tests/btrfs/030

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2014 Filipe Manana.  All Rights Reserved.
   4 #
   5 # FS QA Test No. btrfs/030
   6 #
   7 # Regression test for btrfs' incremental send feature:
   8 #
   9 # 1) Create several nested directories;
  10 # 2) Create a read only snapshot;
  11 # 3) Change the parentship of some of the deepest directories in a reverse
  12 #    way, so that parents become children and children become parents;
  13 # 4) Create another read only snapshot and use it for an incremental send
  14 #    relative to the first snapshot.
  15 #
  16 # At step 4 btrfs' send entered an infinite loop, increasing the memory it
  17 # used while building path strings until a krealloc was unable to allocate
  18 # more memory, which caused a warning dump in dmesg.
  19 #
  20 seq=`basename $0`
  21 seqres=$RESULT_DIR/$seq
  22 echo "QA output created by $seq"
  23
  24 tmp=`mktemp -d`
  25 status=1        # failure is the default!
  26 trap "_cleanup; exit \$status" 0 1 2 3 15
  27
  28 _cleanup()
  29 {
  30     rm -fr $tmp
  31 }
  32
  33 # get standard environment, filters and checks
  34 . ./common/rc
  35 . ./common/filter
  36
  37 # real QA test starts here
  38 _supported_fs btrfs
  39 _supported_os Linux
  40 _require_scratch
  41 _require_fssum
  42
  43 rm -f $seqres.full
  44
  45 _scratch_mkfs >/dev/null 2>&1
  46 _scratch_mount
  47
  48
  49 mkdir -p $SCRATCH_MNT/a/b/c
  50 echo "hello" > $SCRATCH_MNT/a/b/c/file.txt
  51 mkdir $SCRATCH_MNT/a/b/c/d
  52 mkdir $SCRATCH_MNT/a/b/c2
  53 mkdir $SCRATCH_MNT/a/b/www
  54 echo "hey" > $SCRATCH_MNT/a/b/foobar.txt
  55 mkdir -p $SCRATCH_MNT/a/b/c3/x/y
  56
  57 mkdir -p $SCRATCH_MNT/a/b/foo1/foo2
  58 echo "hey" > $SCRATCH_MNT/a/b/foo1/foo2/f.txt
  59 mkdir $SCRATCH_MNT/a/b/foo3
  60
  61 mkdir -p $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4
  62 echo "ola" > $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt
  63
  64 # Directory tree looks like:
  65 #
  66 # .                                      (ino 256)
  67 # |-- a/                                 (ino 257)
  68 #     |-- b/                             (ino 258)
  69 #         |-- c/                         (ino 259)
  70 #         |   |-- file.txt               (ino 260)
  71 #         |   |-- d/                     (ino 261)
  72 #         |
  73 #         |-- c2/                        (ino 262)
  74 #         |-- www/                       (ino 263)
  75 #         |-- foobar.txt                 (ino 264)
  76 #         |
  77 #         |-- c3/                        (ino 265)
  78 #         |   |-- x/                     (ino 266)
  79 #         |       |-- y/                 (ino 267)
  80 #         |
  81 #         |-- foo1/                      (ino 268)
  82 #         |    |---foo2/                 (ino 269)
  83 #         |         |---f.txt            (ino 270)
  84 #         |
  85 #         |-- foo3/                      (ino 271)
  86 #         |
  87 #         |-- bar1/                      (ino 272)
  88 #              |-- bar2/                 (ino 273)
  89 #                  |-- bar3/             (ino 274)
  90 #                      |-- bar4          (ino 275)
  91 #                           |--hello.txt (ino 276)
  92
  93 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
  94
  95 echo " world" >> $SCRATCH_MNT/a/b/c/file.txt
  96 mv $SCRATCH_MNT/a/b/c/d $SCRATCH_MNT/a/b/c2/d2
  97 mv $SCRATCH_MNT/a/b/c $SCRATCH_MNT/a/b/c2/d2/cc
  98 mv $SCRATCH_MNT/a/b/c3/x/y $SCRATCH_MNT/a/b/c2/y2
  99 mv $SCRATCH_MNT/a/b/c3/x $SCRATCH_MNT/a/b/c2/y2/x2
 100 mv $SCRATCH_MNT/a/b/c3 $SCRATCH_MNT/a/b/c2/y2/x2/Z
 101 mv $SCRATCH_MNT/a/b/www $SCRATCH_MNT/a/b/c2/y2/x2/WWW
 102 mv $SCRATCH_MNT/a/b/foobar.txt $SCRATCH_MNT/a/b/c2/y2/x2/qwerty.txt
 103 ln $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2/Z/file_link.txt
 104 mv $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2
 105
 106 mv $SCRATCH_MNT/a/b/foo3 $SCRATCH_MNT/a/b/foo1/foo33
 107 mv $SCRATCH_MNT/a/b/foo1/foo2 $SCRATCH_MNT/a/b/foo1/foo33/foo22
 108 mv $SCRATCH_MNT/a/b/foo1/foo33/foo22/f.txt \
 109     $SCRATCH_MNT/a/b/foo1/foo33/foo22/fff.txt
 110
 111 echo " hello" >> $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt
 112 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt \
 113     $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello2.txt
 114 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4 $SCRATCH_MNT/a/b/k44
 115 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3 $SCRATCH_MNT/a/b/k44
 116 mv $SCRATCH_MNT/a/b/bar1/bar2 $SCRATCH_MNT/a/b/k44/bar3
 117 mv $SCRATCH_MNT/a/b/bar1 $SCRATCH_MNT/a/b/k44/bar3/bar2/k11
 118
 119 # Directory tree now looks like:
 120 #
 121 # .                                         (ino 256)
 122 # |-- a/                                    (ino 257)
 123 #     |-- b/                                (ino 258)
 124 #         |-- c2/                           (ino 262)
 125 #         |   |-- d2/                       (ino 261)
 126 #         |   |   |-- cc/                   (ino 259)
 127 #         |   |
 128 #         |   |-- y2/                       (ino 267)
 129 #         |       |-- x2/                   (ino 266)
 130 #         |           |-- file.txt          (ino 260)
 131 #         |           |-- qwerty.txt        (ino 264)
 132 #         |           |-- WWW/              (ino 263)
 133 #         |           |-- Z/                (ino 265)
 134 #         |               |-- file_link.txt
 135 #         |
 136 #         |-- foo1/                         (ino 268)
 137 #         |    |---foo33/                   (ino 271)
 138 #         |          |---foo22/             (ino 269)
 139 #         |                |---fff.txt      (ino 270)
 140 #         |
 141 #         |-- k44/                          (ino 275)
 142 #              |-- hello2.txt               (ino 276)
 143 #              |-- bar3/                    (ino 274)
 144 #                   |-- bar2/               (ino 273)
 145 #                        |-- k11/           (ino 272)
 146
 147 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
 148
 149 run_check $FSSUM_PROG -A -f -w $tmp/1.fssum $SCRATCH_MNT/mysnap1
 150 run_check $FSSUM_PROG -A -f -w $tmp/2.fssum -x $SCRATCH_MNT/mysnap2/mysnap1 \
 151     $SCRATCH_MNT/mysnap2
 152
 153 _run_btrfs_util_prog send -f $tmp/1.snap $SCRATCH_MNT/mysnap1
 154 _run_btrfs_util_prog send -f $tmp/2.snap -p $SCRATCH_MNT/mysnap1 \
 155     $SCRATCH_MNT/mysnap2
 156
 157 _scratch_unmount
 158 _check_btrfs_filesystem $SCRATCH_DEV
 159 _scratch_mkfs >/dev/null 2>&1
 160 _scratch_mount
 161
 162 _run_btrfs_util_prog receive -f $tmp/1.snap $SCRATCH_MNT
 163 run_check $FSSUM_PROG -r $tmp/1.fssum $SCRATCH_MNT/mysnap1 2>> $seqres.full
 164
 165 _run_btrfs_util_prog receive -f $tmp/2.snap $SCRATCH_MNT
 166 run_check $FSSUM_PROG -r $tmp/2.fssum $SCRATCH_MNT/mysnap2 2>> $seqres.full
 167
 168 _scratch_unmount
 169 _check_btrfs_filesystem $SCRATCH_DEV
 170
 171 status=0
 172 exit