tests/btrfs/155

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (C) 2017 SUSE Linux Products GmbH. All Rights Reserved.
   4 #
   5 # FS QA Test No. btrfs/155
   6 #
   7 # Test that an incremental send operation works if a file that has multiple
   8 # hard links has some of its hard links renamed in the send snapshot, with one
   9 # of them getting the same path that some other inode had in the send snapshot.
  10 #
  11 seq=`basename $0`
  12 seqres=$RESULT_DIR/$seq
  13 echo "QA output created by $seq"
  14
  15 tmp=/tmp/$$
  16 status=1        # failure is the default!
  17 trap "_cleanup; exit \$status" 0 1 2 3 15
  18
  19 _cleanup()
  20 {
  21         cd /
  22         rm -fr $send_files_dir
  23         rm -f $tmp.*
  24 }
  25
  26 # get standard environment, filters and checks
  27 . ./common/rc
  28 . ./common/filter
  29
  30 # real QA test starts here
  31 _supported_fs btrfs
  32 _require_test
  33 _require_scratch
  34 _require_fssum
  35
  36 send_files_dir=$TEST_DIR/btrfs-test-$seq
  37
  38 rm -f $seqres.full
  39 rm -fr $send_files_dir
  40 mkdir $send_files_dir
  41
  42 _scratch_mkfs >>$seqres.full 2>&1
  43 _scratch_mount
  44
  45 mkdir $SCRATCH_MNT/a
  46 touch $SCRATCH_MNT/a/f1
  47 mkdir -p $SCRATCH_MNT/a/b/c
  48 ln $SCRATCH_MNT/a/f1 $SCRATCH_MNT/a/b/c/f1l1
  49 touch $SCRATCH_MNT/a/b/f2
  50 mkdir $SCRATCH_MNT/d
  51 mv $SCRATCH_MNT/a/b/c/f1l1 $SCRATCH_MNT/d/f1l1_2
  52 ln $SCRATCH_MNT/a/b/f2 $SCRATCH_MNT/a/f2l1
  53 ln $SCRATCH_MNT/a/b/f2 $SCRATCH_MNT/d/f2l2
  54 mv $SCRATCH_MNT/a/f1 $SCRATCH_MNT/d/f1_2
  55
  56 # Filesystem looks like:
  57 #
  58 # .                                                      (ino 256)
  59 # |---- a/                                               (ino 257)
  60 # |     |---- b/                                         (ino 259)
  61 # |     |     |---- c/                                   (ino 260)
  62 # |     |     |---- f2                                   (ino 261)
  63 # |     |
  64 # |     |---- f2l1                                       (ino 261)
  65 # |
  66 # |---- d/                                               (ino 262)
  67 #       |---- f1l1_2                                     (ino 258)
  68 #       |---- f2l2                                       (ino 261)
  69 #       |---- f1_2                                       (ino 258)
  70 #
  71 $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
  72         $SCRATCH_MNT/mysnap1 > /dev/null
  73
  74 $BTRFS_UTIL_PROG send -f $send_files_dir/1.snap \
  75         $SCRATCH_MNT/mysnap1 2>&1 1>/dev/null | _filter_scratch
  76
  77 mv $SCRATCH_MNT/d $SCRATCH_MNT/a/b/d2
  78 mv $SCRATCH_MNT/a/f2l1 $SCRATCH_MNT/d
  79 mkdir $SCRATCH_MNT/a/f2l1
  80 ln $SCRATCH_MNT/a/b/d2/f1_2 $SCRATCH_MNT/a/b/f1l2
  81 mv $SCRATCH_MNT/a/b $SCRATCH_MNT/a/f2l1/b2
  82 mv $SCRATCH_MNT/a/f2l1/b2/d2 $SCRATCH_MNT/a/f2l1/b2/c/d3
  83 mv $SCRATCH_MNT/a/f2l1/b2/c/d3/f2l2 $SCRATCH_MNT/a/f2l1/b2/c/d3/f2l2_2
  84
  85 # Filesystem now looks like:
  86 #
  87 # .                                                      (ino 256)
  88 # |---- a/                                               (ino 257)
  89 # |     |---- f2l1/                                      (ino 263)
  90 # |             |---- b2/                                (ino 259)
  91 # |                   |---- c/                           (ino 260)
  92 # |                   |     |---- d3                     (ino 262)
  93 # |                   |           |---- f1l1_2           (ino 258)
  94 # |                   |           |---- f2l2_2           (ino 261)
  95 # |                   |           |---- f1_2             (ino 258)
  96 # |                   |
  97 # |                   |---- f2                           (ino 261)
  98 # |                   |---- f1l2                         (ino 258)
  99 # |
 100 # |---- d                                                (ino 261)
 101 #
 102
 103 $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
 104                  $SCRATCH_MNT/mysnap2 > /dev/null
 105 $BTRFS_UTIL_PROG send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \
 106                  $SCRATCH_MNT/mysnap2 2>&1 1>/dev/null | _filter_scratch
 107
 108 $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 109 $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \
 110         -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2
 111
 112 # Now recreate the filesystem by receiving both send streams and verify we get
 113 # the same content that the original filesystem had.
 114 _scratch_unmount
 115 _scratch_mkfs >>$seqres.full 2>&1
 116 _scratch_mount
 117
 118 $BTRFS_UTIL_PROG receive -f $send_files_dir/1.snap $SCRATCH_MNT > /dev/null
 119 # The incremental send operation below used to issue an unlink operation for the
 120 # path "d/f2l1" after it orphanized inode 262 (renamed it to o262-7-0) and after
 121 # it created the link named "d" for inode 261, which made the receiver fail on
 122 # the unlink operation with error code ENOTDIR. That unlink operation should
 123 # have had the path "o262-7-0/f2l2" instead.
 124 $BTRFS_UTIL_PROG receive -f $send_files_dir/2.snap $SCRATCH_MNT > /dev/null
 125 $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1
 126 $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2
 127
 128 status=0
 129 exit