2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (C) 2017 SUSE Linux Products GmbH. All Rights Reserved.
7 # Test that if we have a file with a hole, do a mix of direct IO and buffered
8 # writes to it and truncate the file to a size that lies in the middle of the
9 # hole, after unmounting and mounting again the filesystem, the file has a
10 # correct size and no data loss happened.
13 seqres=$RESULT_DIR/$seq
14 echo "QA output created by $seq"
16 status=1 # failure is the default!
17 trap "_cleanup; exit \$status" 0 1 2 3 15
24 # get standard environment, filters and checks
28 # real QA test starts here
35 _scratch_mkfs >>$seqres.full 2>&1
38 # Create out test file with two extents and a hole between those extents.
39 # The extent that lies beyond the hole must be written using direct IO and later
40 # we truncate the file to a size that lies within the hole's range.
41 $XFS_IO_PROG -f -c "pwrite -S 0x01 0K 32K" $SCRATCH_MNT/foo | _filter_xfs_io
42 $XFS_IO_PROG -d -c "pwrite -S 0x02 -b 32K 64K 32K" $SCRATCH_MNT/foo \
45 # Now truncate our file to a smaller size that lies behind the offset used by
46 # the previous direct IO write and that lies in a file hole.
47 $XFS_IO_PROG -c "truncate 60K" $SCRATCH_MNT/foo
49 # Now get file digests before unmounting the filesystem and after mounting it
50 # again. The digests should match (same file data and size in both cases).
51 echo "File digest before unmounting the filesystem:"
52 md5sum $SCRATCH_MNT/foo | _filter_scratch
54 echo "File digest after mounting again the filesystem:"
55 md5sum $SCRATCH_MNT/foo | _filter_scratch