On Tue, Jun 3, 2014 at 1:46 PM, Lukáš Czerner <lczerner@xxxxxxxxxx> wrote:
> On Sun, 1 Jun 2014, Filipe David Borba Manana wrote:
>
>> Date: Sun, 1 Jun 2014 14:06:06 +0100
>> From: Filipe David Borba Manana <fdmanana@xxxxxxxxx>
>> To: fstests@xxxxxxxxxxxxxxx
>> Cc: linux-btrfs@xxxxxxxxxxxxxxx,
>> Filipe David Borba Manana <fdmanana@xxxxxxxxx>
>> Subject: [PATCH v4] xfstests: add test for btrfs cloning with file holes
>>
>> Regression test for the btrfs ioctl clone operation when the source range
>> contains hole(s) and the FS has the NO_HOLES feature enabled (file holes
>> don't need file extent items in the btree to represent them).
>>
>> This issue is fixed by the following linux kernel btrfs patch:
>>
>> Btrfs: fix clone to deal with holes when NO_HOLES feature is enabled
>>
>> Signed-off-by: Filipe David Borba Manana <fdmanana@xxxxxxxxx>
>> ---
>>
>> V2: Increased test coverage by testing the cases where a hole overlaps
>> the start and end of the cloning range.
>>
>> V3: Test the case where the cloning range includes an hole at the end
>> of the source file and might increase the size of the target file.
>>
>> V4: Added test for the case where the clone range covers only a hole at
>> the beginning of the source file.
>> Made the test be skipped if the available version of mkfs.btrfs
>> doesn't support the no-holes feature. And when testing the case
>> where the no-holes feature isn't enabled, explicitly ask mkfs.btrfs
>> to disable no-holes (future versions of mkfs.btrfs might enable
>> this feature by default).
>>
>> common/rc | 13 ++
>> tests/btrfs/055 | 165 ++++++++++++++++++++++++++
>> tests/btrfs/055.out | 333 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>> tests/btrfs/group | 1 +
>> 4 files changed, 512 insertions(+)
>> create mode 100755 tests/btrfs/055
>> create mode 100644 tests/btrfs/055.out
>>
>> diff --git a/common/rc b/common/rc
>> index f27ee53..0ef0ece 100644
>> --- a/common/rc
>> +++ b/common/rc
>> @@ -2177,6 +2177,19 @@ _require_btrfs_send_stream_version()
>> fi
>> }
>>
>> +_require_btrfs_fs_feature()
>> +{
>> + if [ -z $1 ]; then
>> + echo "Missing feature name argument for _require_btrfs_fs_feature"
>> + exit 1
>> + fi
>> + feat=$1
>> + $MKFS_BTRFS_PROG -O list-all 2>&1 | \
>> + grep '^[ \t]*'"$feat"'\b' > /dev/null 2>&1
>> + [ $? -eq 0 ] || \
>> + _notrun "Feature $feat not supported in the available version of mkfs.btrfs"
>
> And what if kernel does not support this ?
Right. Due to the version number relationship between btrfs-progs and
kernel, it's unlikely to have an older kernel with a more recent
version of btrfs-progs (e.g. 3.10 kernel and 3.14 btrfs-progs).
Either way, I added it to v5 (following shortly).
>
>> +}
>> +
>> init_rc()
>> {
>> if [ "$iam" == new ]
>> diff --git a/tests/btrfs/055 b/tests/btrfs/055
>> new file mode 100755
>> index 0000000..0e67c88
>> --- /dev/null
>> +++ b/tests/btrfs/055
>> @@ -0,0 +1,165 @@
>> +#! /bin/bash
>> +# FS QA Test No. btrfs/055
>> +#
>> +# Regression test for the btrfs ioctl clone operation when the source range
>> +# contains hole(s) and the FS has the NO_HOLES feature enabled (file holes
>> +# don't need file extent items in the btree to represent them).
>> +#
>> +# This issue is fixed by the following linux kernel btrfs patch:
>> +#
>> +# Btrfs: fix clone to deal with holes when NO_HOLES feature is enabled
>> +#
>> +#-----------------------------------------------------------------------
>> +# Copyright (c) 2014 Filipe Manana. All Rights Reserved.
>> +#
>> +# This program is free software; you can redistribute it and/or
>> +# modify it under the terms of the GNU General Public License as
>> +# published by the Free Software Foundation.
>> +#
>> +# This program is distributed in the hope that it would be useful,
>> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
>> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> +# GNU General Public License for more details.
>> +#
>> +# You should have received a copy of the GNU General Public License
>> +# along with this program; if not, write the Free Software Foundation,
>> +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
>> +#-----------------------------------------------------------------------
>> +#
>> +
>> +seq=`basename $0`
>> +seqres=$RESULT_DIR/$seq
>> +echo "QA output created by $seq"
>> +
>> +tmp=/tmp/$$
>> +status=1 # failure is the default!
>> +trap "_cleanup; exit \$status" 0 1 2 3 15
>> +
>> +_cleanup()
>> +{
>> + rm -fr $tmp
>> +}
>> +
>> +# get standard environment, filters and checks
>> +. ./common/rc
>> +. ./common/filter
>> +
>> +# real QA test starts here
>> +_supported_fs btrfs
>> +_supported_os Linux
>> +_require_scratch
>> +_require_btrfs_cloner
>> +_require_btrfs_fs_feature "no-holes"
>> +_need_to_be_root
>> +
>> +rm -f $seqres.full
>> +
>> +test_btrfs_clone_with_holes()
>> +{
>> + _scratch_mkfs "$1" >/dev/null 2>&1
>> + _scratch_mount
>> +
>> + # Create a file with 4 extents and 1 hole, all with a size of 8Kb each.
>> + $XFS_IO_PROG -f -c "pwrite -S 0x01 -b 8192 0 8192" $SCRATCH_MNT/foo \
>> + | _filter_xfs_io
>> + sync
>> + $XFS_IO_PROG -c "pwrite -S 0x02 -b 8192 8192 8192" $SCRATCH_MNT/foo \
>> + | _filter_xfs_io
>> + sync
>> + # After the following write we get a hole in the range [16384, 24576[
>> + $XFS_IO_PROG -c "pwrite -S 0x04 -b 8192 24576 8192" $SCRATCH_MNT/foo \
>> + | _filter_xfs_io
>> + sync
>> + $XFS_IO_PROG -c "pwrite -S 0x05 -b 8192 32768 8192" $SCRATCH_MNT/foo \
>> + | _filter_xfs_io
>> + sync
>> +
>> + # Clone destination file, 1 extent of 96kb.
>> + $XFS_IO_PROG -f -c "pwrite -S 0xff -b 98304 0 98304" $SCRATCH_MNT/bar \
>> + | _filter_xfs_io
>> + sync
>
> Again you could merge all pwrite calls into one XFS_IO_PROG command
> and use -W to sync.
Yes, I am aware of that possibility.
I find it easier to follow/read as it is (this is highly relative, and
don't expect everyone to agree with this style).
>
>> +
>> + # Clone 2nd extent, 8Kb hole and 3rd extent of foo into bar.
>> + $CLONER_PROG -s 8192 -d 0 -l 24576 $SCRATCH_MNT/foo $SCRATCH_MNT/bar
>> +
>> + # Verify both extents and the hole were cloned.
>> + od -t x1 $SCRATCH_MNT/bar
>
> At this point there are many "od" outputs, so it would be convenient
> to at least echo some information so if there is a problem in the
> output we can easily identify what caused it.
>
> For example
>
> echo "2. Cloning range starts at the middle of a hole"
Agreed, good idea.
Included in v5 (following shortly).
Thanks Lukas
>
> Thanks!
> -Lukas
>
>> +
>> + # Cloning range starts at the middle of a hole.
>> + $CLONER_PROG -s 20480 -d 32768 -l 12288 $SCRATCH_MNT/foo \
>> + $SCRATCH_MNT/bar
>> +
>> + # Verify that half of the hole and the following 8Kb extent were cloned.
>> + od -t x1 $SCRATCH_MNT/bar
>> +
>> + # Cloning range ends at the middle of a hole.
>> + $CLONER_PROG -s 0 -d 65536 -l 20480 $SCRATCH_MNT/foo $SCRATCH_MNT/bar
>> +
>> + # Verify that 2 extents of 8kb and a 4kb hole were cloned.
>> + od -t x1 $SCRATCH_MNT/bar
>> +
>> + # Create a 24Kb hole at the end of the source file (foo).
>> + $XFS_IO_PROG -c "truncate 65536" $SCRATCH_MNT/foo
>> + sync
>> +
>> + # Now clone a range that overlaps that hole at the end of the foo file.
>> + # It should clone the last 4Kb of the extent at offset 32768 and the
>> + # first 8kb of the 24kb hole at the end of foo.
>> + $CLONER_PROG -s 36864 -d 86016 -l 12288 $SCRATCH_MNT/foo \
>> + $SCRATCH_MNT/bar
>> +
>> + # Verify that the second half of the 8Kb extent at offset 32768 of foo
>> + # and the first 8Kb of the 24kb hole of foo were cloned into bar.
>> + od -t x1 $SCRATCH_MNT/bar
>> +
>> + # Clone the same range as before, but clone it into a different offset
>> + # of the target (bar) such that it increases the size of the target
>> + # by 8Kb.
>> + $CLONER_PROG -s 36864 -d 94208 -l 12288 $SCRATCH_MNT/foo \
>> + $SCRATCH_MNT/bar
>> +
>> + # Verify that the second half of the 8Kb extent at offset 32768 of foo
>> + # and the first 8Kb of the 24kb hole of foo were cloned into bar at
>> + # bar's offset 94208 and that bar's size increased by 8Kb.
>> + od -t x1 $SCRATCH_MNT/bar
>> +
>> + # Create a new completely sparse file (no extents, it's a big hole).
>> + $XFS_IO_PROG -f -c "truncate 100000" $SCRATCH_MNT/qwerty
>> + sync
>> +
>> + # Test cloning a range from the sparse file to the bar file without
>> + # increasing bar's size.
>> + $CLONER_PROG -s 4096 -d 0 -l 8192 $SCRATCH_MNT/qwerty $SCRATCH_MNT/bar
>> +
>> + # First 8Kb of bar should now be zeroes.
>> + od -t x1 $SCRATCH_MNT/bar
>> +
>> + # Test cloning a range from the sparse file to the end of the bar file.
>> + # The bar file currently has a size of 106496 bytes.
>> + $CLONER_PROG -s 0 -d 106496 -l 32768 $SCRATCH_MNT/qwerty \
>> + $SCRATCH_MNT/bar
>> +
>> + # Verify bar's size increased to 106496 + 32768 bytes (136Kb), and its
>> + # last 32768 bytes are all zeroes.
>> + od -t x1 $SCRATCH_MNT/bar
>> +
>> + # Verify that there are no consistency errors.
>> + _check_scratch_fs
>> +}
>> +
>> +# Regardless of the NO_HOLES feature being enabled or not, the test results
>> +# should be exactly the same for both cases.
>> +
>> +echo "Testing without the NO_HOLES feature"
>> +# As of btrfs-progs 3.14.x, the no-holes feature isn't enabled by default.
>> +# But explicitly disable it at mkfs time as it might be enabled by default
>> +# in future versions.
>> +test_btrfs_clone_with_holes "-O ^no-holes"
>> +
>> +_scratch_unmount
>> +
>> +echo "Testing with the NO_HOLES feature enabled"
>> +test_btrfs_clone_with_holes "-O no-holes"
>> +
>> +status=0
>> +exit
>> diff --git a/tests/btrfs/055.out b/tests/btrfs/055.out
>> new file mode 100644
>> index 0000000..714ede8
>> --- /dev/null
>> +++ b/tests/btrfs/055.out
>> @@ -0,0 +1,333 @@
>> +QA output created by 055
>> +Testing without the NO_HOLES feature
>> +wrote 8192/8192 bytes at offset 0
>> +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> +wrote 8192/8192 bytes at offset 8192
>> +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> +wrote 8192/8192 bytes at offset 24576
>> +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> +wrote 8192/8192 bytes at offset 32768
>> +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> +wrote 98304/98304 bytes at offset 0
>> +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> +0000000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0020000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0300000
>> +0000000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0020000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0300000
>> +0000000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0020000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0200000 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
>> +*
>> +0220000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0240000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0250000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0300000
>> +0000000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0020000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0200000 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
>> +*
>> +0220000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0240000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0250000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0260000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0300000
>> +0000000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0020000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0200000 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
>> +*
>> +0220000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0240000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0250000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0260000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0270000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0300000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0320000
>> +0000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0200000 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
>> +*
>> +0220000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0240000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0250000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0260000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0270000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0300000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0320000
>> +0000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0200000 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
>> +*
>> +0220000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0240000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0250000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0260000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0270000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0300000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0420000
>> +Testing with the NO_HOLES feature enabled
>> +wrote 8192/8192 bytes at offset 0
>> +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> +wrote 8192/8192 bytes at offset 8192
>> +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> +wrote 8192/8192 bytes at offset 24576
>> +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> +wrote 8192/8192 bytes at offset 32768
>> +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> +wrote 98304/98304 bytes at offset 0
>> +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> +0000000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0020000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0300000
>> +0000000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0020000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0300000
>> +0000000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0020000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0200000 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
>> +*
>> +0220000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0240000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0250000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0300000
>> +0000000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0020000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0200000 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
>> +*
>> +0220000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0240000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0250000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0260000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0300000
>> +0000000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0020000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0200000 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
>> +*
>> +0220000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0240000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0250000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0260000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0270000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0300000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0320000
>> +0000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0200000 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
>> +*
>> +0220000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0240000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0250000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0260000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0270000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0300000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0320000
>> +0000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0040000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0060000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0110000 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04 04
>> +*
>> +0130000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>> +*
>> +0200000 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
>> +*
>> +0220000 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02 02
>> +*
>> +0240000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0250000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0260000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0270000 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05 05
>> +*
>> +0300000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> +*
>> +0420000
>> diff --git a/tests/btrfs/group b/tests/btrfs/group
>> index b668485..2c10c5b 100644
>> --- a/tests/btrfs/group
>> +++ b/tests/btrfs/group
>> @@ -57,3 +57,4 @@
>> 052 auto quick
>> 053 auto quick
>> 054 auto quick
>> +055 auto quick
>>
--
Filipe David Manana,
"Reasonable men adapt themselves to the world.
Unreasonable men adapt the world to themselves.
That's why all progress depends on unreasonable men."
--
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