mirror of
https://github.com/linux-apfs/apfstests.git
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Filipe Manana
55cc523b0e
The test currently uses offsets and lengths which are multiples of
4K, but not multiples of 64K (or any other page size between 4Kb and
64Kb). This makes the reflink calls fail with -EINVAL because
reflink only operates on ranges that are aligned to the the
filesystem's block size.
Fix this by ensuring all ranges passed to the reflink calls are
aligned to 64K, so that the test works on any system regardless of
its page size. The test still fails without the corresponding
kernel fix applied [1] as it is supposed to.
[1] 3c850b45110950 ("Btrfs: incremental send, fix emission of invalid clone operations")
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
108 lines
3.7 KiB
Bash
Executable File
108 lines
3.7 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2019 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test No. 189
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#
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# Test that an incremental send receive does not issue clone operations that
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# attempt to clone the last block of a file, with a size not aligned to the
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# filesystem's sector size, into the middle of some other file. Such clone
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# request causes the receiver to fail (with EINVAL), for kernels that include
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# commit ac765f83f1397646 ("Btrfs: fix data corruption due to cloning of eof
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# block"), or cause silent data corruption for older kernels.
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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rm -fr $send_files_dir
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/reflink
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# real QA test starts here
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_supported_fs btrfs
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_supported_os Linux
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_require_fssum
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_require_test
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_require_scratch_reflink
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send_files_dir=$TEST_DIR/btrfs-test-$seq
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rm -f $seqres.full
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rm -fr $send_files_dir
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mkdir $send_files_dir
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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$XFS_IO_PROG -f -c "pwrite -S 0xb1 0 2M" $SCRATCH_MNT/foo | _filter_xfs_io
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$XFS_IO_PROG -f -c "pwrite -S 0xc7 0 2M" $SCRATCH_MNT/bar | _filter_xfs_io
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$XFS_IO_PROG -f -c "pwrite -S 0x4d 0 2M" $SCRATCH_MNT/baz | _filter_xfs_io
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$XFS_IO_PROG -f -c "pwrite -S 0xe2 0 2M" $SCRATCH_MNT/zoo | _filter_xfs_io
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$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/base 2>&1 \
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| _filter_scratch
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$BTRFS_UTIL_PROG send -f $send_files_dir/1.snap $SCRATCH_MNT/base 2>&1 \
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| _filter_scratch
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# Clone part of the extent from a higher offset to a lower offset of the same
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# file.
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$XFS_IO_PROG -c "reflink $SCRATCH_MNT/bar 1600K 640K 128K" $SCRATCH_MNT/bar \
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| _filter_xfs_io
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# Now clone from the previous file, same range, into the middle of another file,
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# such that the end offset at the destination is smaller than the destination's
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# file size.
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$XFS_IO_PROG -c "reflink $SCRATCH_MNT/bar 1600K 0 128K" $SCRATCH_MNT/zoo \
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| _filter_xfs_io
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# Truncate the source file of the previous clone operation to a smaller size,
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# which ends up in the middle of the range of previous clone operation from file
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# bar to file bar. We want to check this doesn't confuse send to issue invalid
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# clone operations. This smaller size must not be aligned to the sector size of
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# the filesystem - the unaligned size is what can cause those invalid clone
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# operations.
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$XFS_IO_PROG -c "truncate 710K" $SCRATCH_MNT/bar
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$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/incr 2>&1 \
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| _filter_scratch
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$BTRFS_UTIL_PROG send -p $SCRATCH_MNT/base -f $send_files_dir/2.snap \
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$SCRATCH_MNT/incr 2>&1 | _filter_scratch
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# Compute digests of the snapshot trees so that later we can compare against
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# digests of the trees in the new filesystem, to see if they match (no data or
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# metadata corruption happened).
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$FSSUM_PROG -A -f -w $send_files_dir/base.fssum $SCRATCH_MNT/base
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$FSSUM_PROG -A -f -w $send_files_dir/incr.fssum \
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-x $SCRATCH_MNT/incr/base $SCRATCH_MNT/incr
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# Now recreate the filesystem by receiving both send streams and verify we get
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# the same file contents that the original filesystem had.
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_scratch_unmount
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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$BTRFS_UTIL_PROG receive -f $send_files_dir/1.snap $SCRATCH_MNT
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$BTRFS_UTIL_PROG receive -f $send_files_dir/2.snap $SCRATCH_MNT
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# Compute digests of the snapshot trees in the new filesystem and compare them
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# to the ones in the original filesystem, they must match.
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$FSSUM_PROG -r $send_files_dir/base.fssum $SCRATCH_MNT/base
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$FSSUM_PROG -r $send_files_dir/incr.fssum $SCRATCH_MNT/incr
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status=0
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exit
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