116038816SMartin Matuska#!/bin/ksh -p 216038816SMartin Matuska# 316038816SMartin Matuska# This file and its contents are supplied under the terms of the 416038816SMartin Matuska# Common Development and Distribution License ("CDDL"), version 1.0. 516038816SMartin Matuska# You may only use this file in accordance with the terms of version 616038816SMartin Matuska# 1.0 of the CDDL. 716038816SMartin Matuska# 816038816SMartin Matuska# A full copy of the text of the CDDL should have accompanied this 916038816SMartin Matuska# source. A copy of the CDDL is also available via the Internet at 1016038816SMartin Matuska# http://www.illumos.org/license/CDDL. 1116038816SMartin Matuska# 1216038816SMartin Matuska 1316038816SMartin Matuska# 1416038816SMartin Matuska# Copyright (c) 2021 by Delphix. All rights reserved. 1516038816SMartin Matuska# 1616038816SMartin Matuska 1716038816SMartin Matuska# DESCRIPTION 1816038816SMartin Matuska# Verify zfs destroy test for clones with livelists that contain 1916038816SMartin Matuska# dedup blocks. This test is a baseline regression test created 2016038816SMartin Matuska# to ensure that past bugs that we've encountered between dedup 2116038816SMartin Matuska# and the livelist logic don't resurface. 2216038816SMartin Matuska 2316038816SMartin Matuska# STRATEGY 2416038816SMartin Matuska# 1. Create a clone from a test filesystem and enable dedup. 2516038816SMartin Matuska# 2. Write some data and create a livelist. 2616038816SMartin Matuska# 3. Copy the data within the clone to create dedup blocks. 2716038816SMartin Matuska# 4. Remove some of the dedup data to create multiple free 2816038816SMartin Matuska# entries for the same block pointers. 2916038816SMartin Matuska# 5. Process all the livelist entries by destroying the clone. 3016038816SMartin Matuska 3116038816SMartin Matuska. $STF_SUITE/include/libtest.shlib 3216038816SMartin Matuska. $STF_SUITE/tests/functional/cli_root/zfs_destroy/zfs_destroy_common.kshlib 3316038816SMartin Matuska 3416038816SMartin Matuskafunction cleanup 3516038816SMartin Matuska{ 3616038816SMartin Matuska log_must zfs destroy -Rf $TESTPOOL/$TESTFS1 3716038816SMartin Matuska # Reset the minimum percent shared to 75 3816038816SMartin Matuska set_tunable32 LIVELIST_MIN_PERCENT_SHARED $ORIGINAL_MIN_SHARED 3916038816SMartin Matuska} 4016038816SMartin Matuska 4116038816SMartin Matuskafunction test_dedup 4216038816SMartin Matuska{ 4316038816SMartin Matuska # Set a small percent shared threshold so the livelist is not disabled 4416038816SMartin Matuska set_tunable32 LIVELIST_MIN_PERCENT_SHARED 10 4516038816SMartin Matuska clone_dataset $TESTFS1 snap $TESTCLONE 4616038816SMartin Matuska 4716038816SMartin Matuska # Enable dedup 4816038816SMartin Matuska log_must zfs set dedup=on $TESTPOOL/$TESTCLONE 4916038816SMartin Matuska 5016038816SMartin Matuska # Create some data to be deduped 5116038816SMartin Matuska log_must dd if=/dev/urandom of="/$TESTPOOL/$TESTCLONE/data" bs=512 count=10k 5216038816SMartin Matuska 5316038816SMartin Matuska # Create dedup blocks 5416038816SMartin Matuska # Note: We sync before and after so all dedup blocks belong to the 5516038816SMartin Matuska # same TXG, otherwise they won't look identical to the livelist 5616038816SMartin Matuska # iterator due to their logical birth TXG being different. 57e92ffd9bSMartin Matuska sync_pool $TESTPOOL 5816038816SMartin Matuska log_must cp /$TESTPOOL/$TESTCLONE/data /$TESTPOOL/$TESTCLONE/data-dup-0 5916038816SMartin Matuska log_must cp /$TESTPOOL/$TESTCLONE/data /$TESTPOOL/$TESTCLONE/data-dup-1 6016038816SMartin Matuska log_must cp /$TESTPOOL/$TESTCLONE/data /$TESTPOOL/$TESTCLONE/data-dup-2 6116038816SMartin Matuska log_must cp /$TESTPOOL/$TESTCLONE/data /$TESTPOOL/$TESTCLONE/data-dup-3 62e92ffd9bSMartin Matuska sync_pool $TESTPOOL 6316038816SMartin Matuska check_livelist_exists $TESTCLONE 6416038816SMartin Matuska 6516038816SMartin Matuska # Introduce "double frees" 6616038816SMartin Matuska # We want to introduce consecutive FREEs of the same block as this 6716038816SMartin Matuska # was what triggered past panics. 6816038816SMartin Matuska # Note: Similarly to the previouys step we sync before and after our 6916038816SMartin Matuska # our deletions so all the entries end up in the same TXG. 70e92ffd9bSMartin Matuska sync_pool $TESTPOOL 7116038816SMartin Matuska log_must rm /$TESTPOOL/$TESTCLONE/data-dup-2 7216038816SMartin Matuska log_must rm /$TESTPOOL/$TESTCLONE/data-dup-3 73e92ffd9bSMartin Matuska sync_pool $TESTPOOL 7416038816SMartin Matuska check_livelist_exists $TESTCLONE 7516038816SMartin Matuska 7616038816SMartin Matuska log_must zfs destroy $TESTPOOL/$TESTCLONE 7716038816SMartin Matuska check_livelist_gone 7816038816SMartin Matuska} 7916038816SMartin Matuska 8016038816SMartin MatuskaORIGINAL_MIN_SHARED=$(get_tunable LIVELIST_MIN_PERCENT_SHARED) 8116038816SMartin Matuska 8216038816SMartin Matuskalog_onexit cleanup 83*c03c5b1cSMartin Matuska# You might think that setting compression=off for $TESTFS1 would be 84*c03c5b1cSMartin Matuska# sufficient. You would be mistaken. 85*c03c5b1cSMartin Matuska# You need compression=off for whatever the parent of $TESTFS1 is, 86*c03c5b1cSMartin Matuska# and $TESTFS1. 87*c03c5b1cSMartin Matuskalog_must zfs set compression=off $TESTPOOL 8816038816SMartin Matuskalog_must zfs create $TESTPOOL/$TESTFS1 8916038816SMartin Matuskalog_must mkfile 5m /$TESTPOOL/$TESTFS1/atestfile 9016038816SMartin Matuskalog_must zfs snapshot $TESTPOOL/$TESTFS1@snap 9116038816SMartin Matuskatest_dedup 9216038816SMartin Matuska 93*c03c5b1cSMartin Matuskalog_must zfs inherit compression $TESTPOOL 94*c03c5b1cSMartin Matuska 9516038816SMartin Matuskalog_pass "Clone's livelist processes dedup blocks as expected." 96