mirror of
https://github.com/linux-apfs/apfstests.git
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Dave Chinner
1ff4192932
Fully scripted conversion, see script in initial SPDX license commit message. Signed-off-by: Dave Chinner <dchinner@redhat.com>
104 lines
3.3 KiB
Bash
Executable File
104 lines
3.3 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2015 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test No. btrfs/093
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#
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# Test btrfs file range cloning with the same file as a source and destination.
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#
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# This tests a specific scenario where the extent layout of the file confused
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# the clone ioctl implementation making it return -EEXIST to userspace.
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# This issue was fixed by the following linux kernel patch:
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#
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# Btrfs: fix range cloning when same inode used as source and destination
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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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rm -f $tmp.*
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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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# real QA test starts here
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch
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_require_cloner
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rm -f $seqres.full
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# Create a file with an extent layout that confused the btrfs clone ioctl
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# implementation. The first extent item that is cloned by the second call
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# to the cloner program will have only a trailing part of it referenced by
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# a new extent item, since the source offset starts in the middle of that
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# extent. This confused the clone ioctl because after inserting this new
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# extent item it would immediately after process it again thinking it
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# corresponded to an extent that existed before - this made it attempt to
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# insert a duplicated extent item pointing to the same extent again, which
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# made it return an -EEXIST error to userspace and turn the filesystem to
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# readonly mode (since the current transaction got aborted).
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test_clone()
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{
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local bs=$1
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$XFS_IO_PROG -f -c "pwrite -S 0xaa $((2 * $bs)) $((2 * $bs))" \
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$SCRATCH_MNT/foo | _filter_xfs_io
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$CLONER_PROG -s $((3 * $bs)) -d $((267 * $bs)) -l 0 $SCRATCH_MNT/foo \
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$SCRATCH_MNT/foo
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$CLONER_PROG -s $((217 * $bs)) -d $((95 * $bs)) -l 0 $SCRATCH_MNT/foo \
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$SCRATCH_MNT/foo
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echo "File digest after clone operations using same file as source and destination"
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md5sum $SCRATCH_MNT/foo | _filter_scratch
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# Test cloning using different source and destination files for the
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# same exact data - it must produce the exact same result as the case
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# before.
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$XFS_IO_PROG -f -c "pwrite -S 0xaa $((2 * $bs)) $((2 * $bs))" \
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$SCRATCH_MNT/a | _filter_xfs_io
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cp $SCRATCH_MNT/a $SCRATCH_MNT/b
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$CLONER_PROG -s $((3 * $bs)) -d $((267 * $bs)) -l 0 $SCRATCH_MNT/a \
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$SCRATCH_MNT/b
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cp $SCRATCH_MNT/b $SCRATCH_MNT/foo2
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$CLONER_PROG -s $((217 * $bs)) -d $((95 * $bs)) -l 0 $SCRATCH_MNT/b \
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$SCRATCH_MNT/foo2
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echo "File digest after clone operations using different files as source and destination"
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md5sum $SCRATCH_MNT/foo2 | _filter_scratch
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}
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# Make sure the test passes offsets and lengths to the btrfs clone ioctl that
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# are multiples of the fs block size. Currently the block size on btrfs must
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# be a multiple of the page size, so use a 64Kb fs block size in order to be
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# able to test on every platform supported by linux.
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bs=$((64 * 1024))
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echo "Testing without the no-holes feature"
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_scratch_mkfs "-O ^no-holes -n $bs" >>$seqres.full 2>&1
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_scratch_mount
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test_clone $bs
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_check_scratch_fs
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echo -e "\nTesting with the no-holes feature"
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_scratch_unmount
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_scratch_mkfs "-O no-holes -n $bs" >>$seqres.full 2>&1
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_scratch_mount
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test_clone $bs
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status=0
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exit
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