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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. 106
#
# Test that if we remove one hard link from an inode, evict the inode, fsync the
# inode, power fail and then mount the filesystem, the hard link we removed does
# not exists anymore and 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 file with 2 hard links.
mkdir $SCRATCH_MNT/testdir
touch $SCRATCH_MNT/testdir/foo
ln $SCRATCH_MNT/testdir/foo $SCRATCH_MNT/testdir/bar
# Make sure everything done so far is durably persisted.
sync
# Now remove one of the links, trigger inode eviction and then fsync our
# inode.
unlink $SCRATCH_MNT/testdir/bar
echo 2 > /proc/sys/vm/drop_caches
$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/testdir/foo
_flakey_drop_and_remount
# Now verify our directory entries.
echo "Entries in testdir:"
ls -1 $SCRATCH_MNT/testdir
# If we remove our inode, its parent should become empty and therefore we should
# be able to remove the parent.
rm -f $SCRATCH_MNT/testdir/*
rmdir $SCRATCH_MNT/testdir
_unmount_flakey
# The fstests framework will call fsck against our filesystem which will verify
# that all metadata is in a consistent state.
status=0
exit
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