mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Chandan Rajendra
1ffa40385a
The following scenario can occur when running btrfs/066,
Task A Task B Task C
run_test()
- Execute _btrfs_stress_subvolume()
in a background shell.
_btrfs_stress_subvolme()
...
- fork & exec "mount"
Mount subvolume on directory in $TEST_DIR
- Wait for fsstress to finish do_mount()
- kill shell process executing - btrfs_mount()
_btrfs_stress_subvolume()
i.e. Task B.
- Init process becomes the parent
of "subvolume mount" task
i.e. Task C.
- In case subvolume is mounted
(which is not the case),
unmount it.
- Complete mounting subvolume
Hence on the completion of one iteration of run_test(), the subvolume
created inside the filesystem on $SCRATCH_DEV continues to be mounted on
$TEST_DIR/$seq.mnt. Subsequent invocations of run_test() (called for
remaining Btrfs profile configs) fail during _scratch_pool_mkfs.
Instead of killing the 'subvolume stress' task this commit makes
_btrfs_stress_subvolume() to break out of the loop when a file exists
on the filesystem. The commit also makes relevant changes to other
users of _btrfs_stress_subvolume() i.e. btrfs/060, btrfs/065,
btrfs/067 & btrfs/068.
Suggested-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
122 lines
3.3 KiB
Bash
Executable File
122 lines
3.3 KiB
Bash
Executable File
#! /bin/bash
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# FSQA Test No. btrfs/067
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#
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# Run btrfs subvolume create/mount/umount/delete and btrfs defrag
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# operation simultaneously, with fsstress running in background.
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#
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#-----------------------------------------------------------------------
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# Copyright (C) 2014 Red Hat Inc. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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#-----------------------------------------------------------------------
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# real QA test starts here
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_supported_fs btrfs
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_supported_os Linux
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# we check scratch dev after each loop
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_require_scratch_nocheck
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_require_scratch_dev_pool 4
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_btrfs_get_profile_configs
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rm -f $seqres.full
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run_test()
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{
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local mkfs_opts=$1
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local with_compress=$2
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local subvol_mnt=$TEST_DIR/$seq.mnt
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local stop_file=$TEST_DIR/$seq.stop.$$
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echo "Test $mkfs_opts with $with_compress" >>$seqres.full
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_scratch_pool_mkfs $mkfs_opts >>$seqres.full 2>&1
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# make sure we created btrfs with desired options
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if [ $? -ne 0 ]; then
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echo "mkfs $mkfs_opts failed"
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return
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fi
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_scratch_mount >>$seqres.full 2>&1
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args=`_scale_fsstress_args -p 20 -n 100 $FSSTRESS_AVOID -d $SCRATCH_MNT/stressdir`
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echo "Run fsstress $args" >>$seqres.full
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$FSSTRESS_PROG $args >/dev/null 2>&1 &
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fsstress_pid=$!
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# make sure the stop sign is not there
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rm -f $stop_file
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echo -n "Start subvolume worker: " >>$seqres.full
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_btrfs_stress_subvolume $SCRATCH_DEV $SCRATCH_MNT subvol_$$ $subvol_mnt $stop_file >/dev/null 2>&1 &
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subvol_pid=$!
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echo "$subvol_pid" >>$seqres.full
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echo -n "Start defrag worker: " >>$seqres.full
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_btrfs_stress_defrag $SCRATCH_MNT $with_compress >/dev/null 2>&1 &
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defrag_pid=$!
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echo "$defrag_pid" >>$seqres.full
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echo "Wait for fsstress to exit and kill all background workers" >>$seqres.full
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wait $fsstress_pid
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touch $stop_file
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kill $defrag_pid
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wait
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# wait for btrfs defrag process to exit, otherwise it will block umount
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while ps aux | grep "btrfs filesystem defrag" | grep -qv grep; do
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sleep 1
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done
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echo "Scrub the filesystem" >>$seqres.full
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$BTRFS_UTIL_PROG scrub start -B $SCRATCH_MNT >>$seqres.full 2>&1
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if [ $? -ne 0 ]; then
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echo "Scrub find errors in \"$mkfs_opts\" test" | tee -a $seqres.full
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fi
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# in case the subvolume is still mounted
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$UMOUNT_PROG $subvol_mnt >/dev/null 2>&1
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_scratch_unmount
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# we called _require_scratch_nocheck instead of _require_scratch
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# do check after test for each profile config
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_check_scratch_fs
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}
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echo "Silence is golden"
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for t in "${_btrfs_profile_configs[@]}"; do
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run_test "$t" nocompress
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run_test "$t" compress
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done
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status=0
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exit
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