2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2014 Filipe Manana. All Rights Reserved.
5 # FS QA Test No. btrfs/034
7 # Test for a btrfs incremental send data corruption issue due to
8 # bad detection of file holes.
11 seqres=$RESULT_DIR/$seq
12 echo "QA output created by $seq"
16 status=1 # failure is the default!
17 trap "_cleanup; exit \$status" 0 1 2 3 15
24 # get standard environment, filters and checks
28 # real QA test starts here
34 _scratch_mkfs >/dev/null 2>&1
37 # Create a file such that its file extent items span at least 3 btree leafs.
38 # This is necessary to trigger a btrfs incremental send bug where file hole
39 # detection was not correct, leading to data corruption by overriding latest
40 # data regions of a file with zeroes.
42 $XFS_IO_PROG -f -c "truncate 104857600" $SCRATCH_MNT/foo
44 for ((i = 0; i < 940; i++))
46 OFFSET=$((32768 + i * 8192))
47 LEN=$((OFFSET + 8192))
48 $XFS_IO_PROG -c "falloc -k $OFFSET $LEN" $SCRATCH_MNT/foo
49 $XFS_IO_PROG -c "pwrite -S 0xf0 $OFFSET 4096" \
50 $SCRATCH_MNT/foo | _filter_xfs_io
53 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
55 $XFS_IO_PROG -c "truncate 3882008" $SCRATCH_MNT/foo
57 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
59 _run_btrfs_util_prog send -f $tmp/1.snap $SCRATCH_MNT/mysnap1
60 _run_btrfs_util_prog send -f $tmp/2.snap -p $SCRATCH_MNT/mysnap1 \
63 md5sum $SCRATCH_MNT/foo | _filter_scratch
64 md5sum $SCRATCH_MNT/mysnap1/foo | _filter_scratch
65 md5sum $SCRATCH_MNT/mysnap2/foo | _filter_scratch
68 _check_btrfs_filesystem $SCRATCH_DEV
69 _scratch_mkfs >/dev/null 2>&1
72 _run_btrfs_util_prog receive -f $tmp/1.snap $SCRATCH_MNT
73 md5sum $SCRATCH_MNT/mysnap1/foo | _filter_scratch
75 _run_btrfs_util_prog receive -f $tmp/2.snap $SCRATCH_MNT
76 md5sum $SCRATCH_MNT/mysnap2/foo | _filter_scratch
79 _check_btrfs_filesystem $SCRATCH_DEV