1#!/usr/bin/ksh -p
2
3#
4# This file and its contents are supplied under the terms of the
5# Common Development and Distribution License ("CDDL"), version 1.0.
6# You may only use this file in accordance with the terms of version
7# 1.0 of the CDDL.
8#
9# A full copy of the text of the CDDL should have accompanied this
10# source.  A copy of the CDDL is also available via the Internet at
11# http://www.illumos.org/license/CDDL.
12#
13
14#
15# Copyright (c) 2017, 2018 by Delphix. All rights reserved.
16#
17
18. $STF_SUITE/tests/functional/pool_checkpoint/pool_checkpoint.kshlib
19
20#
21# DESCRIPTION:
22#	Rewind to checkpoint on a stressed pool. We basically try to
23#	fragment the pool before and after taking a checkpoint and
24#	see if zdb finds any checksum or other errors that imply that
25#	blocks from the checkpoint have been reused.
26#
27# STRATEGY:
28#	1. Import pool that's slightly fragmented
29#	2. Take checkpoint
30#	3. Apply a destructive action and do more random writes
31#	4. Run zdb on both current and checkpointed data and make
32#	   sure that zdb returns with no errors
33#	5. Rewind to checkpoint
34#	6. Run zdb again
35#
36
37verify_runnable "global"
38
39setup_nested_pool_state
40log_onexit cleanup_nested_pools
41
42log_must zpool checkpoint $NESTEDPOOL
43
44#
45# Destroy one dataset, modify an existing one and create a
46# a new one. Do more random writes in an attempt to raise
47# more fragmentation. Then verify both current and checkpointed
48# states.
49#
50fragment_after_checkpoint_and_verify
51
52log_must zpool export $NESTEDPOOL
53log_must zpool import -d $FILEDISKDIR --rewind-to-checkpoint $NESTEDPOOL
54
55log_must zdb $NESTEDPOOL
56
57log_pass "Rewind to checkpoint on a stressed pool."
58