2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (C) 2020 SUSE Linux Products GmbH. All Rights Reserved.
7 # Test a fallocate() zero range operation against a large file range for which
8 # there are many small extents allocated. Verify the operation does not fail
9 # and the respective range return zeroes on subsequent reads.
12 seqres=$RESULT_DIR/$seq
13 echo "QA output created by $seq"
15 status=1 # failure is the default!
16 trap "_cleanup; exit \$status" 0 1 2 3 15
24 # get standard environment, filters and checks
28 # real QA test starts here
31 _require_xfs_io_command "fzero"
32 _require_xfs_io_command "fpunch"
33 _require_test_program "punch-alternating"
37 _scratch_mkfs >>$seqres.full 2>&1
40 # Create a file with many small extents. To speed up file creation, do
41 # buffered writes and then punch a hole on every other block.
42 $XFS_IO_PROG -f -c "pwrite -S 0xab -b 10M 0 100M" \
43 $SCRATCH_MNT/foobar >>$seqres.full
44 $here/src/punch-alternating $SCRATCH_MNT/foobar >>$seqres.full
46 # For btrfs, trigger a transaction commit to force metadata COW for the
47 # following fallocate zero range operation.
50 $XFS_IO_PROG -c "fzero 0 100M" $SCRATCH_MNT/foobar
52 # Check the file content after umounting and mounting again the fs, to verify
53 # everything was persisted.
56 echo "File content after zero range operation:"
57 od -A d -t x1 $SCRATCH_MNT/foobar