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 https://opensource.org/licenses/CDDL-1.0.
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. $STF_SUITE/tests/functional/snapshot/snapshot.cfg
34
35#
36# DESCRIPTION:
37#	use 'snapshot -r' to create a snapshot tree, add some files to one child
38#	filesystem, rollback the child filesystem snapshot, verify that the child
39# 	filesystem gets back to the status while taking the snapshot.
40#
41# STRATEGY:
42#	1. Add some files to a target child filesystem
43#	2. snapshot -r the parent filesystem
44#	3. Add some other files to the target child filesystem
45#	4. rollback the child filesystem snapshot
46#	5. verify that the child filesystem get back to the status while being
47#	   snapshot'd
48#
49
50verify_runnable "both"
51
52function cleanup
53{
54	snapexists $SNAPPOOL && destroy_dataset $SNAPPOOL -r
55
56	[ -e $TESTDIR ] && log_must rm -rf $TESTDIR/*
57}
58
59log_assert "Verify that rollback to a snapshot created by snapshot -r succeeds."
60log_onexit cleanup
61
62[ -n $TESTDIR ] && log_must rm -rf $TESTDIR/*
63
64typeset -i COUNT=10
65
66log_note "Populate the $TESTDIR directory (prior to snapshot)"
67typeset -i i=0
68while (( i < COUNT )); do
69	log_must file_write -o create -f $TESTDIR/before_file$i \
70	   -b $BLOCKSZ -c $NUM_WRITES -d $i
71
72	(( i = i + 1 ))
73done
74
75log_must zfs snapshot -r $SNAPPOOL
76
77FILE_COUNT=$(ls -A $SNAPDIR | wc -l)
78if (( FILE_COUNT != COUNT )); then
79        ls -Al $SNAPDIR
80        log_fail "AFTER: $SNAPFS contains $FILE_COUNT files(s)."
81fi
82
83log_note "Populate the $TESTDIR directory (post snapshot)"
84typeset -i i=0
85while (( i < COUNT )); do
86        log_must file_write -o create -f $TESTDIR/after_file$i \
87           -b $BLOCKSZ -c $NUM_WRITES -d $i
88
89        (( i = i + 1 ))
90done
91
92#
93# Now rollback to latest snapshot
94#
95log_must zfs rollback $SNAPFS
96
97FILE_COUNT=$(ls -A $TESTDIR/after* 2> /dev/null | wc -l)
98if (( FILE_COUNT != 0 )); then
99        ls -Al $TESTDIR
100        log_fail "$TESTDIR contains $FILE_COUNT after* files(s)."
101fi
102
103FILE_COUNT=$(ls -A $TESTDIR/before* 2> /dev/null | wc -l)
104if (( FILE_COUNT != $COUNT )); then
105	ls -Al $TESTDIR
106	log_fail "$TESTDIR contains $FILE_COUNT before* files(s)."
107fi
108
109log_pass "Rollback with child snapshot works as expected."
110