1#!/bin/ksh -p
2#
3# CDDL HEADER START
4#
5# The contents of this file are subject to the terms of the
6# Common Development and Distribution License (the "License").
7# You may not use this file except in compliance with the License.
8#
9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10# or http://www.opensolaris.org/os/licensing.
11# See the License for the specific language governing permissions
12# and limitations under the License.
13#
14# When distributing Covered Code, include this CDDL HEADER in each
15# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16# If applicable, add the following below this CDDL HEADER, with the
17# fields enclosed by brackets "[]" replaced with your own identifying
18# information: Portions Copyright [yyyy] [name of copyright owner]
19#
20# CDDL HEADER END
21#
22
23#
24# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
25# Use is subject to license terms.
26#
27
28#
29# Copyright (c) 2013, 2016 by Delphix. All rights reserved.
30# Copyright 2020 Joyent, Inc.
31#
32
33. $STF_SUITE/include/libtest.shlib
34
35#
36# DESCRIPTION:
37#	zpool history will truncate on small pools, leaving pool creation intact
38#
39# STRATEGY:
40#	1. Create a test pool on a file.
41#	2. Loop 300 times to set and remove compression to test dataset.
42#	3. Make sure 'zpool history' output is truncated
43#	4. Verify that the initial pool creation is preserved.
44#
45
46verify_runnable "global"
47
48function cleanup
49{
50	datasetexists $spool && log_must zpool destroy $spool
51	[[ -f $VDEV0 ]] && log_must rm -f $VDEV0
52	[[ -f $TMPFILE ]] && log_must rm -f $TMPFILE
53}
54
55log_assert "zpool history limitation test."
56log_onexit cleanup
57
58mntpnt=$(get_prop mountpoint $TESTPOOL)
59(( $? != 0 )) && log_fail "get_prop mountpoint $TESTPOOL"
60
61VDEV0=$mntpnt/vdev0
62log_must mkfile $MINVDEVSIZE $VDEV0
63
64spool=smallpool.$$; sfs=smallfs.$$
65log_must zpool create $spool $VDEV0
66log_must zfs create $spool/$sfs
67
68typeset -i orig_count=$(zpool history $spool | wc -l)
69typeset orig_md5=$(zpool history $spool | head -2 | digest -a md5)
70
71typeset -i i=0
72while ((i < 300)); do
73	zfs set compression=off $spool/$sfs
74	zfs set compression=on $spool/$sfs
75	zfs set compression=off $spool/$sfs
76	zfs set compression=on $spool/$sfs
77	zfs set compression=off $spool/$sfs
78
79	((i += 1))
80done
81
82TMPFILE=/tmp/spool.$$
83zpool history $spool >$TMPFILE
84typeset -i entry_count=$(wc -l $TMPFILE | awk '{print $1}')
85typeset final_md5=$(head -2 $TMPFILE | digest -a md5)
86
87grep 'zpool create' $TMPFILE >/dev/null 2>&1 ||
88    log_fail "'zpool create' was not found in pool history"
89
90grep 'zfs create' $TMPFILE >/dev/null 2>&1 &&
91    log_fail "'zfs create' was found in pool history"
92
93grep 'zfs set compress' $TMPFILE >/dev/null 2>&1 ||
94    log_fail "'zfs set compress' was found in pool history"
95
96# Verify that the creation of the pool was preserved in the history.
97if [[ $orig_md5 != $final_md5 ]]; then
98	log_fail "zpool creation history was not preserved."
99fi
100
101log_pass "zpool history limitation test passed."
102