2 # FSQA Test No. btrfs/011
4 # Test of the btrfs replace operation.
6 # The amount of tests done depends on the number of devices in the
7 # SCRATCH_DEV_POOL. For full test coverage, at least 5 devices should
8 # be available (e.g. 5 partitions).
10 # The source and target devices for the replace operation are
11 # arbitrarily chosen out of SCRATCH_DEV_POOl. Since the target device
12 # mustn't be smaller than the source device, the requirement for this
13 # test is that all devices have _exactly_ the same size. If this is
14 # not the case, this test is not run.
16 # To check the filesystems after replacing a device, a scrub run is
17 # performed, a btrfsck run, and finally the filesystem is remounted.
19 #-----------------------------------------------------------------------
20 # Copyright (C) 2013 STRATO. All rights reserved.
22 # This program is free software; you can redistribute it and/or
23 # modify it under the terms of the GNU General Public License as
24 # published by the Free Software Foundation.
26 # This program is distributed in the hope that it would be useful,
27 # but WITHOUT ANY WARRANTY; without even the implied warranty of
28 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 # GNU General Public License for more details.
31 # You should have received a copy of the GNU General Public License
32 # along with this program; if not, write the Free Software Foundation,
33 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
35 #-----------------------------------------------------------------------
39 seqres=$RESULT_DIR/$seq
40 echo "QA output created by $seq"
49 if [ $noise_pid -ne 0 ] && ps -p $noise_pid | grep -q $noise_pid; then
55 trap "_cleanup; exit \$status" 0 1 2 3 15
57 # get standard environment, filters and checks
61 # real QA test starts here
63 _require_scratch_nocheck
64 _require_scratch_dev_pool 4
65 _require_btrfs_dump_super
70 echo "*** test btrfs replace"
74 local mkfs_options="$1"
75 local num_devs4raid="$2"
76 local with_cancel="$3"
78 local source_dev="`echo ${SCRATCH_DEV_POOL} | awk '{print $1}'`"
79 local target_dev="`echo ${SCRATCH_DEV_POOL} | awk '{print $NF}'`"
83 echo "---------workout \"$1\" $2 $3 $4-----------" >> $seqres.full
85 if [ "`echo $SCRATCH_DEV_POOL | wc -w`" -lt `expr $num_devs4raid + 1` ]; then
86 echo "Skip workout $1 $2 $3 $4" >> $seqres.full
87 echo "Too few devices in SCRATCH_DEV_POOL $SCRATCH_DEV_POOL, required: " `expr $num_devs4raid + 1` >> $seqres.full
91 # use min number of disks in order to fill up the disk to replace
93 local used_devs_without_1st="`echo $SCRATCH_DEV_POOL | \
94 awk '{ORS=\" \"; for (i = 2; i <= (NF - 1 < '$num_devs4raid' ? NF - 1 : '$num_devs4raid'); i++) print $i}'`"
96 # _scratch_mkfs adds the 1st device again (which is $SCRATCH_DEV)
97 _scratch_mkfs $mkfs_options $used_devs_without_1st >> $seqres.full 2>&1 || _fail "mkfs failed"
99 # create a filesystem on the target device just for the sake of
100 # being able to query its size with btrfs-show-super
101 $MKFS_BTRFS_PROG $MKFS_OPTIONS $target_dev >> $seqres.full 2>&1 || _fail "mkfs target_dev failed"
103 # The source and target devices for the replace operation are
104 # arbitrarily chosen out of the pool. Since the target device mustn't
105 # be smaller than the source device, the requirement for this test is
106 # that all devices have _exactly_ the same size. If this is not the
107 # case, this test is not run.
108 local num_lines=`$BTRFS_SHOW_SUPER_PROG $SCRATCH_DEV $used_devs_without_1st $target_dev | grep dev_item.total_bytes | uniq | wc -l`
109 if [ $num_lines -gt 1 ]; then
110 _notrun "Different device sizes detected"
113 if [ `$BTRFS_SHOW_SUPER_PROG $SCRATCH_DEV | grep dev_item.total_bytes | awk '{print $2}'` -lt 2500000000 ]; then
114 _notrun "device size too small"
119 echo "$BTRFS_UTIL_PROG filesystem show" >> $seqres.full
120 $BTRFS_UTIL_PROG filesystem show >> $seqres.full
122 # Generate metadata and some minimal user data, generate 500 times
123 # 20K extents in the data chunk and fill up metadata with inline
125 for i in `seq 1 500`; do
126 _ddt of=$SCRATCH_MNT/l$i bs=16385 count=1
127 _ddt of=$SCRATCH_MNT/s$i bs=3800 count=1
128 done > /dev/null 2>&1
130 # Generate a template once and quickly copy it multiple times.
131 _ddt of=$SCRATCH_MNT/t0 bs=1M count=1 > /dev/null 2>&1
133 if [ "${quick}Q" = "thoroughQ" ]; then
134 # The intention of this "thorough" test is to increase
135 # the probability of random errors, in particular in
136 # conjunction with the background noise generator and
137 # a sync call while the replace operation is ongoing.
139 elif [ "${with_cancel}Q" = "cancelQ" ]; then
140 # The goal is to produce enough data to prevent that the
141 # replace operation finishes before the cancel request
148 # since the available size was tested before, do not tolerate
150 for i in `seq $fssize`; do
151 cp $SCRATCH_MNT/t0 $SCRATCH_MNT/t$i || _fail "cp failed"
152 done > /dev/null 2>> $seqres.full
155 btrfs_replace_test $source_dev $target_dev "" $with_cancel $quick
156 _scratch_unmount > /dev/null 2>&1
158 if echo $mkfs_options | egrep -qv "raid1|raid5|raid6|raid10" || \
159 [ "${with_cancel}Q" = "cancelQ" ]; then
160 # the -r option has no effect without mirrors, skip -r test
161 # in this case, and if only the canceling should be tested
166 # One more time with the '-r' option this time. Instead of wasting
167 # time to populate the filesystem with data again, use the
168 # existing filesystem in the state as it is after the previous
170 # If possible, use a strategy to select the source and target
171 # device so that we really change bits on the target disk, see
174 # The default: For the 2nd run, the new target drive is the old
175 # source drive, and the new source drive is the old target drive.
176 # Since except for the noise data, the copied data is already on
177 # the new target disk (which is the old source disk), this is not
178 # optimal to check whether data is copied correctly.
179 local tmp_dev="$source_dev"
180 source_dev="$target_dev"
181 target_dev="$tmp_dev"
183 # If we have at least one more device in the SCRATCH_DEV_POOL than
184 # used so far, use one of those for the new target devive.
185 if [ "`echo $SCRATCH_DEV_POOL | wc -w`" -gt `expr $num_devs4raid + 1` ]; then
186 target_dev="`echo ${SCRATCH_DEV_POOL} | awk '{print $(NF-1)}'`"
189 # If the filesystem is built out of more than one devices, use a
190 # different source device for this round.
191 if [ $num_devs4raid -gt 1 ]; then
192 source_dev="`echo ${SCRATCH_DEV_POOL} | awk '{print $2}'`"
195 # Mount similar to _scratch_mount, but since the SCRATCH_DEV (the
196 # 1st device in SCRATCH_DEV_POOL) was replaced by the previous
197 # btrfs replace operation, substitute SCRATCH_DEV with a device
198 # that is known to be part of the SCRATCH_MNT filesystem.
199 _mount -t $FSTYP `_scratch_mount_options | sed "s&${SCRATCH_DEV}&${source_dev}&"`
200 if [ $? -ne 0 ]; then
205 btrfs_replace_test $source_dev $target_dev "-r" $with_cancel $quick
206 _scratch_unmount > /dev/null 2>&1
211 local source_dev="$1"
212 local target_dev="$2"
213 local replace_options="$3"
214 local with_cancel="$4"
217 # generate some (slow) background traffic in parallel to the
218 # replace operation. It is not a problem if cat fails early
220 cat /dev/urandom | od > $SCRATCH_MNT/noise 2>> $seqres.full &
223 if [ "${with_cancel}Q" = "cancelQ" ]; then
224 # background the replace operation (no '-B' option given)
225 echo "$BTRFS_UTIL_PROG replace start -f $replace_options $source_dev $target_dev $SCRATCH_MNT" >> $seqres.full
226 $BTRFS_UTIL_PROG replace start -f $replace_options $source_dev $target_dev $SCRATCH_MNT >> $seqres.full 2>&1 || _fail "btrfs replace start failed"
228 echo "$BTRFS_UTIL_PROG replace cancel $SCRATCH_MNT" >> $seqres.full
229 $BTRFS_UTIL_PROG replace cancel $SCRATCH_MNT >> $seqres.full 2>&1 || _fail "btrfs replace cancel failed"
231 # 'replace status' waits for the replace operation to finish
232 # before the status is printed
233 $BTRFS_UTIL_PROG replace status $SCRATCH_MNT > $tmp.tmp 2>&1
234 cat $tmp.tmp >> $seqres.full
235 grep -q canceled $tmp.tmp || _fail "btrfs replace status (canceled) failed"
237 if [ "${quick}Q" = "thoroughQ" ]; then
238 # On current hardware, the thorough test runs
239 # more than a second. This is a chance to force
240 # a sync in the middle of the replace operation.
241 (sleep 1; sync) > /dev/null 2>&1 &
243 echo "$BTRFS_UTIL_PROG replace start -Bf $replace_options $source_dev $target_dev $SCRATCH_MNT" >> $seqres.full
244 $BTRFS_UTIL_PROG replace start -Bf $replace_options $source_dev $target_dev $SCRATCH_MNT >> $seqres.full 2>&1 || _fail "btrfs replace start failed"
246 $BTRFS_UTIL_PROG replace status $SCRATCH_MNT > $tmp.tmp 2>&1
247 cat $tmp.tmp >> $seqres.full
248 grep -q finished $tmp.tmp || _fail "btrfs replace status (finished) failed"
251 if ps -p $noise_pid | grep -q $noise_pid; then
252 kill -TERM $noise_pid 2> /dev/null
257 # scrub tests on-disk data, that's the reason for the sync.
258 # With the '-B' option (don't background), any type of error causes
259 # exit values != 0, including detected correctable and uncorrectable
260 # errors on the device.
262 $BTRFS_UTIL_PROG scrub start -B $SCRATCH_MNT >> $seqres.full 2>&1 || _fail "btrfs scrub failed"
264 # Two tests are performed, the 1st is to btrfsck the filesystem,
265 # and the 2nd test is to mount the filesystem.
266 # Usually _check_btrfs_filesystem would perform the mount test,
267 # but it gets confused by the mount output that shows SCRATCH_MNT
268 # mounted but not being mounted to SCRATCH_DEV. This happens
269 # because in /proc/mounts the 2nd device of the filesystem is
270 # shown after the replace operation. Let's just do the mount
271 # test manually after _check_btrfs_filesystem is finished.
272 _scratch_unmount > /dev/null 2>&1
273 if [ "${with_cancel}Q" != "cancelQ" ]; then
274 # after the replace operation, use the target_dev for everything
275 echo "$BTRFS_UTIL_PROG filesystem show -d" >> $seqres.full
276 $BTRFS_UTIL_PROG filesystem show -d >> $seqres.full
277 echo "$BTRFS_UTIL_PROG filesystem show" >> $seqres.full
278 $BTRFS_UTIL_PROG filesystem show >> $seqres.full
279 echo "_check_btrfs_filesystem $target_dev" >> $seqres.full
280 _check_btrfs_filesystem $target_dev
281 _mount -t $FSTYP `_scratch_mount_options | sed "s&${SCRATCH_DEV}&${target_dev}&"`
283 _check_btrfs_filesystem $source_dev
288 workout "-m single -d single" 1 no quick
289 workout "-m single -d single -M" 1 no quick
290 workout "-m dup -d single" 1 no quick
291 workout "-m dup -d single" 1 cancel quick
292 workout "-m dup -d dup -M" 1 no quick
293 workout "-m raid0 -d raid0" 2 no quick
294 workout "-m raid1 -d raid1" 2 no thorough
295 workout "-m raid5 -d raid5" 2 no quick
296 workout "-m raid6 -d raid6" 3 no quick
297 workout "-m raid10 -d raid10" 4 no quick