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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>
90 lines
1.6 KiB
Bash
Executable File
90 lines
1.6 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2016-2017 CTERA Networks. All Rights Reserved.
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#
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# FSQA Test No. 047
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#
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# Test hardlink breakage after unlink and mount cycle
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#
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# - file A and B are hardlinked in lower
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# - modify A to trigger copy up and index lower
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# - unlink A and mount cycle
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# - check that B still contains the modified data
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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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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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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 overlay
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_require_scratch
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_require_scratch_feature index
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rm -f $seqres.full
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_scratch_mkfs >>$seqres.full 2>&1
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# Create 2 hardlinked files in lower
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lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
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mkdir -p $lowerdir
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echo "zero" >> $lowerdir/foo
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ln $lowerdir/foo $lowerdir/bar
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# Enable overlay index feature to prevent breaking hardlinks on copy up
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_scratch_mount -o index=on
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rm -f $tmp.*
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foo=$SCRATCH_MNT/foo
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bar=$SCRATCH_MNT/bar
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FILES="$foo $bar"
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echo "== Before copy up =="
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cat $foo
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# Modify content of one of the hardlinks
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echo "one" >> $bar
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echo "== After write one =="
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cat $foo
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# Unlink the copied up hardlink
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rm $bar
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echo "== After unlink one =="
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cat $foo
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# Verify that the hardlinks survive a mount cycle
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_scratch_cycle_mount index=on
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echo "== After mount cycle =="
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cat $foo
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# Drop caches to get the copied up hardlink out of cache
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echo 3 > /proc/sys/vm/drop_caches
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# Modify content of the other hardlink
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echo "two" >> $foo
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echo "== After write two =="
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cat $foo
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status=0
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exit
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