcSMatt Macy */ 2250eda14cbcSMatt Macy zfs_file_info_t zfi; 2251eda14cbcSMatt Macy error = file_cbs[os->os_phys->os_type](dn->dn_bonustype, data, &zfi); 2252eda14cbcSMatt Macy 2253eda14cbcSMatt Macy if (before) { 2254eda14cbcSMatt Macy ASSERT(data); 2255eda14cbcSMatt Macy dn->dn_olduid = zfi.zfi_user; 2256eda14cbcSMatt Macy dn->dn_oldgid = zfi.zfi_group; 2257eda14cbcSMatt Macy dn->dn_oldprojid = zfi.zfi_project; 2258eda14cbcSMatt Macy } else if (data) { 2259eda14cbcSMatt Macy dn->dn_newuid = zfi.zfi_user; 2260eda14cbcSMatt Macy dn->dn_newgid = zfi.zfi_group; 2261eda14cbcSMatt Macy dn->dn_newprojid = zfi.zfi_project; 2262eda14cbcSMatt Macy } 2263eda14cbcSMatt Macy 2264eda14cbcSMatt Macy /* 2265eda14cbcSMatt Macy * Preserve existing uid/gid when the callback can't determine 2266eda14cbcSMatt Macy * what the new uid/gid are and the callback returned EEXIST. 2267eda14cbcSMatt Macy * The EEXIST error tells us to just use the existing uid/gid. 2268eda14cbcSMatt Macy * If we don't know what the old values are then just assign 2269eda14cbcSMatt Macy * them to 0, since that is a new file being created. 2270eda14cbcSMatt Macy */ 2271eda14cbcSMatt Macy if (!before && data == NULL && error == EEXIST) { 2272eda14cbcSMatt Macy if (flags & DN_ID_OLD_EXIST) { 2273eda14cbcSMatt Macy dn->dn_newuid = dn->dn_olduid; 2274eda14cbcSMatt Macy dn->dn_newgid = dn->dn_oldgid; 2275eda14cbcSMatt Macy dn->dn_newprojid = dn->dn_oldprojid; 2276eda14cbcSMatt Macy } else { 2277eda14cbcSMatt Macy dn->dn_newuid = 0; 2278eda14cbcSMatt Macy dn->dn_newgid = 0; 2279eda14cbcSMatt Macy dn->dn_newprojid = ZFS_DEFAULT_PROJID; 2280eda14cbcSMatt Macy } 2281eda14cbcSMatt Macy error = 0; 2282eda14cbcSMatt Macy } 2283eda14cbcSMatt Macy 2284eda14cbcSMatt Macy if (db) 2285eda14cbcSMatt Macy mutex_exit(&db->db_mtx); 2286eda14cbcSMatt Macy 2287eda14cbcSMatt Macy mutex_enter(&dn->dn_mtx); 2288eda14cbcSMatt Macy if (error == 0 && before) 2289eda14cbcSMatt Macy dn->dn_id_flags |= DN_ID_OLD_EXIST; 2290eda14cbcSMatt Macy if (error == 0 && !before) 2291eda14cbcSMatt Macy dn->dn_id_flags |= DN_ID_NEW_EXIST; 2292eda14cbcSMatt Macy 2293eda14cbcSMatt Macy if (have_spill) { 2294eda14cbcSMatt Macy dn->dn_id_flags |= DN_ID_CHKED_SPILL; 2295eda14cbcSMatt Macy } else { 2296eda14cbcSMatt Macy dn->dn_id_flags |= DN_ID_CHKED_BONUS; 2297eda14cbcSMatt Macy } 2298eda14cbcSMatt Macy mutex_exit(&dn->dn_mtx); 2299eda14cbcSMatt Macy if (have_spill) 2300eda14cbcSMatt Macy dmu_buf_rele((dmu_buf_t *)db, FTAG); 2301eda14cbcSMatt Macy } 2302eda14cbcSMatt Macy 2303eda14cbcSMatt Macy boolean_t 2304eda14cbcSMatt Macy dmu_objset_userspace_present(objset_t *os) 2305eda14cbcSMatt Macy { 2306eda14cbcSMatt Macy return (os->os_phys->os_flags & 2307eda14cbcSMatt Macy OBJSET_FLAG_USERACCOUNTING_COMPLETE); 2308eda14cbcSMatt Macy } 2309eda14cbcSMatt Macy 2310eda14cbcSMatt Macy boolean_t 2311eda14cbcSMatt Macy dmu_objset_userobjspace_present(objset_t *os) 2312eda14cbcSMatt Macy { 2313eda14cbcSMatt Macy return (os->os_phys->os_flags & 2314eda14cbcSMatt Macy OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE); 2315eda14cbcSMatt Macy } 2316eda14cbcSMatt Macy 2317eda14cbcSMatt Macy boolean_t 2318eda14cbcSMatt Macy dmu_objset_projectquota_present(objset_t *os) 2319eda14cbcSMatt Macy { 2320eda14cbcSMatt Macy return (os->os_phys->os_flags & 2321eda14cbcSMatt Macy OBJSET_FLAG_PROJECTQUOTA_COMPLETE); 2322eda14cbcSMatt Macy } 2323eda14cbcSMatt Macy 2324eda14cbcSMatt Macy static int 2325eda14cbcSMatt Macy dmu_objset_space_upgrade(objset_t *os) 2326eda14cbcSMatt Macy { 2327eda14cbcSMatt Macy uint64_t obj; 2328eda14cbcSMatt Macy int err = 0; 2329eda14cbcSMatt Macy 2330eda14cbcSMatt Macy /* 2331eda14cbcSMatt Macy * We simply need to mark every object dirty, so that it will be 2332eda14cbcSMatt Macy * synced out and now accounted. If this is called 2333eda14cbcSMatt Macy * concurrently, or if we already did some work before crashing, 2334eda14cbcSMatt Macy * that's fine, since we track each object's accounted state 2335eda14cbcSMatt Macy * independently. 2336eda14cbcSMatt Macy */ 2337eda14cbcSMatt Macy 2338eda14cbcSMatt Macy for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) { 2339eda14cbcSMatt Macy dmu_tx_t *tx; 2340eda14cbcSMatt Macy dmu_buf_t *db; 2341eda14cbcSMatt Macy int objerr; 2342eda14cbcSMatt Macy 2343eda14cbcSMatt Macy mutex_enter(&os->os_upgrade_lock); 2344eda14cbcSMatt Macy if (os->os_upgrade_exit) 2345eda14cbcSMatt Macy err = SET_ERROR(EINTR); 2346eda14cbcSMatt Macy mutex_exit(&os->os_upgrade_lock); 2347eda14cbcSMatt Macy if (err != 0) 2348eda14cbcSMatt Macy return (err); 2349eda14cbcSMatt Macy 2350eda14cbcSMatt Macy if (issig(JUSTLOOKING) && issig(FORREAL)) 2351eda14cbcSMatt Macy return (SET_ERROR(EINTR)); 2352eda14cbcSMatt Macy 2353eda14cbcSMatt Macy objerr = dmu_bonus_hold(os, obj, FTAG, &db); 2354eda14cbcSMatt Macy if (objerr != 0) 2355eda14cbcSMatt Macy continue; 2356eda14cbcSMatt Macy tx = dmu_tx_create(os); 2357eda14cbcSMatt Macy dmu_tx_hold_bonus(tx, obj); 2358eda14cbcSMatt Macy objerr = dmu_tx_assign(tx, TXG_WAIT); 2359eda14cbcSMatt Macy if (objerr != 0) { 2360eda14cbcSMatt Macy dmu_buf_rele(db, FTAG); 2361eda14cbcSMatt Macy dmu_tx_abort(tx); 2362eda14cbcSMatt Macy continue; 2363eda14cbcSMatt Macy } 2364eda14cbcSMatt Macy dmu_buf_will_dirty(db, tx); 2365eda14cbcSMatt Macy dmu_buf_rele(db, FTAG); 2366eda14cbcSMatt Macy dmu_tx_commit(tx); 2367eda14cbcSMatt Macy } 2368eda14cbcSMatt Macy return (0); 2369eda14cbcSMatt Macy } 2370eda14cbcSMatt Macy 23717877fdebSMatt Macy static int 23727877fdebSMatt Macy dmu_objset_userspace_upgrade_cb(objset_t *os) 2373eda14cbcSMatt Macy { 2374eda14cbcSMatt Macy int err = 0; 2375eda14cbcSMatt Macy 2376eda14cbcSMatt Macy if (dmu_objset_userspace_present(os)) 2377eda14cbcSMatt Macy return (0); 2378eda14cbcSMatt Macy if (dmu_objset_is_snapshot(os)) 2379eda14cbcSMatt Macy return (SET_ERROR(EINVAL)); 2380eda14cbcSMatt Macy if (!dmu_objset_userused_enabled(os)) 2381eda14cbcSMatt Macy return (SET_ERROR(ENOTSUP)); 2382eda14cbcSMatt Macy 2383eda14cbcSMatt Macy err = dmu_objset_space_upgrade(os); 2384eda14cbcSMatt Macy if (err) 2385eda14cbcSMatt Macy return (err); 2386eda14cbcSMatt Macy 2387eda14cbcSMatt Macy os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 2388eda14cbcSMatt Macy txg_wait_synced(dmu_objset_pool(os), 0); 2389eda14cbcSMatt Macy return (0); 2390eda14cbcSMatt Macy } 2391eda14cbcSMatt Macy 23927877fdebSMatt Macy void 23937877fdebSMatt Macy dmu_objset_userspace_upgrade(objset_t *os) 23947877fdebSMatt Macy { 23957877fdebSMatt Macy dmu_objset_upgrade(os, dmu_objset_userspace_upgrade_cb); 23967877fdebSMatt Macy } 23977877fdebSMatt Macy 2398eda14cbcSMatt Macy static int 2399eda14cbcSMatt Macy dmu_objset_id_quota_upgrade_cb(objset_t *os) 2400eda14cbcSMatt Macy { 2401eda14cbcSMatt Macy int err = 0; 2402eda14cbcSMatt Macy 2403eda14cbcSMatt Macy if (dmu_objset_userobjspace_present(os) && 2404eda14cbcSMatt Macy dmu_objset_projectquota_present(os)) 2405eda14cbcSMatt Macy return (0); 2406eda14cbcSMatt Macy if (dmu_objset_is_snapshot(os)) 2407eda14cbcSMatt Macy return (SET_ERROR(EINVAL)); 24087877fdebSMatt Macy if (!dmu_objset_userused_enabled(os)) 2409eda14cbcSMatt Macy return (SET_ERROR(ENOTSUP)); 2410eda14cbcSMatt Macy if (!dmu_objset_projectquota_enabled(os) && 2411eda14cbcSMatt Macy dmu_objset_userobjspace_present(os)) 2412eda14cbcSMatt Macy return (SET_ERROR(ENOTSUP)); 2413eda14cbcSMatt Macy 2414*2a58b312SMartin Matuska if (dmu_objset_userobjused_enabled(os)) 2415*2a58b312SMartin Matuska dmu_objset_ds(os)->ds_feature_activation[ 2416*2a58b312SMartin Matuska SPA_FEATURE_USEROBJ_ACCOUNTING] = (void *)B_TRUE; 2417*2a58b312SMartin Matuska if (dmu_objset_projectquota_enabled(os)) 2418*2a58b312SMartin Matuska dmu_objset_ds(os)->ds_feature_activation[ 2419*2a58b312SMartin Matuska SPA_FEATURE_PROJECT_QUOTA] = (void *)B_TRUE; 2420*2a58b312SMartin Matuska 2421eda14cbcSMatt Macy err = dmu_objset_space_upgrade(os); 2422eda14cbcSMatt Macy if (err) 2423eda14cbcSMatt Macy return (err); 2424eda14cbcSMatt Macy 24257877fdebSMatt Macy os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 24267877fdebSMatt Macy if (dmu_objset_userobjused_enabled(os)) 2427eda14cbcSMatt Macy os->os_flags |= OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE; 2428eda14cbcSMatt Macy if (dmu_objset_projectquota_enabled(os)) 2429eda14cbcSMatt Macy os->os_flags |= OBJSET_FLAG_PROJECTQUOTA_COMPLETE; 2430eda14cbcSMatt Macy 2431eda14cbcSMatt Macy txg_wait_synced(dmu_objset_pool(os), 0); 2432eda14cbcSMatt Macy return (0); 2433eda14cbcSMatt Macy } 2434eda14cbcSMatt Macy 2435eda14cbcSMatt Macy void 2436eda14cbcSMatt Macy dmu_objset_id_quota_upgrade(objset_t *os) 2437eda14cbcSMatt Macy { 2438eda14cbcSMatt Macy dmu_objset_upgrade(os, dmu_objset_id_quota_upgrade_cb); 2439eda14cbcSMatt Macy } 2440eda14cbcSMatt Macy 2441eda14cbcSMatt Macy boolean_t 2442eda14cbcSMatt Macy dmu_objset_userobjspace_upgradable(objset_t *os) 2443eda14cbcSMatt Macy { 2444eda14cbcSMatt Macy return (dmu_objset_type(os) == DMU_OST_ZFS && 2445eda14cbcSMatt Macy !dmu_objset_is_snapshot(os) && 2446eda14cbcSMatt Macy dmu_objset_userobjused_enabled(os) && 2447eda14cbcSMatt Macy !dmu_objset_userobjspace_present(os) && 2448eda14cbcSMatt Macy spa_writeable(dmu_objset_spa(os))); 2449eda14cbcSMatt Macy } 2450eda14cbcSMatt Macy 2451eda14cbcSMatt Macy boolean_t 2452eda14cbcSMatt Macy dmu_objset_projectquota_upgradable(objset_t *os) 2453eda14cbcSMatt Macy { 2454eda14cbcSMatt Macy return (dmu_objset_type(os) == DMU_OST_ZFS && 2455eda14cbcSMatt Macy !dmu_objset_is_snapshot(os) && 2456eda14cbcSMatt Macy dmu_objset_projectquota_enabled(os) && 2457eda14cbcSMatt Macy !dmu_objset_projectquota_present(os) && 2458eda14cbcSMatt Macy spa_writeable(dmu_objset_spa(os))); 2459eda14cbcSMatt Macy } 2460eda14cbcSMatt Macy 2461eda14cbcSMatt Macy void 2462eda14cbcSMatt Macy dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, 2463eda14cbcSMatt Macy uint64_t *usedobjsp, uint64_t *availobjsp) 2464eda14cbcSMatt Macy { 2465eda14cbcSMatt Macy dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp, 2466eda14cbcSMatt Macy usedobjsp, availobjsp); 2467eda14cbcSMatt Macy } 2468eda14cbcSMatt Macy 2469eda14cbcSMatt Macy uint64_t 2470eda14cbcSMatt Macy dmu_objset_fsid_guid(objset_t *os) 2471eda14cbcSMatt Macy { 2472eda14cbcSMatt Macy return (dsl_dataset_fsid_guid(os->os_dsl_dataset)); 2473eda14cbcSMatt Macy } 2474eda14cbcSMatt Macy 2475eda14cbcSMatt Macy void 2476eda14cbcSMatt Macy dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat) 2477eda14cbcSMatt Macy { 2478eda14cbcSMatt Macy stat->dds_type = os->os_phys->os_type; 2479eda14cbcSMatt Macy if (os->os_dsl_dataset) 2480eda14cbcSMatt Macy dsl_dataset_fast_stat(os->os_dsl_dataset, stat); 2481eda14cbcSMatt Macy } 2482eda14cbcSMatt Macy 2483eda14cbcSMatt Macy void 2484eda14cbcSMatt Macy dmu_objset_stats(objset_t *os, nvlist_t *nv) 2485eda14cbcSMatt Macy { 2486eda14cbcSMatt Macy ASSERT(os->os_dsl_dataset || 2487eda14cbcSMatt Macy os->os_phys->os_type == DMU_OST_META); 2488eda14cbcSMatt Macy 2489eda14cbcSMatt Macy if (os->os_dsl_dataset != NULL) 2490eda14cbcSMatt Macy dsl_dataset_stats(os->os_dsl_dataset, nv); 2491eda14cbcSMatt Macy 2492eda14cbcSMatt Macy dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE, 2493eda14cbcSMatt Macy os->os_phys->os_type); 2494eda14cbcSMatt Macy dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING, 2495eda14cbcSMatt Macy dmu_objset_userspace_present(os)); 2496eda14cbcSMatt Macy } 2497eda14cbcSMatt Macy 2498eda14cbcSMatt Macy int 2499eda14cbcSMatt Macy dmu_objset_is_snapshot(objset_t *os) 2500eda14cbcSMatt Macy { 2501eda14cbcSMatt Macy if (os->os_dsl_dataset != NULL) 2502eda14cbcSMatt Macy return (os->os_dsl_dataset->ds_is_snapshot); 2503eda14cbcSMatt Macy else 2504eda14cbcSMatt Macy return (B_FALSE); 2505eda14cbcSMatt Macy } 2506eda14cbcSMatt Macy 2507eda14cbcSMatt Macy int 2508180f8225SMatt Macy dmu_snapshot_realname(objset_t *os, const char *name, char *real, int maxlen, 2509eda14cbcSMatt Macy boolean_t *conflict) 2510eda14cbcSMatt Macy { 2511eda14cbcSMatt Macy dsl_dataset_t *ds = os->os_dsl_dataset; 2512eda14cbcSMatt Macy uint64_t ignored; 2513eda14cbcSMatt Macy 2514eda14cbcSMatt Macy if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0) 2515eda14cbcSMatt Macy return (SET_ERROR(ENOENT)); 2516eda14cbcSMatt Macy 2517eda14cbcSMatt Macy return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset, 2518eda14cbcSMatt Macy dsl_dataset_phys(ds)->ds_snapnames_zapobj, name, 8, 1, &ignored, 2519eda14cbcSMatt Macy MT_NORMALIZE, real, maxlen, conflict)); 2520eda14cbcSMatt Macy } 2521eda14cbcSMatt Macy 2522eda14cbcSMatt Macy int 2523eda14cbcSMatt Macy dmu_snapshot_list_next(objset_t *os, int namelen, char *name, 2524eda14cbcSMatt Macy uint64_t *idp, uint64_t *offp, boolean_t *case_conflict) 2525eda14cbcSMatt Macy { 2526eda14cbcSMatt Macy dsl_dataset_t *ds = os->os_dsl_dataset; 2527eda14cbcSMatt Macy zap_cursor_t cursor; 2528eda14cbcSMatt Macy zap_attribute_t attr; 2529eda14cbcSMatt Macy 2530eda14cbcSMatt Macy ASSERT(dsl_pool_config_held(dmu_objset_pool(os))); 2531eda14cbcSMatt Macy 2532eda14cbcSMatt Macy if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0) 2533eda14cbcSMatt Macy return (SET_ERROR(ENOENT)); 2534eda14cbcSMatt Macy 2535eda14cbcSMatt Macy zap_cursor_init_serialized(&cursor, 2536eda14cbcSMatt Macy ds->ds_dir->dd_pool->dp_meta_objset, 2537eda14cbcSMatt Macy dsl_dataset_phys(ds)->ds_snapnames_zapobj, *offp); 2538eda14cbcSMatt Macy 2539eda14cbcSMatt Macy if (zap_cursor_retrieve(&cursor, &attr) != 0) { 2540eda14cbcSMatt Macy zap_cursor_fini(&cursor); 2541eda14cbcSMatt Macy return (SET_ERROR(ENOENT)); 2542eda14cbcSMatt Macy } 2543eda14cbcSMatt Macy 2544eda14cbcSMatt Macy if (strlen(attr.za_name) + 1 > namelen) { 2545eda14cbcSMatt Macy zap_cursor_fini(&cursor); 2546eda14cbcSMatt Macy return (SET_ERROR(ENAMETOOLONG)); 2547eda14cbcSMatt Macy } 2548eda14cbcSMatt Macy 2549eda14cbcSMatt Macy (void) strlcpy(name, attr.za_name, namelen); 2550eda14cbcSMatt Macy if (idp) 2551eda14cbcSMatt Macy *idp = attr.za_first_integer; 2552eda14cbcSMatt Macy if (case_conflict) 2553eda14cbcSMatt Macy *case_conflict = attr.za_normalization_conflict; 2554eda14cbcSMatt Macy zap_cursor_advance(&cursor); 2555eda14cbcSMatt Macy *offp = zap_cursor_serialize(&cursor); 2556eda14cbcSMatt Macy zap_cursor_fini(&cursor); 2557eda14cbcSMatt Macy 2558eda14cbcSMatt Macy return (0); 2559eda14cbcSMatt Macy } 2560eda14cbcSMatt Macy 2561eda14cbcSMatt Macy int 2562eda14cbcSMatt Macy dmu_snapshot_lookup(objset_t *os, const char *name, uint64_t *value) 2563eda14cbcSMatt Macy { 2564eda14cbcSMatt Macy return (dsl_dataset_snap_lookup(os->os_dsl_dataset, name, value)); 2565eda14cbcSMatt Macy } 2566eda14cbcSMatt Macy 2567eda14cbcSMatt Macy int 2568eda14cbcSMatt Macy dmu_dir_list_next(objset_t *os, int namelen, char *name, 2569eda14cbcSMatt Macy uint64_t *idp, uint64_t *offp) 2570eda14cbcSMatt Macy { 2571eda14cbcSMatt Macy dsl_dir_t *dd = os->os_dsl_dataset->ds_dir; 2572eda14cbcSMatt Macy zap_cursor_t cursor; 2573eda14cbcSMatt Macy zap_attribute_t attr; 2574eda14cbcSMatt Macy 2575eda14cbcSMatt Macy /* there is no next dir on a snapshot! */ 2576eda14cbcSMatt Macy if (os->os_dsl_dataset->ds_object != 2577eda14cbcSMatt Macy dsl_dir_phys(dd)->dd_head_dataset_obj) 2578eda14cbcSMatt Macy return (SET_ERROR(ENOENT)); 2579eda14cbcSMatt Macy 2580eda14cbcSMatt Macy zap_cursor_init_serialized(&cursor, 2581eda14cbcSMatt Macy dd->dd_pool->dp_meta_objset, 2582eda14cbcSMatt Macy dsl_dir_phys(dd)->dd_child_dir_zapobj, *offp); 2583eda14cbcSMatt Macy 2584eda14cbcSMatt Macy if (zap_cursor_retrieve(&cursor, &attr) != 0) { 2585eda14cbcSMatt Macy zap_cursor_fini(&cursor); 2586eda14cbcSMatt Macy return (SET_ERROR(ENOENT)); 2587eda14cbcSMatt Macy } 2588eda14cbcSMatt Macy 2589eda14cbcSMatt Macy if (strlen(attr.za_name) + 1 > namelen) { 2590eda14cbcSMatt Macy zap_cursor_fini(&cursor); 2591eda14cbcSMatt Macy return (SET_ERROR(ENAMETOOLONG)); 2592eda14cbcSMatt Macy } 2593eda14cbcSMatt Macy 2594eda14cbcSMatt Macy (void) strlcpy(name, attr.za_name, namelen); 2595eda14cbcSMatt Macy if (idp) 2596eda14cbcSMatt Macy *idp = attr.za_first_integer; 2597eda14cbcSMatt Macy zap_cursor_advance(&cursor); 2598eda14cbcSMatt Macy *offp = zap_cursor_serialize(&cursor); 2599eda14cbcSMatt Macy zap_cursor_fini(&cursor); 2600eda14cbcSMatt Macy 2601eda14cbcSMatt Macy return (0); 2602eda14cbcSMatt Macy } 2603eda14cbcSMatt Macy 2604eda14cbcSMatt Macy typedef struct dmu_objset_find_ctx { 2605eda14cbcSMatt Macy taskq_t *dc_tq; 2606eda14cbcSMatt Macy dsl_pool_t *dc_dp; 2607eda14cbcSMatt Macy uint64_t dc_ddobj; 2608eda14cbcSMatt Macy char *dc_ddname; /* last component of ddobj's name */ 2609eda14cbcSMatt Macy int (*dc_func)(dsl_pool_t *, dsl_dataset_t *, void *); 2610eda14cbcSMatt Macy void *dc_arg; 2611eda14cbcSMatt Macy int dc_flags; 2612eda14cbcSMatt Macy kmutex_t *dc_error_lock; 2613eda14cbcSMatt Macy int *dc_error; 2614eda14cbcSMatt Macy } dmu_objset_find_ctx_t; 2615eda14cbcSMatt Macy 2616eda14cbcSMatt Macy static void 2617eda14cbcSMatt Macy dmu_objset_find_dp_impl(dmu_objset_find_ctx_t *dcp) 2618eda14cbcSMatt Macy { 2619eda14cbcSMatt Macy dsl_pool_t *dp = dcp->dc_dp; 2620eda14cbcSMatt Macy dsl_dir_t *dd; 2621eda14cbcSMatt Macy dsl_dataset_t *ds; 2622eda14cbcSMatt Macy zap_cursor_t zc; 2623eda14cbcSMatt Macy zap_attribute_t *attr; 2624eda14cbcSMatt Macy uint64_t thisobj; 2625eda14cbcSMatt Macy int err = 0; 2626eda14cbcSMatt Macy 2627eda14cbcSMatt Macy /* don't process if there already was an error */ 2628eda14cbcSMatt Macy if (*dcp->dc_error != 0) 2629eda14cbcSMatt Macy goto out; 2630eda14cbcSMatt Macy 2631eda14cbcSMatt Macy /* 2632eda14cbcSMatt Macy * Note: passing the name (dc_ddname) here is optional, but it 2633eda14cbcSMatt Macy * improves performance because we don't need to call 2634eda14cbcSMatt Macy * zap_value_search() to determine the name. 2635eda14cbcSMatt Macy */ 2636eda14cbcSMatt Macy err = dsl_dir_hold_obj(dp, dcp->dc_ddobj, dcp->dc_ddname, FTAG, &dd); 2637eda14cbcSMatt Macy if (err != 0) 2638eda14cbcSMatt Macy goto out; 2639eda14cbcSMatt Macy 2640eda14cbcSMatt Macy /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 2641eda14cbcSMatt Macy if (dd->dd_myname[0] == '$') { 2642eda14cbcSMatt Macy dsl_dir_rele(dd, FTAG); 2643eda14cbcSMatt Macy goto out; 2644eda14cbcSMatt Macy } 2645eda14cbcSMatt Macy 2646eda14cbcSMatt Macy thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj; 2647eda14cbcSMatt Macy attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 2648eda14cbcSMatt Macy 2649eda14cbcSMatt Macy /* 2650eda14cbcSMatt Macy * Iterate over all children. 2651eda14cbcSMatt Macy */ 2652eda14cbcSMatt Macy if (dcp->dc_flags & DS_FIND_CHILDREN) { 2653eda14cbcSMatt Macy for (zap_cursor_init(&zc, dp->dp_meta_objset, 2654eda14cbcSMatt Macy dsl_dir_phys(dd)->dd_child_dir_zapobj); 2655eda14cbcSMatt Macy zap_cursor_retrieve(&zc, attr) == 0; 2656eda14cbcSMatt Macy (void) zap_cursor_advance(&zc)) { 2657eda14cbcSMatt Macy ASSERT3U(attr->za_integer_length, ==, 2658eda14cbcSMatt Macy sizeof (uint64_t)); 2659eda14cbcSMatt Macy ASSERT3U(attr->za_num_integers, ==, 1); 2660eda14cbcSMatt Macy 2661eda14cbcSMatt Macy dmu_objset_find_ctx_t *child_dcp = 2662eda14cbcSMatt Macy kmem_alloc(sizeof (*child_dcp), KM_SLEEP); 2663eda14cbcSMatt Macy *child_dcp = *dcp; 2664eda14cbcSMatt Macy child_dcp->dc_ddobj = attr->za_first_integer; 2665eda14cbcSMatt Macy child_dcp->dc_ddname = spa_strdup(attr->za_name); 2666eda14cbcSMatt Macy if (dcp->dc_tq != NULL) 2667eda14cbcSMatt Macy (void) taskq_dispatch(dcp->dc_tq, 2668eda14cbcSMatt Macy dmu_objset_find_dp_cb, child_dcp, TQ_SLEEP); 2669eda14cbcSMatt Macy else 2670eda14cbcSMatt Macy dmu_objset_find_dp_impl(child_dcp); 2671eda14cbcSMatt Macy } 2672eda14cbcSMatt Macy zap_cursor_fini(&zc); 2673eda14cbcSMatt Macy } 2674eda14cbcSMatt Macy 2675eda14cbcSMatt Macy /* 2676eda14cbcSMatt Macy * Iterate over all snapshots. 2677eda14cbcSMatt Macy */ 2678eda14cbcSMatt Macy if (dcp->dc_flags & DS_FIND_SNAPSHOTS) { 2679eda14cbcSMatt Macy dsl_dataset_t *ds; 2680eda14cbcSMatt Macy err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 2681eda14cbcSMatt Macy 2682eda14cbcSMatt Macy if (err == 0) { 2683eda14cbcSMatt Macy uint64_t snapobj; 2684eda14cbcSMatt Macy 2685eda14cbcSMatt Macy snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj; 2686eda14cbcSMatt Macy dsl_dataset_rele(ds, FTAG); 2687eda14cbcSMatt Macy 2688eda14cbcSMatt Macy for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 2689eda14cbcSMatt Macy zap_cursor_retrieve(&zc, attr) == 0; 2690eda14cbcSMatt Macy (void) zap_cursor_advance(&zc)) { 2691eda14cbcSMatt Macy ASSERT3U(attr->za_integer_length, ==, 2692eda14cbcSMatt Macy sizeof (uint64_t)); 2693eda14cbcSMatt Macy ASSERT3U(attr->za_num_integers, ==, 1); 2694eda14cbcSMatt Macy 2695eda14cbcSMatt Macy err = dsl_dataset_hold_obj(dp, 2696eda14cbcSMatt Macy attr->za_first_integer, FTAG, &ds); 2697eda14cbcSMatt Macy if (err != 0) 2698eda14cbcSMatt Macy break; 2699eda14cbcSMatt Macy err = dcp->dc_func(dp, ds, dcp->dc_arg); 2700eda14cbcSMatt Macy dsl_dataset_rele(ds, FTAG); 2701eda14cbcSMatt Macy if (err != 0) 2702eda14cbcSMatt Macy break; 2703eda14cbcSMatt Macy } 2704eda14cbcSMatt Macy zap_cursor_fini(&zc); 2705eda14cbcSMatt Macy } 2706eda14cbcSMatt Macy } 2707eda14cbcSMatt Macy 2708eda14cbcSMatt Macy kmem_free(attr, sizeof (zap_attribute_t)); 2709eda14cbcSMatt Macy 2710eda14cbcSMatt Macy if (err != 0) { 2711eda14cbcSMatt Macy dsl_dir_rele(dd, FTAG); 2712eda14cbcSMatt Macy goto out; 2713eda14cbcSMatt Macy } 2714eda14cbcSMatt Macy 2715eda14cbcSMatt Macy /* 2716eda14cbcSMatt Macy * Apply to self. 2717eda14cbcSMatt Macy */ 2718eda14cbcSMatt Macy err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 2719eda14cbcSMatt Macy 2720eda14cbcSMatt Macy /* 2721eda14cbcSMatt Macy * Note: we hold the dir while calling dsl_dataset_hold_obj() so 2722eda14cbcSMatt Macy * that the dir will remain cached, and we won't have to re-instantiate 2723eda14cbcSMatt Macy * it (which could be expensive due to finding its name via 2724eda14cbcSMatt Macy * zap_value_search()). 2725eda14cbcSMatt Macy */ 2726eda14cbcSMatt Macy dsl_dir_rele(dd, FTAG); 2727eda14cbcSMatt Macy if (err != 0) 2728eda14cbcSMatt Macy goto out; 2729eda14cbcSMatt Macy err = dcp->dc_func(dp, ds, dcp->dc_arg); 2730eda14cbcSMatt Macy dsl_dataset_rele(ds, FTAG); 2731eda14cbcSMatt Macy 2732eda14cbcSMatt Macy out: 2733eda14cbcSMatt Macy if (err != 0) { 2734eda14cbcSMatt Macy mutex_enter(dcp->dc_error_lock); 2735eda14cbcSMatt Macy /* only keep first error */ 2736eda14cbcSMatt Macy if (*dcp->dc_error == 0) 2737eda14cbcSMatt Macy *dcp->dc_error = err; 2738eda14cbcSMatt Macy mutex_exit(dcp->dc_error_lock); 2739eda14cbcSMatt Macy } 2740eda14cbcSMatt Macy 2741eda14cbcSMatt Macy if (dcp->dc_ddname != NULL) 2742eda14cbcSMatt Macy spa_strfree(dcp->dc_ddname); 2743eda14cbcSMatt Macy kmem_free(dcp, sizeof (*dcp)); 2744eda14cbcSMatt Macy } 2745eda14cbcSMatt Macy 2746eda14cbcSMatt Macy static void 2747eda14cbcSMatt Macy dmu_objset_find_dp_cb(void *arg) 2748eda14cbcSMatt Macy { 2749eda14cbcSMatt Macy dmu_objset_find_ctx_t *dcp = arg; 2750eda14cbcSMatt Macy dsl_pool_t *dp = dcp->dc_dp; 2751eda14cbcSMatt Macy 2752eda14cbcSMatt Macy /* 2753eda14cbcSMatt Macy * We need to get a pool_config_lock here, as there are several 2754eda14cbcSMatt Macy * assert(pool_config_held) down the stack. Getting a lock via 2755eda14cbcSMatt Macy * dsl_pool_config_enter is risky, as it might be stalled by a 2756eda14cbcSMatt Macy * pending writer. This would deadlock, as the write lock can 2757eda14cbcSMatt Macy * only be granted when our parent thread gives up the lock. 2758eda14cbcSMatt Macy * The _prio interface gives us priority over a pending writer. 2759eda14cbcSMatt Macy */ 2760eda14cbcSMatt Macy dsl_pool_config_enter_prio(dp, FTAG); 2761eda14cbcSMatt Macy 2762eda14cbcSMatt Macy dmu_objset_find_dp_impl(dcp); 2763eda14cbcSMatt Macy 2764eda14cbcSMatt Macy dsl_pool_config_exit(dp, FTAG); 2765eda14cbcSMatt Macy } 2766eda14cbcSMatt Macy 2767eda14cbcSMatt Macy /* 2768eda14cbcSMatt Macy * Find objsets under and including ddobj, call func(ds) on each. 2769eda14cbcSMatt Macy * The order for the enumeration is completely undefined. 2770eda14cbcSMatt Macy * func is called with dsl_pool_config held. 2771eda14cbcSMatt Macy */ 2772eda14cbcSMatt Macy int 2773eda14cbcSMatt Macy dmu_objset_find_dp(dsl_pool_t *dp, uint64_t ddobj, 2774eda14cbcSMatt Macy int func(dsl_pool_t *, dsl_dataset_t *, void *), void *arg, int flags) 2775eda14cbcSMatt Macy { 2776eda14cbcSMatt Macy int error = 0; 2777eda14cbcSMatt Macy taskq_t *tq = NULL; 2778eda14cbcSMatt Macy int ntasks; 2779eda14cbcSMatt Macy dmu_objset_find_ctx_t *dcp; 2780eda14cbcSMatt Macy kmutex_t err_lock; 2781eda14cbcSMatt Macy 2782eda14cbcSMatt Macy mutex_init(&err_lock, NULL, MUTEX_DEFAULT, NULL); 2783eda14cbcSMatt Macy dcp = kmem_alloc(sizeof (*dcp), KM_SLEEP); 2784eda14cbcSMatt Macy dcp->dc_tq = NULL; 2785eda14cbcSMatt Macy dcp->dc_dp = dp; 2786eda14cbcSMatt Macy dcp->dc_ddobj = ddobj; 2787eda14cbcSMatt Macy dcp->dc_ddname = NULL; 2788eda14cbcSMatt Macy dcp->dc_func = func; 2789eda14cbcSMatt Macy dcp->dc_arg = arg; 2790eda14cbcSMatt Macy dcp->dc_flags = flags; 2791eda14cbcSMatt Macy dcp->dc_error_lock = &err_lock; 2792eda14cbcSMatt Macy dcp->dc_error = &error; 2793eda14cbcSMatt Macy 2794eda14cbcSMatt Macy if ((flags & DS_FIND_SERIALIZE) || dsl_pool_config_held_writer(dp)) { 2795eda14cbcSMatt Macy /* 2796eda14cbcSMatt Macy * In case a write lock is held we can't make use of 2797eda14cbcSMatt Macy * parallelism, as down the stack of the worker threads 2798eda14cbcSMatt Macy * the lock is asserted via dsl_pool_config_held. 2799eda14cbcSMatt Macy * In case of a read lock this is solved by getting a read 2800eda14cbcSMatt Macy * lock in each worker thread, which isn't possible in case 2801eda14cbcSMatt Macy * of a writer lock. So we fall back to the synchronous path 2802eda14cbcSMatt Macy * here. 2803eda14cbcSMatt Macy * In the future it might be possible to get some magic into 2804eda14cbcSMatt Macy * dsl_pool_config_held in a way that it returns true for 2805eda14cbcSMatt Macy * the worker threads so that a single lock held from this 2806eda14cbcSMatt Macy * thread suffices. For now, stay single threaded. 2807eda14cbcSMatt Macy */ 2808eda14cbcSMatt Macy dmu_objset_find_dp_impl(dcp); 2809eda14cbcSMatt Macy mutex_destroy(&err_lock); 2810eda14cbcSMatt Macy 2811eda14cbcSMatt Macy return (error); 2812eda14cbcSMatt Macy } 2813eda14cbcSMatt Macy 2814eda14cbcSMatt Macy ntasks = dmu_find_threads; 2815eda14cbcSMatt Macy if (ntasks == 0) 2816eda14cbcSMatt Macy ntasks = vdev_count_leaves(dp->dp_spa) * 4; 2817eda14cbcSMatt Macy tq = taskq_create("dmu_objset_find", ntasks, maxclsyspri, ntasks, 2818eda14cbcSMatt Macy INT_MAX, 0); 2819eda14cbcSMatt Macy if (tq == NULL) { 2820eda14cbcSMatt Macy kmem_free(dcp, sizeof (*dcp)); 2821eda14cbcSMatt Macy mutex_destroy(&err_lock); 2822eda14cbcSMatt Macy 2823eda14cbcSMatt Macy return (SET_ERROR(ENOMEM)); 2824eda14cbcSMatt Macy } 2825eda14cbcSMatt Macy dcp->dc_tq = tq; 2826eda14cbcSMatt Macy 2827eda14cbcSMatt Macy /* dcp will be freed by task */ 2828eda14cbcSMatt Macy (void) taskq_dispatch(tq, dmu_objset_find_dp_cb, dcp, TQ_SLEEP); 2829eda14cbcSMatt Macy 2830eda14cbcSMatt Macy /* 2831eda14cbcSMatt Macy * PORTING: this code relies on the property of taskq_wait to wait 2832eda14cbcSMatt Macy * until no more tasks are queued and no more tasks are active. As 2833eda14cbcSMatt Macy * we always queue new tasks from within other tasks, task_wait 2834eda14cbcSMatt Macy * reliably waits for the full recursion to finish, even though we 2835eda14cbcSMatt Macy * enqueue new tasks after taskq_wait has been called. 2836eda14cbcSMatt Macy * On platforms other than illumos, taskq_wait may not have this 2837eda14cbcSMatt Macy * property. 2838eda14cbcSMatt Macy */ 2839eda14cbcSMatt Macy taskq_wait(tq); 2840eda14cbcSMatt Macy taskq_destroy(tq); 2841eda14cbcSMatt Macy mutex_destroy(&err_lock); 2842eda14cbcSMatt Macy 2843eda14cbcSMatt Macy return (error); 2844eda14cbcSMatt Macy } 2845eda14cbcSMatt Macy 2846eda14cbcSMatt Macy /* 2847eda14cbcSMatt Macy * Find all objsets under name, and for each, call 'func(child_name, arg)'. 2848eda14cbcSMatt Macy * The dp_config_rwlock must not be held when this is called, and it 2849eda14cbcSMatt Macy * will not be held when the callback is called. 2850eda14cbcSMatt Macy * Therefore this function should only be used when the pool is not changing 2851eda14cbcSMatt Macy * (e.g. in syncing context), or the callback can deal with the possible races. 2852eda14cbcSMatt Macy */ 2853eda14cbcSMatt Macy static int 2854eda14cbcSMatt Macy dmu_objset_find_impl(spa_t *spa, const char *name, 2855eda14cbcSMatt Macy int func(const char *, void *), void *arg, int flags) 2856eda14cbcSMatt Macy { 2857eda14cbcSMatt Macy dsl_dir_t *dd; 2858eda14cbcSMatt Macy dsl_pool_t *dp = spa_get_dsl(spa); 2859eda14cbcSMatt Macy dsl_dataset_t *ds; 2860eda14cbcSMatt Macy zap_cursor_t zc; 2861eda14cbcSMatt Macy zap_attribute_t *attr; 2862eda14cbcSMatt Macy char *child; 2863eda14cbcSMatt Macy uint64_t thisobj; 2864eda14cbcSMatt Macy int err; 2865eda14cbcSMatt Macy 2866eda14cbcSMatt Macy dsl_pool_config_enter(dp, FTAG); 2867eda14cbcSMatt Macy 2868eda14cbcSMatt Macy err = dsl_dir_hold(dp, name, FTAG, &dd, NULL); 2869eda14cbcSMatt Macy if (err != 0) { 2870eda14cbcSMatt Macy dsl_pool_config_exit(dp, FTAG); 2871eda14cbcSMatt Macy return (err); 2872eda14cbcSMatt Macy } 2873eda14cbcSMatt Macy 2874eda14cbcSMatt Macy /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 2875eda14cbcSMatt Macy if (dd->dd_myname[0] == '$') { 2876eda14cbcSMatt Macy dsl_dir_rele(dd, FTAG); 2877eda14cbcSMatt Macy dsl_pool_config_exit(dp, FTAG); 2878eda14cbcSMatt Macy return (0); 2879eda14cbcSMatt Macy } 2880eda14cbcSMatt Macy 2881eda14cbcSMatt Macy thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj; 2882eda14cbcSMatt Macy attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 2883eda14cbcSMatt Macy 2884eda14cbcSMatt Macy /* 2885eda14cbcSMatt Macy * Iterate over all children. 2886eda14cbcSMatt Macy */ 2887eda14cbcSMatt Macy if (flags & DS_FIND_CHILDREN) { 2888eda14cbcSMatt Macy for (zap_cursor_init(&zc, dp->dp_meta_objset, 2889eda14cbcSMatt Macy dsl_dir_phys(dd)->dd_child_dir_zapobj); 2890eda14cbcSMatt Macy zap_cursor_retrieve(&zc, attr) == 0; 2891eda14cbcSMatt Macy (void) zap_cursor_advance(&zc)) { 2892eda14cbcSMatt Macy ASSERT3U(attr->za_integer_length, ==, 2893eda14cbcSMatt Macy sizeof (uint64_t)); 2894eda14cbcSMatt Macy ASSERT3U(attr->za_num_integers, ==, 1); 2895eda14cbcSMatt Macy 2896eda14cbcSMatt Macy child = kmem_asprintf("%s/%s", name, attr->za_name); 2897eda14cbcSMatt Macy dsl_pool_config_exit(dp, FTAG); 2898eda14cbcSMatt Macy err = dmu_objset_find_impl(spa, child, 2899eda14cbcSMatt Macy func, arg, flags); 2900eda14cbcSMatt Macy dsl_pool_config_enter(dp, FTAG); 2901eda14cbcSMatt Macy kmem_strfree(child); 2902eda14cbcSMatt Macy if (err != 0) 2903eda14cbcSMatt Macy break; 2904eda14cbcSMatt Macy } 2905eda14cbcSMatt Macy zap_cursor_fini(&zc); 2906eda14cbcSMatt Macy 2907eda14cbcSMatt Macy if (err != 0) { 2908eda14cbcSMatt Macy dsl_dir_rele(dd, FTAG); 2909eda14cbcSMatt Macy dsl_pool_config_exit(dp, FTAG); 2910eda14cbcSMatt Macy kmem_free(attr, sizeof (zap_attribute_t)); 2911eda14cbcSMatt Macy return (err); 2912eda14cbcSMatt Macy } 2913eda14cbcSMatt Macy } 2914eda14cbcSMatt Macy 2915eda14cbcSMatt Macy /* 2916eda14cbcSMatt Macy * Iterate over all snapshots. 2917eda14cbcSMatt Macy */ 2918eda14cbcSMatt Macy if (flags & DS_FIND_SNAPSHOTS) { 2919eda14cbcSMatt Macy err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 2920eda14cbcSMatt Macy 2921eda14cbcSMatt Macy if (err == 0) { 2922eda14cbcSMatt Macy uint64_t snapobj; 2923eda14cbcSMatt Macy 2924eda14cbcSMatt Macy snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj; 2925eda14cbcSMatt Macy dsl_dataset_rele(ds, FTAG); 2926eda14cbcSMatt Macy 2927eda14cbcSMatt Macy for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 2928eda14cbcSMatt Macy zap_cursor_retrieve(&zc, attr) == 0; 2929eda14cbcSMatt Macy (void) zap_cursor_advance(&zc)) { 2930eda14cbcSMatt Macy ASSERT3U(attr->za_integer_length, ==, 2931eda14cbcSMatt Macy sizeof (uint64_t)); 2932eda14cbcSMatt Macy ASSERT3U(attr->za_num_integers, ==, 1); 2933eda14cbcSMatt Macy 2934eda14cbcSMatt Macy child = kmem_asprintf("%s@%s", 2935eda14cbcSMatt Macy name, attr->za_name); 2936eda14cbcSMatt Macy dsl_pool_config_exit(dp, FTAG); 2937eda14cbcSMatt Macy err = func(child, arg); 2938eda14cbcSMatt Macy dsl_pool_config_enter(dp, FTAG); 2939eda14cbcSMatt Macy kmem_strfree(child); 2940eda14cbcSMatt Macy if (err != 0) 2941eda14cbcSMatt Macy break; 2942eda14cbcSMatt Macy } 2943eda14cbcSMatt Macy zap_cursor_fini(&zc); 2944eda14cbcSMatt Macy } 2945eda14cbcSMatt Macy } 2946eda14cbcSMatt Macy 2947eda14cbcSMatt Macy dsl_dir_rele(dd, FTAG); 2948eda14cbcSMatt Macy kmem_free(attr, sizeof (zap_attribute_t)); 2949eda14cbcSMatt Macy dsl_pool_config_exit(dp, FTAG); 2950eda14cbcSMatt Macy 2951eda14cbcSMatt Macy if (err != 0) 2952eda14cbcSMatt Macy return (err); 2953eda14cbcSMatt Macy 2954eda14cbcSMatt Macy /* Apply to self. */ 2955eda14cbcSMatt Macy return (func(name, arg)); 2956eda14cbcSMatt Macy } 2957eda14cbcSMatt Macy 2958eda14cbcSMatt Macy /* 2959eda14cbcSMatt Macy * See comment above dmu_objset_find_impl(). 2960eda14cbcSMatt Macy */ 2961eda14cbcSMatt Macy int 2962eda14cbcSMatt Macy dmu_objset_find(const char *name, int func(const char *, void *), void *arg, 2963eda14cbcSMatt Macy int flags) 2964eda14cbcSMatt Macy { 2965eda14cbcSMatt Macy spa_t *spa; 2966eda14cbcSMatt Macy int error; 2967eda14cbcSMatt Macy 2968eda14cbcSMatt Macy error = spa_open(name, &spa, FTAG); 2969eda14cbcSMatt Macy if (error != 0) 2970eda14cbcSMatt Macy return (error); 2971eda14cbcSMatt Macy error = dmu_objset_find_impl(spa, name, func, arg, flags); 2972eda14cbcSMatt Macy spa_close(spa, FTAG); 2973eda14cbcSMatt Macy return (error); 2974eda14cbcSMatt Macy } 2975eda14cbcSMatt Macy 2976eda14cbcSMatt Macy boolean_t 2977eda14cbcSMatt Macy dmu_objset_incompatible_encryption_version(objset_t *os) 2978eda14cbcSMatt Macy { 2979eda14cbcSMatt Macy return (dsl_dir_incompatible_encryption_version( 2980eda14cbcSMatt Macy os->os_dsl_dataset->ds_dir)); 2981eda14cbcSMatt Macy } 2982eda14cbcSMatt Macy 2983eda14cbcSMatt Macy void 2984eda14cbcSMatt Macy dmu_objset_set_user(objset_t *os, void *user_ptr) 2985eda14cbcSMatt Macy { 2986eda14cbcSMatt Macy ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 2987eda14cbcSMatt Macy os->os_user_ptr = user_ptr; 2988eda14cbcSMatt Macy } 2989eda14cbcSMatt Macy 2990eda14cbcSMatt Macy void * 2991eda14cbcSMatt Macy dmu_objset_get_user(objset_t *os) 2992eda14cbcSMatt Macy { 2993eda14cbcSMatt Macy ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 2994eda14cbcSMatt Macy return (os->os_user_ptr); 2995eda14cbcSMatt Macy } 2996eda14cbcSMatt Macy 2997eda14cbcSMatt Macy /* 2998eda14cbcSMatt Macy * Determine name of filesystem, given name of snapshot. 2999eda14cbcSMatt Macy * buf must be at least ZFS_MAX_DATASET_NAME_LEN bytes 3000eda14cbcSMatt Macy */ 3001eda14cbcSMatt Macy int 3002eda14cbcSMatt Macy dmu_fsname(const char *snapname, char *buf) 3003eda14cbcSMatt Macy { 3004eda14cbcSMatt Macy char *atp = strchr(snapname, '@'); 3005eda14cbcSMatt Macy if (atp == NULL) 3006eda14cbcSMatt Macy return (SET_ERROR(EINVAL)); 3007eda14cbcSMatt Macy if (atp - snapname >= ZFS_MAX_DATASET_NAME_LEN) 3008eda14cbcSMatt Macy return (SET_ERROR(ENAMETOOLONG)); 3009eda14cbcSMatt Macy (void) strlcpy(buf, snapname, atp - snapname + 1); 3010eda14cbcSMatt Macy return (0); 3011eda14cbcSMatt Macy } 3012eda14cbcSMatt Macy 3013eda14cbcSMatt Macy /* 3014eda14cbcSMatt Macy * Call when we think we're going to write/free space in open context 3015eda14cbcSMatt Macy * to track the amount of dirty data in the open txg, which is also the 3016eda14cbcSMatt Macy * amount of memory that can not be evicted until this txg syncs. 3017eda14cbcSMatt Macy * 3018eda14cbcSMatt Macy * Note that there are two conditions where this can be called from 3019eda14cbcSMatt Macy * syncing context: 3020eda14cbcSMatt Macy * 3021eda14cbcSMatt Macy * [1] When we just created the dataset, in which case we go on with 3022eda14cbcSMatt Macy * updating any accounting of dirty data as usual. 3023eda14cbcSMatt Macy * [2] When we are dirtying MOS data, in which case we only update the 3024eda14cbcSMatt Macy * pool's accounting of dirty data. 3025eda14cbcSMatt Macy */ 3026eda14cbcSMatt Macy void 3027eda14cbcSMatt Macy dmu_objset_willuse_space(objset_t *os, int64_t space, dmu_tx_t *tx) 3028eda14cbcSMatt Macy { 3029eda14cbcSMatt Macy dsl_dataset_t *ds = os->os_dsl_dataset; 3030eda14cbcSMatt Macy int64_t aspace = spa_get_worst_case_asize(os->os_spa, space); 3031eda14cbcSMatt Macy 3032eda14cbcSMatt Macy if (ds != NULL) { 3033eda14cbcSMatt Macy dsl_dir_willuse_space(ds->ds_dir, aspace, tx); 3034eda14cbcSMatt Macy } 3035eda14cbcSMatt Macy 3036eda14cbcSMatt Macy dsl_pool_dirty_space(dmu_tx_pool(tx), space, tx); 3037eda14cbcSMatt Macy } 3038eda14cbcSMatt Macy 3039eda14cbcSMatt Macy #if defined(_KERNEL) 3040eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_zil); 3041eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_pool); 3042eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_ds); 3043eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_type); 3044eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_name); 3045eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_hold); 3046eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_hold_flags); 3047eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_own); 3048eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_rele); 3049eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_rele_flags); 3050eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_disown); 3051eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_from_ds); 3052eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_create); 3053eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_clone); 3054eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_stats); 3055eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_fast_stat); 3056eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_spa); 3057eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_space); 3058eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_fsid_guid); 3059eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_find); 3060eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_byteswap); 3061eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_evict_dbufs); 3062eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_snap_cmtime); 3063eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_dnodesize); 3064eda14cbcSMatt Macy 3065eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_sync); 3066eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_is_dirty); 3067eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_create_impl_dnstats); 3068eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_create_impl); 3069eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_open_impl); 3070eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_evict); 3071eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_register_type); 30727877fdebSMatt Macy EXPORT_SYMBOL(dmu_objset_sync_done); 3073eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userquota_get_ids); 3074eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userused_enabled); 3075eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userspace_upgrade); 3076eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userspace_present); 3077eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userobjused_enabled); 3078eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userobjspace_upgradable); 3079eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userobjspace_present); 3080eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_projectquota_enabled); 3081eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_projectquota_present); 3082eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_projectquota_upgradable); 3083eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_id_quota_upgrade); 3084eda14cbcSMatt Macy #endif 3085