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btrfs: incremental send after moving a directory
Test that an incremental send operation works after moving a directory into a new parent directory, deleting its previous parent directory and creating a new inode that has the same inode number as the old parent. This issue is fixed by the following patch for the linux kernel: "Btrfs: incremental send, do not delay rename when parent inode is new" Signed-off-by: Robbie Ko <robbieko@synology.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Filipe Manana
Eryu Guan
Executable
+125
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#! /bin/bash
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# FS QA Test No. btrfs/134
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#
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# Test that an incremental send operation works after moving a directory into
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# a new parent directory, deleting its previous parent directory and creating
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# a new inode that has the same inode number as the old parent.
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#
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#-----------------------------------------------------------------------
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# Copyright (C) 2017 Synology Inc. All Rights Reserved.
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# Author: Robbie Ko <robbieko@synology.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=/tmp/$$
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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 -fr $send_files_dir
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# real QA test starts here
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_supported_fs btrfs
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_supported_os Linux
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_require_test
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_require_scratch
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_require_fssum
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send_files_dir=$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 $SCRATCH_MNT/dir257
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mkdir $SCRATCH_MNT/dir258
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mkdir $SCRATCH_MNT/dir259
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mv $SCRATCH_MNT/dir257 $SCRATCH_MNT/dir258/dir257
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# Filesystem looks like:
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#
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# . (ino 256, gen 3)
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# |--- dir258/ (ino 258, gen 7)
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# | |--- dir257/ (ino 257, gen 7)
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# |
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# |--- dir259/ (ino 259, gen 7)
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#
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$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
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$SCRATCH_MNT/mysnap1 > /dev/null
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mv $SCRATCH_MNT/dir258/dir257 $SCRATCH_MNT/dir257
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rmdir $SCRATCH_MNT/dir258
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rmdir $SCRATCH_MNT/dir259
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# Remount the filesystem so that the next created inodes will have the numbers
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# 258 and 259. This is because when a filesystem is mounted, btrfs sets the
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# subvolume's inode counter to a value corresponding to the highest inode number
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# in the subvolume plus 1. This inode counter is used to assign a unique number
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# to each new inode and it's incremented by 1 after very inode creation.
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# Note: we unmount and then mount instead of doing a mount with "-o remount"
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# because otherwise the inode counter remains at value 260.
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_scratch_cycle_mount
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touch $SCRATCH_MNT/file258
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mkdir $SCRATCH_MNT/new_dir259
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mv $SCRATCH_MNT/dir257 $SCRATCH_MNT/new_dir259/dir257
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# Filesystem now looks like:
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#
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# . (ino 256, gen 3)
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# |--- file258 (ino 258, gen 10)
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# |
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# |--- new_dir259/ (ino 259, gen 10)
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# |--- dir257/ (ino 257, gen 7)
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#
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$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
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$SCRATCH_MNT/mysnap2 > /dev/null
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$FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
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$FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
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-x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
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$BTRFS_UTIL_PROG send $SCRATCH_MNT/mysnap1 -f \
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$send_files_dir/1.snap 2>&1 1>/dev/null | _filter_scratch
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$BTRFS_UTIL_PROG send -p $SCRATCH_MNT/mysnap1 $SCRATCH_MNT/mysnap2 \
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-f $send_files_dir/2.snap 2>&1 1>/dev/null | _filter_scratch
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# Now recreate the filesystem by receiving both send streams and verify we get
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# the same content that the original filesystem had.
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_scratch_unmount
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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$BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $send_files_dir/1.snap > /dev/null
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$FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
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$BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $send_files_dir/2.snap > /dev/null
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$FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
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status=0
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exit
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@@ -0,0 +1,6 @@
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QA output created by 134
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At subvol SCRATCH_MNT/mysnap1
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At subvol SCRATCH_MNT/mysnap2
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At subvol mysnap1
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OK
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OK
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@@ -135,3 +135,4 @@
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131 auto quick
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132 auto enospc
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133 auto quick send
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134 auto quick send
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