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#
31
32. $STF_SUITE/include/libtest.shlib
33
34#
35# DESCRIPTION:
36#	zpool history will truncate on small pools, leaving pool creation intact
37#
38# STRATEGY:
39#	1. Create a test pool on a file.
40#	2. Loop 300 times to set and remove compression to test dataset.
41#	3. Make sure 'zpool history' output is truncated
42#	4. Verify that the initial pool creation is preserved.
43#
44
45verify_runnable "global"
46
47function cleanup
48{
49	datasetexists $spool && log_must zpool destroy $spool
50	[[ -f $VDEV0 ]] && log_must rm -f $VDEV0
51	[[ -f $TMPFILE ]] && log_must rm -f $TMPFILE
52}
53
54log_assert "zpool history limitation test."
55log_onexit cleanup
56
57mntpnt=$(get_prop mountpoint $TESTPOOL)
58(( $? != 0 )) && log_fail "get_prop mountpoint $TESTPOOL"
59
60VDEV0=$mntpnt/vdev0
61log_must mkfile $MINVDEVSIZE $VDEV0
62
63spool=smallpool.$$; sfs=smallfs.$$
64log_must zpool create $spool $VDEV0
65log_must zfs create $spool/$sfs
66
67typeset -i orig_count=$(zpool history $spool | wc -l)
68typeset orig_md5=$(zpool history $spool | head -2 | md5digest)
69typeset -i i=0
70while ((i < 300)); do
71	zfs set compression=off $spool/$sfs
72	zfs set compression=on $spool/$sfs
73	zfs set compression=off $spool/$sfs
74	zfs set compression=on $spool/$sfs
75	zfs set compression=off $spool/$sfs
76
77	((i += 1))
78done
79
80TMPFILE=$TEST_BASE_DIR/spool.$$
81zpool history $spool >$TMPFILE
82typeset -i entry_count=$(wc -l $TMPFILE | awk '{print $1}')
83typeset final_md5=$(head -2 $TMPFILE | md5digest)
84
85grep 'zpool create' $TMPFILE >/dev/null 2>&1 ||
86    log_fail "'zpool create' was not found in pool history"
87
88grep 'zfs create' $TMPFILE >/dev/null 2>&1 &&
89    log_fail "'zfs create' was found in pool history"
90
91grep 'zfs set compress' $TMPFILE >/dev/null 2>&1 ||
92    log_fail "'zfs set compress' was found in pool history"
93
94# Verify that the creation of the pool was preserved in the history.
95if [[ $orig_md5 != $final_md5 ]]; then
96	log_fail "zpool creation history was not preserved."
97fi
98
99log_pass "zpool history limitation test passed."
100