From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:65147 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751223AbaFCMq0 (ORCPT ); Tue, 3 Jun 2014 08:46:26 -0400 Date: Tue, 3 Jun 2014 14:46:21 +0200 (CEST) From: =?ISO-8859-15?Q?Luk=E1=A8_Czerner?= To: Filipe David Borba Manana cc: fstests@vger.kernel.org, linux-btrfs@vger.kernel.org Subject: Re: [PATCH v4] xfstests: add test for btrfs cloning with file holes In-Reply-To: <1401627966-21233-1-git-send-email-fdmanana@gmail.com> Message-ID: References: <1401499053-11162-1-git-send-email-fdmanana@gmail.com> <1401627966-21233-1-git-send-email-fdmanana@gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Sun, 1 Jun 2014, Filipe David Borba Manana wrote: > Date: Sun, 1 Jun 2014 14:06:06 +0100 > 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 > > 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 $feat not supported in the available version of mkfs.btrfs" And what if kernel does not support this ? > +} > + > init_rc() > { > if [ "$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. > + > + # 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" 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 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+* > +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 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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 >