2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved.
7 # Test that after a combination of file renames, deletions, linking and creating
8 # new files with names that were previously deleted, if we fsync the new file,
9 # after a power failure we are able to mount the filesystem and all file names
10 # correspond to the correct inodes.
13 seqres=$RESULT_DIR/$seq
14 echo "QA output created by $seq"
16 status=1 # failure is the default!
17 trap "_cleanup; exit \$status" 0 1 2 3 15
26 # get standard environment, filters and checks
31 # real QA test starts here
35 _require_dm_target flakey
39 _scratch_mkfs >>$seqres.full 2>&1
40 _require_metadata_journaling $SCRATCH_DEV
44 mkdir $SCRATCH_MNT/testdir
45 echo -n "foo" > $SCRATCH_MNT/testdir/fname1
46 echo -n "hello" > $SCRATCH_MNT/testdir/fname2
48 # For a different variant of the same test but when files have hardlinks too.
49 mkdir $SCRATCH_MNT/testdir2
50 echo -n "foo" > $SCRATCH_MNT/testdir2/zz
51 ln $SCRATCH_MNT/testdir2/zz $SCRATCH_MNT/testdir2/zz_link
52 echo -n "hello" > $SCRATCH_MNT/testdir2/a
54 # Make sure everything done so far is durably persisted.
57 # Rename, remove and link files such that one new name corresponds to the name
58 # of a deleted file and one new file has the old name of the renamed file. Then
59 # fsync only the new file.
60 mv $SCRATCH_MNT/testdir/fname1 $SCRATCH_MNT/testdir/fname3
61 rm -f $SCRATCH_MNT/testdir/fname2
62 ln $SCRATCH_MNT/testdir/fname3 $SCRATCH_MNT/testdir/fname2
63 echo -n "bar" > $SCRATCH_MNT/testdir/fname1
64 $XFS_IO_PROG -c "fsync" $SCRATCH_MNT/testdir/fname1
66 # A second variant, more complex, that involves files with hardlinks too.
68 # The following 3 renames are equivalent to a rename exchange (zz_link to a), but
69 # without the atomicity which isn't required here.
70 mv $SCRATCH_MNT/testdir2/a $SCRATCH_MNT/testdir2/tmp
71 mv $SCRATCH_MNT/testdir2/zz_link $SCRATCH_MNT/testdir2/a
72 mv $SCRATCH_MNT/testdir2/tmp $SCRATCH_MNT/testdir2/zz_link
74 # The following rename and file creation are equivalent to a rename whiteout.
75 mv $SCRATCH_MNT/testdir2/zz $SCRATCH_MNT/testdir2/a2
76 echo -n "bar" > $SCRATCH_MNT/testdir2/zz
78 # Fsync of zz should work and produce correct results after a power failure.
79 $XFS_IO_PROG -c "fsync" $SCRATCH_MNT/testdir2/zz
81 # Simulate a power failure and mount the filesystem to check that all file names
82 # exist and correspond to the correct inodes.
83 _flakey_drop_and_remount
85 echo "File fname1 data after power failure: $(cat $SCRATCH_MNT/testdir/fname1)"
86 echo "File fname2 data after power failure: $(cat $SCRATCH_MNT/testdir/fname2)"
87 echo "File fname3 data after power failure: $(cat $SCRATCH_MNT/testdir/fname3)"
89 echo "File a data after power failure: $(cat $SCRATCH_MNT/testdir2/a)"
90 echo "File a2 data after power failure: $(cat $SCRATCH_MNT/testdir2/a2)"
91 echo "File zz data after power failure: $(cat $SCRATCH_MNT/testdir2/zz)"
92 echo "File zz_link data after power failure: $(cat $SCRATCH_MNT/testdir2/zz_link)"