mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Theodore Ts'o
56ff01f471
The check script requires that it be run as root, so adding individualized checks for this in each teat is not needed. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
191 lines
6.2 KiB
Bash
Executable File
191 lines
6.2 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. btrfs/052
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#
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# Verify that the btrfs ioctl clone operation can operate on the same
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# file as a source and target. That is, clone extents within the same
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# file.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2014 Filipe Manana. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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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 -fr $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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test_btrfs_clone_same_file()
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{
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if [ -z $1 ]; then
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MOUNT_OPTIONS=""
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else
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MOUNT_OPTIONS="-O $1"
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fi
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_scratch_mkfs >/dev/null 2>&1
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_scratch_mount $MOUNT_OPTIONS
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BLOCK_SIZE=$(get_block_size $SCRATCH_MNT)
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EXTENT_SIZE=$((2 * $BLOCK_SIZE))
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# Create a file with 5 extents, 4 extents of 2 blocks each and 1 extent
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# of 16 blocks.
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OFFSET=0
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$XFS_IO_PROG -f -c "pwrite -S 0x01 -b $EXTENT_SIZE $OFFSET $EXTENT_SIZE" $SCRATCH_MNT/foo \
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| _filter_xfs_io_blocks_modified
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sync
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OFFSET=$(($OFFSET + $EXTENT_SIZE))
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$XFS_IO_PROG -c "pwrite -S 0x02 -b $EXTENT_SIZE $OFFSET $EXTENT_SIZE" $SCRATCH_MNT/foo \
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| _filter_xfs_io_blocks_modified
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sync
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OFFSET=$(($OFFSET + $EXTENT_SIZE))
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$XFS_IO_PROG -c "pwrite -S 0x03 -b $EXTENT_SIZE $OFFSET $EXTENT_SIZE" $SCRATCH_MNT/foo \
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| _filter_xfs_io_blocks_modified
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sync
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OFFSET=$(($OFFSET + $EXTENT_SIZE))
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$XFS_IO_PROG -c "pwrite -S 0x04 -b $EXTENT_SIZE $OFFSET $EXTENT_SIZE" $SCRATCH_MNT/foo \
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| _filter_xfs_io_blocks_modified
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sync
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OFFSET=$(($OFFSET + $EXTENT_SIZE))
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EXTENT_SIZE=$((16 * $BLOCK_SIZE))
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$XFS_IO_PROG -c "pwrite -S 0x05 -b $EXTENT_SIZE $OFFSET $EXTENT_SIZE" $SCRATCH_MNT/foo \
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| _filter_xfs_io_blocks_modified
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sync
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# Initial file content.
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od -t x1 $SCRATCH_MNT/foo | _filter_od
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# Same source and target ranges - must fail.
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$CLONER_PROG -s $((2 * $BLOCK_SIZE)) -d $((2 * $BLOCK_SIZE)) \
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-l $((2 * $BLOCK_SIZE)) $SCRATCH_MNT/foo $SCRATCH_MNT/foo
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# Check file content didn't change.
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od -t x1 $SCRATCH_MNT/foo | _filter_od
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# Intersection between source and target ranges - must fail too.
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# $CLONER_PROG -s 4096 -d 8192 -l 8192 $SCRATCH_MNT/foo $SCRATCH_MNT/foo
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$CLONER_PROG -s $((1 * $BLOCK_SIZE)) -d $((2 * $BLOCK_SIZE)) \
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-l $((2 * $BLOCK_SIZE)) $SCRATCH_MNT/foo $SCRATCH_MNT/foo
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# Check file content didn't change.
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od -t x1 $SCRATCH_MNT/foo | _filter_od
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# Clone an entire extent from a higher range to a lower range.
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$CLONER_PROG -s $((6 * $BLOCK_SIZE)) -d 0 -l $((2 * $BLOCK_SIZE)) \
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$SCRATCH_MNT/foo $SCRATCH_MNT/foo
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# Check entire file, 0th and 1st blocks now have the same content
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# as the 6th and 7th blocks.
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od -t x1 $SCRATCH_MNT/foo | _filter_od
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# Clone an entire extent from a lower range to a higher range.
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$CLONER_PROG -s $((2 * $BLOCK_SIZE)) -d $((4 * $BLOCK_SIZE)) \
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-l $((2 * $BLOCK_SIZE)) $SCRATCH_MNT/foo $SCRATCH_MNT/foo
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# Check entire file, 0th and 1st blocks now have the same content
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# as the 6th and 7th block, and 4th and 5th blocks now has the same
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# content as the 2nd and 3rd blocks.
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od -t x1 $SCRATCH_MNT/foo | _filter_od
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# Now clone 1 extent and an half into the file range starting
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# at 16th block So we get the second half of the extent
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# starting at 4th block and the whole extent starting at 6th
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# block cloned into the middle of the 16 blocks extent that
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# starts at 8th block. This makes the clone ioctl process more
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# extent items from the b+tree and forces a split of the large
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# 16-block extent at the end of the file.
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$CLONER_PROG -s $((5 * $BLOCK_SIZE)) -d $((16 * $BLOCK_SIZE)) \
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-l $((3 * $BLOCK_SIZE)) $SCRATCH_MNT/foo $SCRATCH_MNT/foo
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# Check entire file. Besides the previous changes, we now
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# should have 1 block with the value 0x02 at 16th block, and 2
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# blocks with value 0x04 starting at the 17th block . The
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# block ranges [8, 16[ and [19, 24[ should remain with all
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# bytes having the value 0x05.
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od -t x1 $SCRATCH_MNT/foo | _filter_od
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# Now update 2 blocks of data at offset 0. The extent at this
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# position is a clone of the extent at 6th block. Check that
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# writing to this offset doesn't change data at 6th block.
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$XFS_IO_PROG -c "pwrite -S 0xff -b $((2 * $BLOCK_SIZE)) 0 $((2 * $BLOCK_SIZE))" \
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$SCRATCH_MNT/foo | _filter_xfs_io_blocks_modified
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od -t x1 $SCRATCH_MNT/foo | _filter_od
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# Check that after defragmenting the file and re-mounting, the file
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# content remains exactly the same as before.
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_run_btrfs_util_prog filesystem defragment $SCRATCH_MNT/foo
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_scratch_cycle_mount
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od -t x1 $SCRATCH_MNT/foo | _filter_od
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# Verify that there are no consistency errors.
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_check_scratch_fs
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}
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# For any of the tests below, regardless of cow/nodatacow/compression, the
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# results as observed by an application/user should be exactly the same.
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echo "Testing with a cow file (default)"
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test_btrfs_clone_same_file
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_scratch_unmount
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echo "Testing with a nocow file (-O nodatacow)"
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test_btrfs_clone_same_file "nodatacow"
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_scratch_unmount
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echo "Testing with a cow file and lzo compression"
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test_btrfs_clone_same_file "compress-force=lzo"
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_scratch_unmount
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echo "Testing with a cow file and zlib compression"
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test_btrfs_clone_same_file "compress-force=zlib"
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_scratch_unmount
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echo "Testing with a nocow file and lzo compression"
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test_btrfs_clone_same_file "nodatacow,compress-force=lzo"
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_scratch_unmount
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echo "Testing with a nocow file and zlib compression"
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test_btrfs_clone_same_file "nodatacow,compress-force=zlib"
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status=0
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exit
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