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[85.246.158.17]) by mx.google.com with ESMTPSA id c7sm26421252wjf.19.2014.06.01.05.06.33 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 01 Jun 2014 05:06:34 -0700 (PDT) From: Filipe David Borba Manana To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, Filipe David Borba Manana Subject: [PATCH v4] xfstests: add test for btrfs cloning with file holes Date: Sun, 1 Jun 2014 14:06:06 +0100 Message-Id: <1401627966-21233-1-git-send-email-fdmanana@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1401499053-11162-1-git-send-email-fdmanana@gmail.com> References: <1401499053-11162-1-git-send-email-fdmanana@gmail.com> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 --- 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 $feat not supported in the available version of mkfs.btrfs" +} + init_rc() { if [ "$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 + + # 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 + + # 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 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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 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--- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -57,3 +57,4 @@ 052 auto quick 053 auto quick 054 auto quick +055 auto quick