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 . ./common/preamble
  23 _begin_fstest auto quick send snapshot
  24
  25 tmp=`mktemp -d`
  26
  27 # Override the default cleanup function.
  28 _cleanup()
  29 {
  30     rm -fr $send_files_dir
  31     rm -fr $tmp
  32 }
  33
  34 # Import common functions.
  35 . ./common/filter
  36
  37 # real QA test starts here
  38 _supported_fs btrfs
  39 _require_scratch
  40 _require_fssum
  41
  42 send_files_dir=$TEST_DIR/btrfs-test-$seq
  43
  44 rm -fr $send_files_dir
  45 mkdir $send_files_dir
  46
  47 _scratch_mkfs >>$seqres.full 2>&1
  48 _scratch_mount
  49
  50 mkdir -p $SCRATCH_MNT/merlin/RC/OSD/Source
  51 mkdir -p $SCRATCH_MNT/fdm/RCz/OSDz/Sourcez
  52 mkdir -p $SCRATCH_MNT/Z/Z2
  53
  54 # Filesystem looks like:
  55 #
  56 # .                                                 (ino 256)
  57 # |---- merlin/                                     (ino 257)
  58 # |        |---- RC/                                (ino 258)
  59 # |              |----- OSD/                        (ino 259)
  60 # |                      |---- Source/              (ino 260)
  61 # |
  62 # |---- fdm/                                        (ino 261)
  63 # |       |---- RCz/                                (ino 262)
  64 # |             |----- OSDz/                        (ino 263)
  65 # |                     |---- Sourcez/              (ino 264)
  66 # |
  67 # |---- Z/                                          (ino 265)
  68 #       |---- Z2/                                   (ino 266)
  69 #
  70 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
  71
  72 mkdir $SCRATCH_MNT/OSD
  73 mv $SCRATCH_MNT/merlin/RC/OSD $SCRATCH_MNT/OSD/OSD-Plane_788
  74 mv $SCRATCH_MNT/OSD $SCRATCH_MNT/merlin/RC
  75
  76 mkdir $SCRATCH_MNT/OSDz
  77 mv $SCRATCH_MNT/Z/Z2 $SCRATCH_MNT/OSDz/xz2
  78 mv $SCRATCH_MNT/Z $SCRATCH_MNT/OSDz/xz2/xz
  79 mv $SCRATCH_MNT/fdm/RCz/OSDz $SCRATCH_MNT/OSDz/xz2/xz/OSD-Plane_788z
  80 mv $SCRATCH_MNT/OSDz $SCRATCH_MNT/fdm/RCz
  81
  82 # Filesystem now looks like:
  83 #
  84 #
  85 # .                                                                  (ino 256)
  86 # |---- merlin/                                                      (ino 257)
  87 # |       |---- RC/                                                  (ino 258)
  88 # |             |----- OSD/                                     (ino 267) (new)
  89 # |                     |---- OSD-Plane_788/                         (ino 259)
  90 # |                                    |---- Source/                 (ino 260)
  91 # |
  92 # |---- fdm/                                                         (ino 261)
  93 #         |---- RCz/                                                 (ino 262)
  94 #                |----- OSDz/                                   (ino 268) (new)
  95 #                        |--- xz2/                                   (ino 266)
  96 #                              |---- xz/                             (ino 265)
  97 #                                    |---- OSD-Plane_788z/           (ino 263)
  98 #                                                    |---- Sourcez/  (ino 264)
  99 #
 100
 101 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
 102
 103 run_check $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 104 run_check $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
 105         -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
 106
 107 _run_btrfs_util_prog send -f $send_files_dir/1.snap $SCRATCH_MNT/mysnap1
 108 _run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \
 109         $SCRATCH_MNT/mysnap2
 110
 111 _check_scratch_fs
 112
 113 _scratch_unmount
 114 _scratch_mkfs >>$seqres.full 2>&1
 115 _scratch_mount
 116
 117 _run_btrfs_util_prog receive -f $send_files_dir/1.snap $SCRATCH_MNT
 118 run_check $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 119
 120 _run_btrfs_util_prog receive -f $send_files_dir/2.snap $SCRATCH_MNT
 121 run_check $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
 122
 123 echo "Silence is golden"
 124
 125 status=0
 126 exit