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fstests: btrfs, test for send with clone operations
Test that an incremental send operation which issues clone operations works for files that have a full path containing more than one parent directory component. This used to fail before the following patch for the linux kernel: "[PATCH] Btrfs: send, fix extent buffer tree lock assertion failure" Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Filipe Manana
committed by
Dave Chinner
Dave Chinner
parent
911efb0897
commit
84aea94669
Executable
+109
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#! /bin/bash
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# FS QA Test No. btrfs/117
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#
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# Test that an incremental send operation which issues clone operations works
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# for files that have a full path containing more than one parent directory
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# component.
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#
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#-----------------------------------------------------------------------
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#
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# Copyright (C) 2016 SUSE Linux Products GmbH. All Rights Reserved.
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# Author: Filipe Manana <fdmanana@suse.com>
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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=`mktemp -d`
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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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cd /
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rm -f $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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. ./common/reflink
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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_cp_reflink
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_need_to_be_root
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rm -f $seqres.full
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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mkdir -p $SCRATCH_MNT/a/b/c
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$XFS_IO_PROG -f -c "pwrite -S 0xfd 0 128K" $SCRATCH_MNT/a/b/c/x | _filter_xfs_io
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_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/snap1
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# Create a bunch of small and empty files, this is just to make sure our
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# subvolume's btree gets more than 1 leaf, a condition necessary to trigger a
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# past bug (1000 files is enough even for a leaf/node size of 64K, the largest
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# possible size).
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for ((i = 1; i <= 1000; i++)); do
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echo -n > $SCRATCH_MNT/a/b/c/z_$i
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done
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# Create a clone of file x's extent and write some data to the middle of this
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# new file, this is to guarantee the incremental send operation below issues
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# a clone operation.
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cp --reflink=always $SCRATCH_MNT/a/b/c/x $SCRATCH_MNT/a/b/c/y
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$XFS_IO_PROG -c "pwrite -S 0xab 32K 16K" $SCRATCH_MNT/a/b/c/y | _filter_xfs_io
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# Will be used as an extra source root for clone operations for the incremental
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# send operation below.
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_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/clones_snap
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_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/snap2
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_run_btrfs_util_prog send $SCRATCH_MNT/snap1 -f $tmp/1.snap
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_run_btrfs_util_prog send $SCRATCH_MNT/clones_snap -f $tmp/clones.snap
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_run_btrfs_util_prog send -p $SCRATCH_MNT/snap1 \
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-c $SCRATCH_MNT/clones_snap $SCRATCH_MNT/snap2 -f $tmp/2.snap
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echo "File digests in the original filesystem:"
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md5sum $SCRATCH_MNT/snap1/a/b/c/x | _filter_scratch
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md5sum $SCRATCH_MNT/snap2/a/b/c/x | _filter_scratch
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md5sum $SCRATCH_MNT/snap2/a/b/c/y | _filter_scratch
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_scratch_unmount
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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_run_btrfs_util_prog receive $SCRATCH_MNT -f $tmp/1.snap
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_run_btrfs_util_prog receive $SCRATCH_MNT -f $tmp/clones.snap
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_run_btrfs_util_prog receive $SCRATCH_MNT -f $tmp/2.snap
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echo "File digests in the new filesystem:"
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# Should match the digests we had in the original filesystem.
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md5sum $SCRATCH_MNT/snap1/a/b/c/x | _filter_scratch
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md5sum $SCRATCH_MNT/snap2/a/b/c/x | _filter_scratch
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md5sum $SCRATCH_MNT/snap2/a/b/c/y | _filter_scratch
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status=0
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exit
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@@ -0,0 +1,13 @@
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QA output created by 117
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wrote 131072/131072 bytes at offset 0
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XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 16384/16384 bytes at offset 32768
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XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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File digests in the original filesystem:
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38bf19185758f77c41d712b8bf74b61f SCRATCH_MNT/snap1/a/b/c/x
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38bf19185758f77c41d712b8bf74b61f SCRATCH_MNT/snap2/a/b/c/x
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d607e49e9085627d561bb117d8b197b7 SCRATCH_MNT/snap2/a/b/c/y
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File digests in the new filesystem:
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38bf19185758f77c41d712b8bf74b61f SCRATCH_MNT/snap1/a/b/c/x
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38bf19185758f77c41d712b8bf74b61f SCRATCH_MNT/snap2/a/b/c/x
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d607e49e9085627d561bb117d8b197b7 SCRATCH_MNT/snap2/a/b/c/y
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@@ -117,3 +117,4 @@
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114 auto qgroup
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115 auto qgroup
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116 auto quick metadata
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117 auto quick send clone
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