tests/btrfs/077

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (C) 2014 SUSE Linux Products GmbH. All Rights Reserved.
   4 #
   5 # FS QA Test No. btrfs/077
   6 #
   7 # Regression test for a btrfs incremental send issue.
   8 # If between two snapshots we rename an existing directory named X to Y and
   9 # make it a child (direct or not) of a new inode named X, we were delaying
  10 # the move/rename of the former directory unnecessarily, which would result
  11 # in attempting to rename the new directory from its orphan name to name X
  12 # prematurely. This made btrfs receive fail with an error message like the
  13 # following:
  14 #
  15 #   rename o261-7-0 -> merlin/RC/OSD failed
  16 #
  17 # This issue was a regression in the 3.16 kernel and got fixed by the following
  18 # linux kernel btrfs patch:
  19 #
  20 #   Btrfs: send, don't delay dir move if there's a new parent inode
  21 #
  22 seq=`basename $0`
  23 seqres=$RESULT_DIR/$seq
  24 echo "QA output created by $seq"
  25
  26 tmp=`mktemp -d`
  27 status=1        # failure is the default!
  28 trap "_cleanup; exit \$status" 0 1 2 3 15
  29
  30 _cleanup()
  31 {
  32     rm -fr $send_files_dir
  33     rm -fr $tmp
  34 }
  35
  36 # get standard environment, filters and checks
  37 . ./common/rc
  38 . ./common/filter
  39
  40 # real QA test starts here
  41 _supported_fs btrfs
  42 _require_scratch
  43 _require_fssum
  44
  45 send_files_dir=$TEST_DIR/btrfs-test-$seq
  46
  47 rm -f $seqres.full
  48 rm -fr $send_files_dir
  49 mkdir $send_files_dir
  50
  51 _scratch_mkfs >>$seqres.full 2>&1
  52 _scratch_mount
  53
  54 mkdir -p $SCRATCH_MNT/merlin/RC/OSD/Source
  55 mkdir -p $SCRATCH_MNT/fdm/RCz/OSDz/Sourcez
  56 mkdir -p $SCRATCH_MNT/Z/Z2
  57
  58 # Filesystem looks like:
  59 #
  60 # .                                                 (ino 256)
  61 # |---- merlin/                                     (ino 257)
  62 # |        |---- RC/                                (ino 258)
  63 # |              |----- OSD/                        (ino 259)
  64 # |                      |---- Source/              (ino 260)
  65 # |
  66 # |---- fdm/                                        (ino 261)
  67 # |       |---- RCz/                                (ino 262)
  68 # |             |----- OSDz/                        (ino 263)
  69 # |                     |---- Sourcez/              (ino 264)
  70 # |
  71 # |---- Z/                                          (ino 265)
  72 #       |---- Z2/                                   (ino 266)
  73 #
  74 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
  75
  76 mkdir $SCRATCH_MNT/OSD
  77 mv $SCRATCH_MNT/merlin/RC/OSD $SCRATCH_MNT/OSD/OSD-Plane_788
  78 mv $SCRATCH_MNT/OSD $SCRATCH_MNT/merlin/RC
  79
  80 mkdir $SCRATCH_MNT/OSDz
  81 mv $SCRATCH_MNT/Z/Z2 $SCRATCH_MNT/OSDz/xz2
  82 mv $SCRATCH_MNT/Z $SCRATCH_MNT/OSDz/xz2/xz
  83 mv $SCRATCH_MNT/fdm/RCz/OSDz $SCRATCH_MNT/OSDz/xz2/xz/OSD-Plane_788z
  84 mv $SCRATCH_MNT/OSDz $SCRATCH_MNT/fdm/RCz
  85
  86 # Filesystem now looks like:
  87 #
  88 #
  89 # .                                                                  (ino 256)
  90 # |---- merlin/                                                      (ino 257)
  91 # |       |---- RC/                                                  (ino 258)
  92 # |             |----- OSD/                                     (ino 267) (new)
  93 # |                     |---- OSD-Plane_788/                         (ino 259)
  94 # |                                    |---- Source/                 (ino 260)
  95 # |
  96 # |---- fdm/                                                         (ino 261)
  97 #         |---- RCz/                                                 (ino 262)
  98 #                |----- OSDz/                                   (ino 268) (new)
  99 #                        |--- xz2/                                   (ino 266)
 100 #                              |---- xz/                             (ino 265)
 101 #                                    |---- OSD-Plane_788z/           (ino 263)
 102 #                                                    |---- Sourcez/  (ino 264)
 103 #
 104
 105 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
 106
 107 run_check $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 108 run_check $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
 109         -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
 110
 111 _run_btrfs_util_prog send -f $send_files_dir/1.snap $SCRATCH_MNT/mysnap1
 112 _run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \
 113         $SCRATCH_MNT/mysnap2
 114
 115 _check_scratch_fs
 116
 117 _scratch_unmount
 118 _scratch_mkfs >>$seqres.full 2>&1
 119 _scratch_mount
 120
 121 _run_btrfs_util_prog receive -f $send_files_dir/1.snap $SCRATCH_MNT
 122 run_check $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 123
 124 _run_btrfs_util_prog receive -f $send_files_dir/2.snap $SCRATCH_MNT
 125 run_check $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
 126
 127 echo "Silence is golden"
 128
 129 status=0
 130 exit