From c8abfdd9303bed8db9a26646b8c47d1072c0d51a Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Tue, 14 Feb 2017 20:35:53 +0000 Subject: [PATCH] btrfs: send/receive with sparse files Test that both a full and incremental btrfs send operation preserves file holes. This used to fail when the filesystem had the NO_HOLES feature enabled, that is, when the test is run with MKFS_OPTIONS="-O no-holes". This is fixed by the following patch for the linux kernel: "Btrfs: incremental send, fix unnecessary hole writes for sparse files" Signed-off-by: Filipe Manana Reviewed-by: Eryu Guan Signed-off-by: Eryu Guan --- tests/btrfs/137 | 141 ++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/137.out | 63 ++++++++++++++++++++ tests/btrfs/group | 1 + 3 files changed, 205 insertions(+) create mode 100755 tests/btrfs/137 create mode 100644 tests/btrfs/137.out diff --git a/tests/btrfs/137 b/tests/btrfs/137 new file mode 100755 index 00000000..3ff2c6b4 --- /dev/null +++ b/tests/btrfs/137 @@ -0,0 +1,141 @@ +#! /bin/bash +# FS QA Test No. btrfs/137 +# +# Test that both incremental and full send operations preserve file holes. +# +#----------------------------------------------------------------------- +# +# Copyright (C) 2017 SUSE Linux Products GmbH. All Rights Reserved. +# Author: Filipe Manana +# +# 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() +{ + cd / + rm -fr $send_files_dir + rm -f $tmp.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/punch + +# real QA test starts here +_supported_fs btrfs +_supported_os Linux +_require_test +_require_scratch +_require_xfs_io_command "fiemap" + +send_files_dir=$TEST_DIR/btrfs-test-$seq + +rm -f $seqres.full +rm -fr $send_files_dir +mkdir $send_files_dir + +_scratch_mkfs >>$seqres.full 2>&1 +_scratch_mount + +# Create the first test file. +$XFS_IO_PROG -f -c "pwrite -S 0xaa 0 4K" $SCRATCH_MNT/foo | _filter_xfs_io + +# Create a second test file with a 1Mb hole. +$XFS_IO_PROG -f \ + -c "pwrite -S 0xaa 0 4K" \ + -c "pwrite -S 0xbb 1028K 4K" \ + $SCRATCH_MNT/bar | _filter_xfs_io + +$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \ + $SCRATCH_MNT/snap1 >/dev/null + +# Now add one new extent to our first test file, increasing its size and leaving +# a 1Mb hole between the first extent and this new extent. +$XFS_IO_PROG -c "pwrite -S 0xbb 1028K 4K" $SCRATCH_MNT/foo | _filter_xfs_io + +# Now overwrite the last extent of our second test file. +$XFS_IO_PROG -c "pwrite -S 0xcc 1028K 4K" $SCRATCH_MNT/bar | _filter_xfs_io + +$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \ + $SCRATCH_MNT/snap2 >/dev/null + +echo +echo "File digests in the original filesystem:" +md5sum $SCRATCH_MNT/snap1/foo | _filter_scratch +md5sum $SCRATCH_MNT/snap1/bar | _filter_scratch +md5sum $SCRATCH_MNT/snap2/foo | _filter_scratch +md5sum $SCRATCH_MNT/snap2/bar | _filter_scratch + +echo +echo "File snap1/foo fiemap results in the original filesystem:" +$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap1/foo | _filter_fiemap +echo +echo "File snap1/bar fiemap results in the original filesystem:" +$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap1/bar | _filter_fiemap +echo +echo "File snap2/foo fiemap results in the original filesystem:" +$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap2/foo | _filter_fiemap +echo +echo "File snap2/bar fiemap results in the original filesystem:" +$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap2/bar | _filter_fiemap +echo + +# Create the send streams to apply later on a new filesystem. +$BTRFS_UTIL_PROG send $SCRATCH_MNT/snap1 -f $send_files_dir/1.snap 2>&1 \ + | _filter_scratch +$BTRFS_UTIL_PROG send -p $SCRATCH_MNT/snap1 $SCRATCH_MNT/snap2 \ + -f $send_files_dir/2.snap 2>&1 | _filter_scratch + +# Create a new filesystem, receive the send streams and verify that the file +# contents are the same as in the original filesystem and that the file holes +# exists in both snapshots. +_scratch_unmount +_scratch_mkfs >>$seqres.full 2>&1 +_scratch_mount +$BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $send_files_dir/1.snap >/dev/null +$BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $send_files_dir/2.snap >/dev/null + +echo +echo "File digests in the new filesystem:" +md5sum $SCRATCH_MNT/snap1/foo | _filter_scratch +md5sum $SCRATCH_MNT/snap1/bar | _filter_scratch +md5sum $SCRATCH_MNT/snap2/foo | _filter_scratch +md5sum $SCRATCH_MNT/snap2/bar | _filter_scratch + +echo +echo "File snap1/foo fiemap results in the new filesystem:" +$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap1/foo | _filter_fiemap +echo +echo "File snap1/bar fiemap results in the new filesystem:" +$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap1/bar | _filter_fiemap +echo +echo "File snap2/foo fiemap results in the new filesystem:" +$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap2/foo | _filter_fiemap +echo +echo "File snap2/bar fiemap results in the new filesystem:" +$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap2/bar | _filter_fiemap + +status=0 +exit diff --git a/tests/btrfs/137.out b/tests/btrfs/137.out new file mode 100644 index 00000000..8554399f --- /dev/null +++ b/tests/btrfs/137.out @@ -0,0 +1,63 @@ +QA output created by 137 +wrote 4096/4096 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 4096/4096 bytes at offset 0 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 4096/4096 bytes at offset 1052672 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 4096/4096 bytes at offset 1052672 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 4096/4096 bytes at offset 1052672 +XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +File digests in the original filesystem: +3e4309c7cc81f23d45e260a8f13ca860 SCRATCH_MNT/snap1/foo +f3934f0cf164e2efa1bab71f2f164990 SCRATCH_MNT/snap1/bar +f3934f0cf164e2efa1bab71f2f164990 SCRATCH_MNT/snap2/foo +d3dc847171f9081bd75d7a2d3b53d322 SCRATCH_MNT/snap2/bar + +File snap1/foo fiemap results in the original filesystem: +0: [0..7]: data + +File snap1/bar fiemap results in the original filesystem: +0: [0..7]: data +1: [8..2055]: hole +2: [2056..2063]: data + +File snap2/foo fiemap results in the original filesystem: +0: [0..7]: data +1: [8..2055]: hole +2: [2056..2063]: data + +File snap2/bar fiemap results in the original filesystem: +0: [0..7]: data +1: [8..2055]: hole +2: [2056..2063]: data + +At subvol SCRATCH_MNT/snap1 +At subvol SCRATCH_MNT/snap2 +At subvol snap1 + +File digests in the new filesystem: +3e4309c7cc81f23d45e260a8f13ca860 SCRATCH_MNT/snap1/foo +f3934f0cf164e2efa1bab71f2f164990 SCRATCH_MNT/snap1/bar +f3934f0cf164e2efa1bab71f2f164990 SCRATCH_MNT/snap2/foo +d3dc847171f9081bd75d7a2d3b53d322 SCRATCH_MNT/snap2/bar + +File snap1/foo fiemap results in the new filesystem: +0: [0..7]: data + +File snap1/bar fiemap results in the new filesystem: +0: [0..7]: data +1: [8..2055]: hole +2: [2056..2063]: data + +File snap2/foo fiemap results in the new filesystem: +0: [0..7]: data +1: [8..2055]: hole +2: [2056..2063]: data + +File snap2/bar fiemap results in the new filesystem: +0: [0..7]: data +1: [8..2055]: hole +2: [2056..2063]: data diff --git a/tests/btrfs/group b/tests/btrfs/group index ea88ba4e..009dea10 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -139,3 +139,4 @@ 134 auto quick send 135 auto quick send 136 auto convert +137 auto quick send -- 2.30.2