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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>
91 lines
2.7 KiB
Bash
Executable File
91 lines
2.7 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2018 Red Hat, Inc. All Rights Reserved.
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#
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# FS QA Test 443
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#
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# Regression test for the XFS rmapbt based extent swap algorithm. The extent
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# swap algorithm for rmapbt=1 filesystems unmaps/remaps individual extents to
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# rectify the rmapbt for each extent swapped between inodes. If one of the
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# inodes happens to straddle the extent <-> btree format boundary (which can
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# vary depending on inode size), the unmap/remap sequence can bounce the inodes
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# back and forth between formats many times during the swap. Since extent ->
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# btree format conversion requires a block allocation, this can consume more
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# blocks than expected, lead to block reservation overrun and free space
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# accounting inconsistency.
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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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. ./common/punch
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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_test_program "punch-alternating"
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_require_xfs_io_command "falloc"
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_require_xfs_io_command "fpunch"
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_require_xfs_io_command "swapext"
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_scratch_mkfs | _filter_mkfs >> $seqres.full 2> $tmp.mkfs
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_scratch_mount
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# get fs block size
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. $tmp.mkfs
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file1=$SCRATCH_MNT/file1
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file2=$SCRATCH_MNT/file2
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# The goal is run an extent swap where one of the associated files has the
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# minimum number of extents to remain in btree format. First, create a couple
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# files with large enough extent counts (200 or so should be plenty) to ensure
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# btree format on the largest possible inode size filesystems.
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$XFS_IO_PROG -fc "falloc 0 $((400 * dbsize))" $file1
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$here/src/punch-alternating $file1
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$XFS_IO_PROG -fc "falloc 0 $((400 * dbsize))" $file2
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$here/src/punch-alternating $file2
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# Now run an extent swap at every possible extent count down to 0. Depending on
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# inode size, one of these swaps will cover the boundary case between extent and
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# btree format.
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for i in $(seq 1 2 399); do
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# punch one extent from the tmpfile and swap
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$XFS_IO_PROG -c "fpunch $((i * dbsize)) $dbsize" $file2
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$XFS_IO_PROG -c "swapext $file2" $file1
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# punch the same extent from the old fork (now in file2) to resync the
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# extent counts and repeat
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$XFS_IO_PROG -c "fpunch $((i * dbsize)) $dbsize" $file2
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done
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# sanity check that no extents are left over
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$XFS_IO_PROG -c "fiemap" $file1 | _filter_fiemap
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$XFS_IO_PROG -c "fiemap" $file2 | _filter_fiemap
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# failure results in fs corruption and possible assert failure
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echo Silence is golden
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# success, all done
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status=0
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exit
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