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.
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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.
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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]
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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 && \
55		log_must zfs destroy -r $SNAPPOOL
56
57	[[ -e $TESTDIR ]] && \
58		log_must rm -rf $TESTDIR/* > /dev/null 2>&1
59}
60
61log_assert "Verify that rollback to a snapshot created by snapshot -r succeeds."
62log_onexit cleanup
63
64[[ -n $TESTDIR ]] && \
65    log_must rm -rf $TESTDIR/* > /dev/null 2>&1
66
67typeset -i COUNT=10
68
69log_note "Populate the $TESTDIR directory (prior to snapshot)"
70typeset -i i=0
71while (( i < COUNT )); do
72	log_must file_write -o create -f $TESTDIR/before_file$i \
73	   -b $BLOCKSZ -c $NUM_WRITES -d $i
74
75	(( i = i + 1 ))
76done
77
78log_must zfs snapshot -r $SNAPPOOL
79
80FILE_COUNT=`ls -Al $SNAPDIR | grep -v "total" | wc -l`
81if (( FILE_COUNT != COUNT )); then
82        ls -Al $SNAPDIR
83        log_fail "AFTER: $SNAPFS contains $FILE_COUNT files(s)."
84fi
85
86log_note "Populate the $TESTDIR directory (post snapshot)"
87typeset -i i=0
88while (( i < COUNT )); do
89        log_must file_write -o create -f $TESTDIR/after_file$i \
90           -b $BLOCKSZ -c $NUM_WRITES -d $i
91
92        (( i = i + 1 ))
93done
94
95#
96# Now rollback to latest snapshot
97#
98log_must zfs rollback $SNAPFS
99
100FILE_COUNT=`ls -Al $TESTDIR/after* 2> /dev/null | grep -v "total" | wc -l`
101if (( FILE_COUNT != 0 )); then
102        ls -Al $TESTDIR
103        log_fail "$TESTDIR contains $FILE_COUNT after* files(s)."
104fi
105
106FILE_COUNT=`ls -Al $TESTDIR/before* 2> /dev/null \
107    | grep -v "total" | wc -l`
108if (( FILE_COUNT != $COUNT )); then
109	ls -Al $TESTDIR
110	log_fail "$TESTDIR contains $FILE_COUNT before* files(s)."
111fi
112
113log_pass "Rollback with child snapshot works as expected."
114