1#!/bin/ksh -p
2#
3# This file and its contents are supplied under the terms of the
4# Common Development and Distribution License ("CDDL"), version 1.0.
5# You may only use this file in accordance with the terms of version
6# 1.0 of the CDDL.
7#
8# A full copy of the text of the CDDL should have accompanied this
9# source.  A copy of the CDDL is also available via the Internet at
10# http://www.illumos.org/license/CDDL.
11#
12
13#
14# Copyright (c) 2018 by Delphix. All rights reserved.
15#
16
17# DESCRIPTION
18# Verify that livelists tracking remapped blocks can be
19# properly condensed.
20
21# STRATEGY
22# 1. Create a pool with disk1 and create a filesystem, snapshot
23# and clone. Create two files for the first livelist entry and
24# pause condensing.
25# 2. Add disk2 to the pool and then remove disk1, triggering a
26# remap of the blkptrs tracked in the livelist.
27# 3. Overwrite the first file several times to trigger a condense,
28# overwrite the second file once and resume condensing, now with
29# extra blkptrs added during the remap
30# 4. Check that the test added new ALLOC blkptrs mid-condense using
31# a variable set in that code path
32
33. $STF_SUITE/include/libtest.shlib
34. $STF_SUITE/tests/functional/removal/removal.kshlib
35. $STF_SUITE/tests/functional/cli_root/zfs_destroy/zfs_destroy.cfg
36
37function cleanup
38{
39	poolexists $TESTPOOL2 && zpool destroy $TESTPOOL2
40	# reset livelist max size
41	set_tunable64 LIVELIST_MAX_ENTRIES $ORIGINAL_MAX
42	[[ -f $VIRTUAL_DISK1 ]] && log_must rm $VIRTUAL_DISK1
43	[[ -f $VIRTUAL_DISK2 ]] && log_must rm $VIRTUAL_DISK2
44}
45
46log_onexit cleanup
47
48ORIGINAL_MAX=$(get_tunable LIVELIST_MAX_ENTRIES)
49set_tunable64 LIVELIST_MAX_ENTRIES 20
50
51VIRTUAL_DISK1=$TEST_BASE_DIR/disk1
52VIRTUAL_DISK2=$TEST_BASE_DIR/disk2
53log_must truncate -s $(($MINVDEVSIZE * 8)) $VIRTUAL_DISK1
54log_must truncate -s $(($MINVDEVSIZE * 16)) $VIRTUAL_DISK2
55
56log_must zpool create -O compression=off $TESTPOOL2 $VIRTUAL_DISK1
57log_must poolexists $TESTPOOL2
58
59log_must zfs create $TESTPOOL2/$TESTFS
60log_must mkfile 100m /$TESTPOOL2/$TESTFS/atestfile
61log_must zfs snapshot $TESTPOOL2/$TESTFS@snap
62
63log_must zfs clone $TESTPOOL2/$TESTFS@snap $TESTPOOL2/$TESTCLONE
64
65# Create initial files and pause condense zthr on next execution
66log_must mkfile 10m /$TESTPOOL2/$TESTCLONE/A
67log_must mkfile 1m /$TESTPOOL2/$TESTCLONE/B
68sync_pool $TESTPOOL2
69set_tunable32 LIVELIST_CONDENSE_SYNC_PAUSE 1
70
71# Add a new dev and remove the old one
72log_must zpool add $TESTPOOL2 $VIRTUAL_DISK2
73log_must zpool remove $TESTPOOL2 $VIRTUAL_DISK1
74wait_for_removal $TESTPOOL2
75
76set_tunable32 LIVELIST_CONDENSE_NEW_ALLOC 0
77# Trigger a condense
78log_must mkfile 10m /$TESTPOOL2/$TESTCLONE/A
79sync_pool $TESTPOOL2
80log_must mkfile 10m /$TESTPOOL2/$TESTCLONE/A
81sync_pool $TESTPOOL2
82# Write remapped blkptrs which will modify the livelist mid-condense
83log_must mkfile 1m /$TESTPOOL2/$TESTCLONE/B
84
85# Resume condense thr
86set_tunable32 LIVELIST_CONDENSE_SYNC_PAUSE 0
87sync_pool $TESTPOOL2
88# Check that we've added new ALLOC blkptrs during the condense
89[[ "0" < "$(get_tunable LIVELIST_CONDENSE_NEW_ALLOC)" ]] || \
90    log_fail "removal/condense test failed"
91
92log_must zfs destroy $TESTPOOL2/$TESTCLONE
93log_pass "Clone with the livelist feature and remapped blocks," \
94	"can be condensed."
95