tests/btrfs/030

   1 #! /bin/bash
   2 # FS QA Test No. btrfs/030
   3 #
   4 # Regression test for btrfs' incremental send feature:
   5 #
   6 # 1) Create several nested directories;
   7 # 2) Create a read only snapshot;
   8 # 3) Change the parentship of some of the deepest directories in a reverse
   9 #    way, so that parents become children and children become parents;
  10 # 4) Create another read only snapshot and use it for an incremental send
  11 #    relative to the first snapshot.
  12 #
  13 # At step 4 btrfs' send entered an infinite loop, increasing the memory it
  14 # used while building path strings until a krealloc was unable to allocate
  15 # more memory, which caused a warning dump in dmesg.
  16 #
  17 #-----------------------------------------------------------------------
  18 # Copyright (c) 2014 Filipe Manana.  All Rights Reserved.
  19 #
  20 # This program is free software; you can redistribute it and/or
  21 # modify it under the terms of the GNU General Public License as
  22 # published by the Free Software Foundation.
  23 #
  24 # This program is distributed in the hope that it would be useful,
  25 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  26 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27 # GNU General Public License for more details.
  28 #
  29 # You should have received a copy of the GNU General Public License
  30 # along with this program; if not, write the Free Software Foundation,
  31 # Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  32 #-----------------------------------------------------------------------
  33 #
  34
  35 seq=`basename $0`
  36 seqres=$RESULT_DIR/$seq
  37 echo "QA output created by $seq"
  38
  39 tmp=`mktemp -d`
  40 status=1        # failure is the default!
  41 trap "_cleanup; exit \$status" 0 1 2 3 15
  42
  43 _cleanup()
  44 {
  45     rm -fr $tmp
  46 }
  47
  48 # get standard environment, filters and checks
  49 . ./common/rc
  50 . ./common/filter
  51
  52 # real QA test starts here
  53 _supported_fs btrfs
  54 _supported_os Linux
  55 _require_scratch
  56 _require_fssum
  57
  58 rm -f $seqres.full
  59
  60 _scratch_mkfs >/dev/null 2>&1
  61 _scratch_mount
  62
  63
  64 mkdir -p $SCRATCH_MNT/a/b/c
  65 echo "hello" > $SCRATCH_MNT/a/b/c/file.txt
  66 mkdir $SCRATCH_MNT/a/b/c/d
  67 mkdir $SCRATCH_MNT/a/b/c2
  68 mkdir $SCRATCH_MNT/a/b/www
  69 echo "hey" > $SCRATCH_MNT/a/b/foobar.txt
  70 mkdir -p $SCRATCH_MNT/a/b/c3/x/y
  71
  72 mkdir -p $SCRATCH_MNT/a/b/foo1/foo2
  73 echo "hey" > $SCRATCH_MNT/a/b/foo1/foo2/f.txt
  74 mkdir $SCRATCH_MNT/a/b/foo3
  75
  76 mkdir -p $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4
  77 echo "ola" > $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt
  78
  79 # Directory tree looks like:
  80 #
  81 # .                                      (ino 256)
  82 # |-- a/                                 (ino 257)
  83 #     |-- b/                             (ino 258)
  84 #         |-- c/                         (ino 259)
  85 #         |   |-- file.txt               (ino 260)
  86 #         |   |-- d/                     (ino 261)
  87 #         |
  88 #         |-- c2/                        (ino 262)
  89 #         |-- www/                       (ino 263)
  90 #         |-- foobar.txt                 (ino 264)
  91 #         |
  92 #         |-- c3/                        (ino 265)
  93 #         |   |-- x/                     (ino 266)
  94 #         |       |-- y/                 (ino 267)
  95 #         |
  96 #         |-- foo1/                      (ino 268)
  97 #         |    |---foo2/                 (ino 269)
  98 #         |         |---f.txt            (ino 270)
  99 #         |
 100 #         |-- foo3/                      (ino 271)
 101 #         |
 102 #         |-- bar1/                      (ino 272)
 103 #              |-- bar2/                 (ino 273)
 104 #                  |-- bar3/             (ino 274)
 105 #                      |-- bar4          (ino 275)
 106 #                           |--hello.txt (ino 276)
 107
 108 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
 109
 110 echo " world" >> $SCRATCH_MNT/a/b/c/file.txt
 111 mv $SCRATCH_MNT/a/b/c/d $SCRATCH_MNT/a/b/c2/d2
 112 mv $SCRATCH_MNT/a/b/c $SCRATCH_MNT/a/b/c2/d2/cc
 113 mv $SCRATCH_MNT/a/b/c3/x/y $SCRATCH_MNT/a/b/c2/y2
 114 mv $SCRATCH_MNT/a/b/c3/x $SCRATCH_MNT/a/b/c2/y2/x2
 115 mv $SCRATCH_MNT/a/b/c3 $SCRATCH_MNT/a/b/c2/y2/x2/Z
 116 mv $SCRATCH_MNT/a/b/www $SCRATCH_MNT/a/b/c2/y2/x2/WWW
 117 mv $SCRATCH_MNT/a/b/foobar.txt $SCRATCH_MNT/a/b/c2/y2/x2/qwerty.txt
 118 ln $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2/Z/file_link.txt
 119 mv $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2
 120
 121 mv $SCRATCH_MNT/a/b/foo3 $SCRATCH_MNT/a/b/foo1/foo33
 122 mv $SCRATCH_MNT/a/b/foo1/foo2 $SCRATCH_MNT/a/b/foo1/foo33/foo22
 123 mv $SCRATCH_MNT/a/b/foo1/foo33/foo22/f.txt \
 124     $SCRATCH_MNT/a/b/foo1/foo33/foo22/fff.txt
 125
 126 echo " hello" >> $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt
 127 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello.txt \
 128     $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4/hello2.txt
 129 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3/bar4 $SCRATCH_MNT/a/b/k44
 130 mv $SCRATCH_MNT/a/b/bar1/bar2/bar3 $SCRATCH_MNT/a/b/k44
 131 mv $SCRATCH_MNT/a/b/bar1/bar2 $SCRATCH_MNT/a/b/k44/bar3
 132 mv $SCRATCH_MNT/a/b/bar1 $SCRATCH_MNT/a/b/k44/bar3/bar2/k11
 133
 134 # Directory tree now looks like:
 135 #
 136 # .                                         (ino 256)
 137 # |-- a/                                    (ino 257)
 138 #     |-- b/                                (ino 258)
 139 #         |-- c2/                           (ino 262)
 140 #         |   |-- d2/                       (ino 261)
 141 #         |   |   |-- cc/                   (ino 259)
 142 #         |   |
 143 #         |   |-- y2/                       (ino 267)
 144 #         |       |-- x2/                   (ino 266)
 145 #         |           |-- file.txt          (ino 260)
 146 #         |           |-- qwerty.txt        (ino 264)
 147 #         |           |-- WWW/              (ino 263)
 148 #         |           |-- Z/                (ino 265)
 149 #         |               |-- file_link.txt
 150 #         |
 151 #         |-- foo1/                         (ino 268)
 152 #         |    |---foo33/                   (ino 271)
 153 #         |          |---foo22/             (ino 269)
 154 #         |                |---fff.txt      (ino 270)
 155 #         |
 156 #         |-- k44/                          (ino 275)
 157 #              |-- hello2.txt               (ino 276)
 158 #              |-- bar3/                    (ino 274)
 159 #                   |-- bar2/               (ino 273)
 160 #                        |-- k11/           (ino 272)
 161
 162 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
 163
 164 run_check $FSSUM_PROG -A -f -w $tmp/1.fssum $SCRATCH_MNT/mysnap1
 165 run_check $FSSUM_PROG -A -f -w $tmp/2.fssum -x $SCRATCH_MNT/mysnap2/mysnap1 \
 166     $SCRATCH_MNT/mysnap2
 167
 168 _run_btrfs_util_prog send $SCRATCH_MNT/mysnap1 -f $tmp/1.snap
 169 _run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 $SCRATCH_MNT/mysnap2 \
 170     -f $tmp/2.snap
 171
 172 _scratch_unmount
 173 _check_btrfs_filesystem $SCRATCH_DEV
 174 _scratch_mkfs >/dev/null 2>&1
 175 _scratch_mount
 176
 177 _run_btrfs_util_prog receive $SCRATCH_MNT -f $tmp/1.snap
 178 run_check $FSSUM_PROG -r $tmp/1.fssum $SCRATCH_MNT/mysnap1 2>> $seqres.full
 179
 180 _run_btrfs_util_prog receive $SCRATCH_MNT -f $tmp/2.snap
 181 run_check $FSSUM_PROG -r $tmp/2.fssum $SCRATCH_MNT/mysnap2 2>> $seqres.full
 182
 183 _scratch_unmount
 184 _check_btrfs_filesystem $SCRATCH_DEV
 185
 186 status=0
 187 exit