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btrfs: regression test for btrfs incremental send
This is a regression test for a btrfs incremental send issue. If between two snapshots we rename an existing directory named X to Y and make it a child (direct or not) of a new inode named X, we were delaying the move/rename of the former directory unnecessarily, which would result in attempting to rename the new directory from its orphan name to name X prematurely. This made btrfs receive fail with an error message like the following: rename o261-7-0 -> merlin/RC/OSD failed This issue was a regression in the 3.16 kernel and got fixed by the following linux kernel btrfs patch: Btrfs: send, don't delay dir move if there's a new parent inode Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Filipe Manana
committed by
Dave Chinner
Dave Chinner
parent
b5830f404f
commit
edaea8a075
+148
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#! /bin/bash
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# FS QA Test No. btrfs/077
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#
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# Regression test for a btrfs incremental send issue.
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# If between two snapshots we rename an existing directory named X to Y and
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# make it a child (direct or not) of a new inode named X, we were delaying
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# the move/rename of the former directory unnecessarily, which would result
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# in attempting to rename the new directory from its orphan name to name X
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# prematurely. This made btrfs receive fail with an error message like the
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# following:
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#
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# rename o261-7-0 -> merlin/RC/OSD failed
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#
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# This issue was a regression in the 3.16 kernel and got fixed by the following
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# linux kernel btrfs patch:
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#
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# Btrfs: send, don't delay dir move if there's a new parent inode
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#
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#-----------------------------------------------------------------------
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# Copyright (C) 2014 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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rm -fr $send_files_dir
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rm -fr $tmp
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# real QA test starts here
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch
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_require_fssum
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_need_to_be_root
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send_files_dir=$TEST_DIR/btrfs-test-$seq
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rm -f $seqres.full
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rm -fr $send_files_dir
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mkdir $send_files_dir
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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mkdir -p $SCRATCH_MNT/merlin/RC/OSD/Source
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mkdir -p $SCRATCH_MNT/fdm/RCz/OSDz/Sourcez
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mkdir -p $SCRATCH_MNT/Z/Z2
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# Filesystem looks like:
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#
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# . (ino 256)
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# |---- merlin/ (ino 257)
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# | |---- RC/ (ino 258)
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# | |----- OSD/ (ino 259)
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# | |---- Source/ (ino 260)
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# |
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# |---- fdm/ (ino 261)
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# | |---- RCz/ (ino 262)
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# | |----- OSDz/ (ino 263)
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# | |---- Sourcez/ (ino 264)
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# |
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# |---- Z/ (ino 265)
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# |---- Z2/ (ino 266)
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#
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_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
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mkdir $SCRATCH_MNT/OSD
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mv $SCRATCH_MNT/merlin/RC/OSD $SCRATCH_MNT/OSD/OSD-Plane_788
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mv $SCRATCH_MNT/OSD $SCRATCH_MNT/merlin/RC
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mkdir $SCRATCH_MNT/OSDz
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mv $SCRATCH_MNT/Z/Z2 $SCRATCH_MNT/OSDz/xz2
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mv $SCRATCH_MNT/Z $SCRATCH_MNT/OSDz/xz2/xz
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mv $SCRATCH_MNT/fdm/RCz/OSDz $SCRATCH_MNT/OSDz/xz2/xz/OSD-Plane_788z
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mv $SCRATCH_MNT/OSDz $SCRATCH_MNT/fdm/RCz
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# Filesystem now looks like:
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#
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#
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# . (ino 256)
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# |---- merlin/ (ino 257)
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# | |---- RC/ (ino 258)
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# | |----- OSD/ (ino 267) (new)
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# | |---- OSD-Plane_788/ (ino 259)
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# | |---- Source/ (ino 260)
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# |
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# |---- fdm/ (ino 261)
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# |---- RCz/ (ino 262)
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# |----- OSDz/ (ino 268) (new)
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# |--- xz2/ (ino 266)
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# |---- xz/ (ino 265)
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# |---- OSD-Plane_788z/ (ino 263)
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# |---- Sourcez/ (ino 264)
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#
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_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
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run_check $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
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run_check $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
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-x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
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_run_btrfs_util_prog send $SCRATCH_MNT/mysnap1 -f $send_files_dir/1.snap
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_run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 $SCRATCH_MNT/mysnap2 \
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-f $send_files_dir/2.snap
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_check_scratch_fs
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_scratch_unmount
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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_run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/1.snap
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run_check $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
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_run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/2.snap
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run_check $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
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echo "Silence is golden"
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status=0
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exit
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@@ -0,0 +1,2 @@
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QA output created by 077
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Silence is golden
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@@ -79,3 +79,4 @@
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074 auto defrag remount compress
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075 auto quick subvol
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076 auto quick
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077 auto quick
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