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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
a860a167d8
fstests only supports Linux, so get rid of this unnecessary predicate. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
72 lines
2.2 KiB
Bash
Executable File
72 lines
2.2 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2019 Red Hat, Inc. All Rights Reserved.
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#
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# FS QA Test No. 536
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#
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# Test a some write patterns for stale data exposure after a crash. XFS is
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# historically susceptible to this problem in the window between delalloc to
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# physical extent conversion and writeback completion.
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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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# 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 generic
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_require_scratch
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_require_scratch_shutdown
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# create a small fs and initialize free blocks with a unique pattern
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_scratch_mkfs_sized $((1024 * 1024 * 100)) >> $seqres.full 2>&1
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_scratch_mount
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$XFS_IO_PROG -f -c "pwrite -S 0xab 0 100m" -c fsync $SCRATCH_MNT/spc \
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>> $seqres.full 2>&1
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rm -f $SCRATCH_MNT/spc
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$XFS_IO_PROG -c fsync $SCRATCH_MNT
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# Write a couple files with particular writeback sequences. The first writes a
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# delalloc extent and triggers writeback on the last page. The second triggers
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# post-eof preallocation (on XFS), write extends into the preallocation and
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# triggers writeback of the last written page.
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$XFS_IO_PROG -fc "pwrite 0 256k" -c "sync_range -w 252k 4k" \
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-c "sync_range -a 252k 4k" $SCRATCH_MNT/file.1 >> $seqres.full 2>&1
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$XFS_IO_PROG -fc "pwrite 0 260k" -c fsync -c "pwrite 1536k 4k" \
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-c "sync_range -w 1536k 4k" -c "sync_range -a 1536k 4k" \
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$SCRATCH_MNT/file.2 >> $seqres.full 2>&1
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# Shut down before any other writeback completes. Flush the log to persist inode
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# size updates.
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_scratch_shutdown -f
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# Now search both files for stale bytes. The region prior to the last page in
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# the first file should be zero filled. The region between the two writes to the
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# second file should also be zero filled.
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_scratch_cycle_mount
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echo file.1 | tee -a $seqres.full
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hexdump $SCRATCH_MNT/file.1 | tee -a $seqres.full | grep ab
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echo file.2 | tee -a $seqres.full
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hexdump $SCRATCH_MNT/file.2 | tee -a $seqres.full | grep ab
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status=0
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exit
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