File: ziltest.sh

package info (click to toggle)
zfs-linux 0.6.5.9-5
  • links: PTS, VCS
  • area: contrib
  • in suites: stretch
  • size: 15,464 kB
  • ctags: 17,824
  • sloc: ansic: 182,812; sh: 11,864; python: 1,683; makefile: 1,586; asm: 1,302; perl: 679; sed: 13; awk: 5
file content (305 lines) | stat: -rwxr-xr-x 7,986 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
#!/bin/bash
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License, Version 1.0 only
# (the "License").  You may not use this file except in compliance
# with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
# Linux version
#
# To run just type ziltest.sh
#
# - creates a 200MB pool in /var/tmp/
# - prints information on:
#	working set files
#	ZIL records written
#	ZIL block usage
#	verification results
# - returns status of 0 on success
#
##########################################################################
#
# Here's how it all works:
#
# The general idea is to build up
# an intent log from a bunch of diverse user commands
# without actually committing them to the file system.
# Then copy the file system, replay the intent
# log and compare the file system and the copy.
#
# To enable this automated testing of the intent log
# requires some but minimal support from the file system.
# In particular, a "freeze" command is required to flush
# the in-flight transactions; to stop the actual
# committing of transactions; and to ensure no deltas are
# discarded. All deltas past a freeze point are kept for
# replay and comparison later. Here is the flow:
#
#	create an empty file system (FS)
#	freeze FS
#	run various user commands that create files, directories and ACLs
#	copy FS to temporary location (COPY)
#	unmount filesystem
#	<at this stage FS is empty again and unfrozen, and the
#	 intent log contains a complete set of deltas to replay it>
#	remount FS <which replays the intent log>
#	compare FS against the COPY
#

PATH=/usr/bin
PATH=$PATH:/usr/sbin
PATH=$PATH:/bin
PATH=$PATH:/sbin
export PATH

# ====================================================================
# SETUP
# ====================================================================
CMD=$(basename "$0")
POOL=ziltestpool.$$
DEVSIZE=${DEVSIZE-200m}
POOLDIR=/var/tmp
POOLFILE=$POOLDIR/ziltest_poolfile.$$
SLOGFILE=$POOLDIR/ziltest_slog.$$
FS=$POOL/fs
ROOT=/$FS
COPY=/var/tmp/${POOL}
KEEP=no

cleanup()
{
	zfs destroy -rf $FS
	echo "$CMD: pool I/O summary & status:"
	echo "----------------------------------------------------"
	zpool iostat $POOL
	echo
	zpool status $POOL
	echo "----------------------------------------------------"
	echo
	zpool destroy -f $POOL
	rm -rf $COPY
	rm $POOLFILE $SLOGFILE
}

bail()
{
	test $KEEP = no && cleanup
	echo "$1"
	exit 1
}

test $# -eq 0 || bail "usage: $CMD"

# ====================================================================
# PREP
#
# Create a pool using a file based vdev
# Create a destination for runtime copy of FS
# Freeze transaction syncing in the pool
# ====================================================================
truncate -s "$DEVSIZE" $POOLFILE || bail "can't make $POOLFILE"
truncate -s "$DEVSIZE" $SLOGFILE || bail "can't make $SLOGFILE"
zpool create $POOL $POOLFILE log $SLOGFILE || bail "can't create pool
$POOL"
zpool list $POOL

zfs set compression=on $POOL || bail "can't enable compression on $POOL"
zfs create $FS || bail "can't create $FS"
mkdir -p $COPY || bail "can't create $COPY"

#
# This dd command works around an issue where ZIL records aren't created
# after freezing the pool unless a ZIL header already exists. Create a file
# synchronously to force ZFS to write one out.
#
dd if=/dev/zero of=$ROOT/sync conv=fdatasync,fsync bs=1 count=1 2> /dev/null

zpool freeze $POOL || bail "can't freeze $POOL"

# ====================================================================
# TESTS
#
# Add operations here that will add commit records to the ZIL
#
# Use $ROOT for all file name prefixes
# ====================================================================

#
# TX_CREATE
#
touch $ROOT/a

#
# TX_RENAME
#
mv $ROOT/a $ROOT/b

#
# TX_SYMLINK
#
touch $ROOT/c
ln -s $ROOT/c $ROOT/d

#
# TX_LINK
#
touch $ROOT/e
ln $ROOT/e $ROOT/f

#
# TX_MKDIR
#
mkdir $ROOT/dir_to_delete

#
# TX_RMDIR
#
rmdir $ROOT/dir_to_delete

#
# Create a simple validation payload
#
PAYLOAD=$(modinfo -F filename zfs)
cp "$PAYLOAD" "$ROOT/payload"
CHECKSUM_BEFORE=$(sha256sum -b "$PAYLOAD")

#
# TX_WRITE (small file with ordering)
#
if is_linux; then
	cp /proc/self/mounts $ROOT/small_file
else
	cp /etc/mtab $ROOT/small_file
fi
cp /etc/profile $ROOT/small_file

#
# TX_CREATE, TX_MKDIR, TX_REMOVE, TX_RMDIR
#
cp -R /usr/share/dict $ROOT
rm -rf $ROOT/dict

#
# TX_SETATTR
#
touch $ROOT/setattr
chmod 567 $ROOT/setattr
chgrp root $ROOT/setattr
touch -cm -t 201311271200 $ROOT/setattr

#
# TX_TRUNCATE (to zero)
#
cp /etc/services $ROOT/truncated_file
> $ROOT/truncated_file

#
# Write to an open but removed file
#
(sleep 2; date) > $ROOT/date & sleep 1; rm $ROOT/date; wait

#
# TX_WRITE (large file)
#
dd if=/usr/share/lib/termcap of=$ROOT/large bs=128k oflag=sync 2> /dev/null

#
# Write zeroes, which compresss to holes, in the middle of a file
#
dd if=$POOLFILE of=$ROOT/holes.1 bs=128k count=8 2> /dev/null
dd if=/dev/zero of=$ROOT/holes.1 bs=128k count=2 2> /dev/null

dd if=$POOLFILE of=$ROOT/holes.2 bs=128k count=8 2> /dev/null
dd if=/dev/zero of=$ROOT/holes.2 bs=128k count=2 oseek=2 2> /dev/null

dd if=$POOLFILE of=$ROOT/holes.3 bs=128k count=8 2> /dev/null
dd if=/dev/zero of=$ROOT/holes.3 bs=128k count=2 oseek=2 conv=notrunc 2> /dev/null

#
# TX_MKXATTR
#
mkdir $ROOT/xattr.dir
attr -qs fileattr -V HelloWorld $ROOT/xattr.dir
attr -qs tmpattr -V HelloWorld $ROOT/xattr.dir
attr -qr tmpattr $ROOT/xattr.dir

touch $ROOT/xattr.file
attr -qs fileattr -V HelloWorld $ROOT/xattr.file
attr -qs tmpattr -V HelloWorld $ROOT/xattr.file
attr -qr tmpattr $ROOT/xattr.file
rm $ROOT/xattr.file


# ====================================================================
# REPLAY
# ====================================================================

KEEP=yes	# keep stuff around if we fail, so we can look at it

cd $ROOT
find . | cpio -pdmu --quiet $COPY
echo
cd /

zfs unmount $FS || bail "can't unmount $FS"

echo "$CMD: transactions to replay:"
echo "----------------------------------------------------"
zdb -ivv $FS || bail "can't run zdb on $POOL"
echo "----------------------------------------------------"
echo

#
# Export and reimport the pool to unfreeze it and claim log blocks.
# It has to be import -f because we can't write a frozen pool's labels!
#
zpool export $POOL || bail "can't export $POOL"
zpool import -f -d $POOLDIR $POOL || bail "can't import $POOL"

# ====================================================================
# VERIFY
# ====================================================================

echo "$CMD: current block usage:"
echo "----------------------------------------------------"
zdb -bcv $POOL || bail "blocks were leaked!"
echo "----------------------------------------------------"
echo

echo "$CMD: Copy of xattrs:"
echo "----------------------------------------------------"
attr -l $ROOT/xattr.dir || bail "can't list xattrs"
echo "----------------------------------------------------"
echo

echo "$CMD: Results of workingset diff:"
echo "----------------------------------------------------"
diff -r $ROOT $COPY > /dev/null || diff -r $ROOT $COPY || bail "replay diffs!"

echo "$CHECKSUM_BEFORE" | sha256sum -c || bail "payload checksums don't match"
echo "payload checksum matched"
echo "----------------------------------------------------"
echo

cleanup

exit 0