mirror of
https://github.com/linux-apfs/apfstests.git
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Dave Chinner
1ff4192932
Fully scripted conversion, see script in initial SPDX license commit message. Signed-off-by: Dave Chinner <dchinner@redhat.com>
79 lines
1.5 KiB
Bash
Executable File
79 lines
1.5 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2013 Oracle. All Rights Reserved.
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#
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# FS QA Test No. 021
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#
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# A regression test of running btrfs balance and defrag concurrently.
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#
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# The test aims to trigger snapshot-aware defrag path in endio by
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# running balance, which is not expected and leads to a crash.
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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 # failure is the default!
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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 $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# real QA test starts here
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run_test()
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{
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$BTRFS_UTIL_PROG balance start $SCRATCH_MNT >> $seqres.full &
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sleep 0.5
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find $SCRATCH_MNT -type f -print0 | xargs -0 \
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$BTRFS_UTIL_PROG filesystem defrag -f
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sync
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wait
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}
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch
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rm -f $seqres.full
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_scratch_mkfs > /dev/null 2>&1
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_scratch_mount
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# This is going to reproduce a race senario between balance and the writeback
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# of snapshot-aware defragment.
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# we first create a few files to get higher btree height.
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for j in `seq 0 100`; do
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touch $SCRATCH_MNT/padding-$j
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done
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# Get 50 files with fragments by using backwards writes.
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for j in `seq 0 50`; do
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for i in `seq 20 -1 1`; do
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$XFS_IO_PROG -f -d -c "pwrite $(($i * 4096)) 4096" \
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$SCRATCH_MNT/foo-$j >> $seqres.full | _filter_xfs_io
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done
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done
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# Make sure that our metadata makes it self on disk.
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sync
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run_test
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# success, all done
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echo "Silence is golden"
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status=0
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exit
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