tests/btrfs/077

   1 #! /bin/bash
   2 # FS QA Test No. btrfs/077
   3 #
   4 # Regression test for a btrfs incremental send issue.
   5 # If between two snapshots we rename an existing directory named X to Y and
   6 # make it a child (direct or not) of a new inode named X, we were delaying
   7 # the move/rename of the former directory unnecessarily, which would result
   8 # in attempting to rename the new directory from its orphan name to name X
   9 # prematurely. This made btrfs receive fail with an error message like the
  10 # following:
  11 #
  12 #   rename o261-7-0 -> merlin/RC/OSD failed
  13 #
  14 # This issue was a regression in the 3.16 kernel and got fixed by the following
  15 # linux kernel btrfs patch:
  16 #
  17 #   Btrfs: send, don't delay dir move if there's a new parent inode
  18 #
  19 #-----------------------------------------------------------------------
  20 # Copyright (C) 2014 SUSE Linux Products GmbH. All Rights Reserved.
  21 # Author: Filipe Manana <fdmanana@suse.com>
  22 #
  23 # This program is free software; you can redistribute it and/or
  24 # modify it under the terms of the GNU General Public License as
  25 # published by the Free Software Foundation.
  26 #
  27 # This program is distributed in the hope that it would be useful,
  28 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  29 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  30 # GNU General Public License for more details.
  31 #
  32 # You should have received a copy of the GNU General Public License
  33 # along with this program; if not, write the Free Software Foundation,
  34 # Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  35 #-----------------------------------------------------------------------
  36 #
  37
  38 seq=`basename $0`
  39 seqres=$RESULT_DIR/$seq
  40 echo "QA output created by $seq"
  41
  42 tmp=`mktemp -d`
  43 status=1        # failure is the default!
  44 trap "_cleanup; exit \$status" 0 1 2 3 15
  45
  46 _cleanup()
  47 {
  48     rm -fr $send_files_dir
  49     rm -fr $tmp
  50 }
  51
  52 # get standard environment, filters and checks
  53 . ./common/rc
  54 . ./common/filter
  55
  56 # real QA test starts here
  57 _supported_fs btrfs
  58 _supported_os Linux
  59 _require_scratch
  60 _require_fssum
  61
  62 send_files_dir=$TEST_DIR/btrfs-test-$seq
  63
  64 rm -f $seqres.full
  65 rm -fr $send_files_dir
  66 mkdir $send_files_dir
  67
  68 _scratch_mkfs >>$seqres.full 2>&1
  69 _scratch_mount
  70
  71 mkdir -p $SCRATCH_MNT/merlin/RC/OSD/Source
  72 mkdir -p $SCRATCH_MNT/fdm/RCz/OSDz/Sourcez
  73 mkdir -p $SCRATCH_MNT/Z/Z2
  74
  75 # Filesystem looks like:
  76 #
  77 # .                                                 (ino 256)
  78 # |---- merlin/                                     (ino 257)
  79 # |        |---- RC/                                (ino 258)
  80 # |              |----- OSD/                        (ino 259)
  81 # |                      |---- Source/              (ino 260)
  82 # |
  83 # |---- fdm/                                        (ino 261)
  84 # |       |---- RCz/                                (ino 262)
  85 # |             |----- OSDz/                        (ino 263)
  86 # |                     |---- Sourcez/              (ino 264)
  87 # |
  88 # |---- Z/                                          (ino 265)
  89 #       |---- Z2/                                   (ino 266)
  90 #
  91 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
  92
  93 mkdir $SCRATCH_MNT/OSD
  94 mv $SCRATCH_MNT/merlin/RC/OSD $SCRATCH_MNT/OSD/OSD-Plane_788
  95 mv $SCRATCH_MNT/OSD $SCRATCH_MNT/merlin/RC
  96
  97 mkdir $SCRATCH_MNT/OSDz
  98 mv $SCRATCH_MNT/Z/Z2 $SCRATCH_MNT/OSDz/xz2
  99 mv $SCRATCH_MNT/Z $SCRATCH_MNT/OSDz/xz2/xz
 100 mv $SCRATCH_MNT/fdm/RCz/OSDz $SCRATCH_MNT/OSDz/xz2/xz/OSD-Plane_788z
 101 mv $SCRATCH_MNT/OSDz $SCRATCH_MNT/fdm/RCz
 102
 103 # Filesystem now looks like:
 104 #
 105 #
 106 # .                                                                  (ino 256)
 107 # |---- merlin/                                                      (ino 257)
 108 # |       |---- RC/                                                  (ino 258)
 109 # |             |----- OSD/                                     (ino 267) (new)
 110 # |                     |---- OSD-Plane_788/                         (ino 259)
 111 # |                                    |---- Source/                 (ino 260)
 112 # |
 113 # |---- fdm/                                                         (ino 261)
 114 #         |---- RCz/                                                 (ino 262)
 115 #                |----- OSDz/                                   (ino 268) (new)
 116 #                        |--- xz2/                                   (ino 266)
 117 #                              |---- xz/                             (ino 265)
 118 #                                    |---- OSD-Plane_788z/           (ino 263)
 119 #                                                    |---- Sourcez/  (ino 264)
 120 #
 121
 122 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
 123
 124 run_check $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 125 run_check $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
 126         -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
 127
 128 _run_btrfs_util_prog send -f $send_files_dir/1.snap $SCRATCH_MNT/mysnap1
 129 _run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \
 130         $SCRATCH_MNT/mysnap2
 131
 132 _check_scratch_fs
 133
 134 _scratch_unmount
 135 _scratch_mkfs >>$seqres.full 2>&1
 136 _scratch_mount
 137
 138 _run_btrfs_util_prog receive -f $send_files_dir/1.snap $SCRATCH_MNT
 139 run_check $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 140
 141 _run_btrfs_util_prog receive -f $send_files_dir/2.snap $SCRATCH_MNT
 142 run_check $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
 143
 144 echo "Silence is golden"
 145
 146 status=0
 147 exit