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>
90 lines
2.0 KiB
Bash
Executable File
90 lines
2.0 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2016 Fujitsu. All Rights Reserved.
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#
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# FS QA Test 132
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#
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# Check if false ENOSPC will happen when parallel buffer write happens
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# The problem is caused by incorrect metadata reservation for any buffered
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# write whose max extent size is not 128M (including compression and in-band
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# dedupe).
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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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kill $pids &> /dev/null
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wait
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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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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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# Modify as appropriate.
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch
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# Use small filesystem to trigger the bug more easily
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# It's highly recommened to run this test case with MKFS_OPTIONS="-n 64k"
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# to further increase the possibility
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# Since the false ENOSPC happens due to incorrect metadata reservation,
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# larger nodesize and small fs will make it much easier to reproduce
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_scratch_mkfs_sized $((512 * 1024 * 1024)) >> $seqres.full 2>&1
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# Recommended to use MOUNT_OPTIONS="-o compress" to trigger the bug
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_scratch_mount
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sleep_time=$(($TIME_FACTOR * 30))
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loop_writer()
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{
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offset=$1
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len=$2
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file=$3
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while true; do
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# Only need stderr, and we need to specify small block size
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# but still large enough trigger compression
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$XFS_IO_PROG -c "pwrite -b 8K $offset $len" $file > /dev/null
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done
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}
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touch $SCRATCH_MNT/testfile
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# Start 2 writter writting into the same file
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# The file is 142M, which is smaller than 1/2 of the filesystem,
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# so no other cause can lead to ENOSPC.
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loop_writer 0 128M $SCRATCH_MNT/testfile &
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pids=$!
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loop_writer 128M 16M $SCRATCH_MNT/testfile &
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pids="$pids $!"
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sleep $sleep_time
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kill $pids
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wait
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# Wait all writers really exits
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while ps aux | grep "$SCRATCH_MNT" | grep -qv grep; do
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sleep 1
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done
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echo "Silence is golden"
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status=0
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exit
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