| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved. |
| # |
| # FS QA Test No. 527 |
| # |
| # Test that after a combination of file renames, deletions, linking and creating |
| # new files with names that were previously deleted, if we fsync the new file, |
| # after a power failure we are able to mount the filesystem and all file names |
| # correspond to the correct inodes. |
| # |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| _cleanup_flakey |
| cd / |
| rm -f $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/dmflakey |
| |
| # real QA test starts here |
| _supported_fs generic |
| _supported_os Linux |
| _require_scratch |
| _require_dm_target flakey |
| |
| rm -f $seqres.full |
| |
| _scratch_mkfs >>$seqres.full 2>&1 |
| _require_metadata_journaling $SCRATCH_DEV |
| _init_flakey |
| _mount_flakey |
| |
| mkdir $SCRATCH_MNT/testdir |
| echo -n "foo" > $SCRATCH_MNT/testdir/fname1 |
| echo -n "hello" > $SCRATCH_MNT/testdir/fname2 |
| |
| # For a different variant of the same test but when files have hardlinks too. |
| mkdir $SCRATCH_MNT/testdir2 |
| echo -n "foo" > $SCRATCH_MNT/testdir2/zz |
| ln $SCRATCH_MNT/testdir2/zz $SCRATCH_MNT/testdir2/zz_link |
| echo -n "hello" > $SCRATCH_MNT/testdir2/a |
| |
| # Make sure everything done so far is durably persisted. |
| sync |
| |
| # Rename, remove and link files such that one new name corresponds to the name |
| # of a deleted file and one new file has the old name of the renamed file. Then |
| # fsync only the new file. |
| mv $SCRATCH_MNT/testdir/fname1 $SCRATCH_MNT/testdir/fname3 |
| rm -f $SCRATCH_MNT/testdir/fname2 |
| ln $SCRATCH_MNT/testdir/fname3 $SCRATCH_MNT/testdir/fname2 |
| echo -n "bar" > $SCRATCH_MNT/testdir/fname1 |
| $XFS_IO_PROG -c "fsync" $SCRATCH_MNT/testdir/fname1 |
| |
| # A second variant, more complex, that involves files with hardlinks too. |
| |
| # The following 3 renames are equivalent to a rename exchange (zz_link to a), but |
| # without the atomicity which isn't required here. |
| mv $SCRATCH_MNT/testdir2/a $SCRATCH_MNT/testdir2/tmp |
| mv $SCRATCH_MNT/testdir2/zz_link $SCRATCH_MNT/testdir2/a |
| mv $SCRATCH_MNT/testdir2/tmp $SCRATCH_MNT/testdir2/zz_link |
| |
| # The following rename and file creation are equivalent to a rename whiteout. |
| mv $SCRATCH_MNT/testdir2/zz $SCRATCH_MNT/testdir2/a2 |
| echo -n "bar" > $SCRATCH_MNT/testdir2/zz |
| |
| # Fsync of zz should work and produce correct results after a power failure. |
| $XFS_IO_PROG -c "fsync" $SCRATCH_MNT/testdir2/zz |
| |
| # Simulate a power failure and mount the filesystem to check that all file names |
| # exist and correspond to the correct inodes. |
| _flakey_drop_and_remount |
| |
| echo "File fname1 data after power failure: $(cat $SCRATCH_MNT/testdir/fname1)" |
| echo "File fname2 data after power failure: $(cat $SCRATCH_MNT/testdir/fname2)" |
| echo "File fname3 data after power failure: $(cat $SCRATCH_MNT/testdir/fname3)" |
| |
| echo "File a data after power failure: $(cat $SCRATCH_MNT/testdir2/a)" |
| echo "File a2 data after power failure: $(cat $SCRATCH_MNT/testdir2/a2)" |
| echo "File zz data after power failure: $(cat $SCRATCH_MNT/testdir2/zz)" |
| echo "File zz_link data after power failure: $(cat $SCRATCH_MNT/testdir2/zz_link)" |
| |
| _unmount_flakey |
| |
| status=0 |
| exit |