2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
7 # Test recovery of "lost" CoW blocks after a crash:
8 # - Create two reflinked files. Set extsz hint on second file.
9 # - Dirty one byte on the second file and fsync.
10 # - Crash the FS to test recovery.
13 _begin_fstest shutdown auto quick clone
15 # Import common functions.
19 # real QA test starts here
21 _require_scratch_reflink
23 _require_xfs_io_command "fiemap"
25 echo "Format and mount"
26 _scratch_mkfs > $seqres.full 2>&1
27 _scratch_mount >> $seqres.full 2>&1
29 testdir=$SCRATCH_MNT/test-$seq
34 filesize=$((blksz * nr))
36 bufsize=$((blksz * bufnr))
38 _require_fs_space $SCRATCH_MNT $((filesize / 1024 * 3 * 5 / 4))
40 echo "Create the original files"
41 $XFS_IO_PROG -f -c "pwrite -S 0x61 -b $bufsize 0 $filesize" $testdir/file1 >> $seqres.full
42 $XFS_IO_PROG -f -c "pwrite -S 0x61 -b $bufsize 0 $filesize" $testdir/file2.chk >> $seqres.full
43 $XFS_IO_PROG -f -c "extsize $bufsize" $testdir/file2
44 _cp_reflink $testdir/file1 $testdir/file2 >> $seqres.full
48 md5sum $testdir/file1 | _filter_scratch
49 md5sum $testdir/file2 | _filter_scratch
50 md5sum $testdir/file2.chk | _filter_scratch
52 echo "CoW and leave leftovers"
53 $XFS_IO_PROG -f -c "extsize" $testdir/file2 >> $seqres.full
54 $XFS_IO_PROG -f -c "pwrite -S 0x63 $((filesize - 1)) 1" -c "fsync" $testdir/file2 >> $seqres.full
55 $XFS_IO_PROG -f -c "pwrite -S 0x63 $((filesize - 1)) 1" -c "fsync" $testdir/file2.chk >> $seqres.full
58 echo "Crash and recover"
59 $XFS_IO_PROG -x -c "shutdown" $testdir/file2 >> $seqres.full
63 md5sum $testdir/file1 | _filter_scratch
64 md5sum $testdir/file2 | _filter_scratch
65 md5sum $testdir/file2.chk | _filter_scratch