1#! /bin/ksh -p
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5# The contents of this file are subject to the terms of the
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7# You may not use this file except in compliance with the License.
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16# If applicable, add the following below this CDDL HEADER, with the
17# fields enclosed by brackets "[]" replaced with your own identifying
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20# CDDL HEADER END
21#
22
23#
24# Copyright 2009 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. $STF_SUITE/tests/functional/snapshot/snapshot.cfg
34
35#
36# DESCRIPTION:
37#	Create a snapshot from regular filesystem, volume,
38#	or filesystem upon volume, Build a clone file system
39#	from the snapshot and verify new files can be written.
40#
41# STRATEGY:
42# 	1. Create snapshot use 3 combination:
43#		- Regular filesystem
44#		- Regular volume
45#		- Filesystem upon volume
46# 	2. Clone a new file system from the snapshot
47# 	3. Verify the cloned file system is writable
48#
49
50verify_runnable "both"
51
52# Setup array, 4 elements as a group, refer to:
53# i+0: name of a snapshot
54# i+1: mountpoint of the snapshot
55# i+2: clone created from the snapshot
56# i+3: mountpoint of the clone
57
58set -A args "$SNAPFS" "$SNAPDIR" "$TESTPOOL/$TESTCLONE" "$TESTDIR.0" \
59	"$SNAPFS1" "$SNAPDIR3" "$TESTPOOL/$TESTCLONE1" "" \
60	"$SNAPFS2" "$SNAPDIR2" "$TESTPOOL1/$TESTCLONE2" "$TESTDIR.2"
61
62function setup_all
63{
64	if is_freebsd; then
65		# Pool creation on zvols is forbidden by default.
66		# Save and the current setting.
67		typeset _saved=$(get_tunable VOL_RECURSIVE)
68		log_must set_tunable64 VOL_RECURSIVE 1
69	fi
70	create_pool $TESTPOOL1 ${ZVOL_DEVDIR}/$TESTPOOL/$TESTVOL
71	if is_freebsd; then
72		# Restore the previous setting.
73		log_must set_tunable64 VOL_RECURSIVE $_saved
74	fi
75	log_must zfs create $TESTPOOL1/$TESTFS
76	log_must zfs set mountpoint=$TESTDIR2 $TESTPOOL1/$TESTFS
77
78	return 0
79}
80
81function cleanup_all
82{
83	typeset -i i=0
84
85	i=0
86	while (( i < ${#args[*]} )); do
87		snapexists ${args[i]} && \
88			destroy_dataset "${args[i]}" "-Rf"
89
90		[[ -d ${args[i+3]} ]] && \
91			log_must rm -rf ${args[i+3]}
92
93		[[ -d ${args[i+1]} ]] && \
94			log_must rm -rf ${args[i+1]}
95
96		(( i = i + 4 ))
97	done
98
99	datasetexists $TESTPOOL1/$TESTFS && \
100		destroy_dataset $TESTPOOL1/$TESTFS -f
101
102	destroy_pool $TESTPOOL1
103
104	[[ -d $TESTDIR2 ]] && \
105		log_must rm -rf $TESTDIR2
106
107	return 0
108}
109
110log_assert "Verify a cloned file system is writable."
111
112log_onexit cleanup_all
113
114setup_all
115
116[[ -n $TESTDIR ]] && \
117    log_must rm -rf $TESTDIR/* > /dev/null 2>&1
118
119typeset -i COUNT=10
120typeset -i i=0
121
122for mtpt in $TESTDIR $TESTDIR2 ; do
123	log_note "Populate the $mtpt directory (prior to snapshot)"
124	typeset -i j=1
125	while [[ $j -le $COUNT ]]; do
126		log_must file_write -o create -f $mtpt/before_file$j \
127			-b $BLOCKSZ -c $NUM_WRITES -d $j
128
129		(( j = j + 1 ))
130	done
131done
132
133while (( i < ${#args[*]} )); do
134	#
135	# Take a snapshot of the test file system.
136	#
137	log_must zfs snapshot ${args[i]}
138
139	#
140	# Clone a new file system from the snapshot
141	#
142	log_must zfs clone ${args[i]} ${args[i+2]}
143	if [[ -n ${args[i+3]} ]] ; then
144		log_must zfs set mountpoint=${args[i+3]} ${args[i+2]}
145
146		FILE_COUNT=`ls -Al ${args[i+3]} | grep -v "total" \
147		    | grep -v "\.zfs" | wc -l`
148		if [[ $FILE_COUNT -ne $COUNT ]]; then
149			ls -Al ${args[i+3]}
150			log_fail "AFTER: ${args[i+3]} contains $FILE_COUNT files(s)."
151		fi
152
153		log_note "Verify the ${args[i+3]} directory is writable"
154		j=1
155		while [[ $j -le $COUNT ]]; do
156			log_must file_write -o create -f ${args[i+3]}/after_file$j \
157			-b $BLOCKSZ -c $NUM_WRITES -d $j
158			(( j = j + 1 ))
159		done
160
161		FILE_COUNT=`ls -Al ${args[i+3]}/after* | grep -v "total" | wc -l`
162		if [[ $FILE_COUNT -ne $COUNT ]]; then
163			ls -Al ${args[i+3]}
164			log_fail "${args[i+3]} contains $FILE_COUNT after* files(s)."
165		fi
166	fi
167
168	(( i = i + 4 ))
169done
170
171log_pass "The clone file system is writable."
172