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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2015 SUSE Linux Products GmbH. All Rights Reserved.
#
# FSQA Test No. 107
#
# Test that when we have a file with multiple hard links belonging to different
# parent directories, if we remove one of those links, fsync the file using one
# of its other links (that has a parent directory different from the one we
# removed a link from), power fail and then replay the fsync log/journal, the
# hard link we removed is not available anymore and all the filesystem metadata
# is in a consistent state.
#
. ./common/preamble
_begin_fstest auto quick metadata log
# Override the default cleanup function.
_cleanup()
{
_cleanup_flakey
rm -f $tmp.*
}
# Import common functions.
. ./common/filter
. ./common/dmflakey
# real QA test starts here
_supported_fs generic
_require_scratch
_require_hardlinks
_require_dm_target flakey
_scratch_mkfs >>$seqres.full 2>&1
_require_metadata_journaling $SCRATCH_DEV
_init_flakey
_mount_flakey
# Create our test directory and file.
mkdir $SCRATCH_MNT/testdir
touch $SCRATCH_MNT/foo
ln $SCRATCH_MNT/foo $SCRATCH_MNT/testdir/foo2
ln $SCRATCH_MNT/foo $SCRATCH_MNT/testdir/foo3
# Make sure everything done so far is durably persisted.
sync
# Now we remove one of our file's hardlinks in the directory testdir.
unlink $SCRATCH_MNT/testdir/foo3
# We now fsync our file using the "foo" link, which has a parent that
# is not the directory "testdir".
$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/foo
_flakey_drop_and_remount
# After the journal/log is replayed we expect to not see the "foo3" link anymore
# and we should be able to remove all names in the directory "testdir" and then
# remove it (no stale directory entries left after the journal/log replay).
echo "Entries in testdir:"
ls -1 $SCRATCH_MNT/testdir
rm -f $SCRATCH_MNT/testdir/*
rmdir $SCRATCH_MNT/testdir
_unmount_flakey
status=0
exit
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