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 here=`pwd`
  40 tmp=`mktemp -d`
  41 status=1        # failure is the default!
  42 trap "_cleanup; exit \$status" 0 1 2 3 15
  43
  44 _cleanup()
  45 {
  46     rm -fr $tmp
  47 }
  48
  49 # get standard environment, filters and checks
  50 . ./common/rc
  51 . ./common/filter
  52
  53 # real QA test starts here
  54 _supported_fs btrfs
  55 _supported_os Linux
  56 _require_scratch
  57 _need_to_be_root
  58
  59 FSSUM_PROG=$here/src/fssum
  60 [ -x $FSSUM_PROG ] || _notrun "fssum not built"
  61
  62 rm -f $seqres.full
  63
  64 _scratch_mkfs >/dev/null 2>&1
  65 _scratch_mount
  66
  67
  68 mkdir -p $SCRATCH_MNT/a/b/c
  69 echo "hello" > $SCRATCH_MNT/a/b/c/file.txt
  70 mkdir $SCRATCH_MNT/a/b/c/d
  71 mkdir $SCRATCH_MNT/a/b/c2
  72 mkdir $SCRATCH_MNT/a/b/www
  73 echo "hey" > $SCRATCH_MNT/a/b/foobar.txt
  74 mkdir -p $SCRATCH_MNT/a/b/c3/x/y
  75
  76 # Directory tree looks like:
  77 #
  78 # .                         (ino 256)
  79 # |-- a/                    (ino 257)
  80 #     |-- b/                (ino 258)
  81 #         |-- c/            (ino 259)
  82 #         |   |-- file.txt  (ino 260)
  83 #         |   |-- d/        (ino 261)
  84 #         |
  85 #         |-- c2/           (ino 262)
  86 #         |-- www/          (ino 263)
  87 #         |-- foobar.txt    (ino 264)
  88 #         |
  89 #         |-- c3/           (ino 265)
  90 #             |-- x/        (ino 266)
  91 #                 |-- y/    (ino 267)
  92
  93 run_check $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
  94     $SCRATCH_MNT/mysnap1
  95
  96 echo " world" >> $SCRATCH_MNT/a/b/c/file.txt
  97 mv $SCRATCH_MNT/a/b/c/d $SCRATCH_MNT/a/b/c2/d2
  98 mv $SCRATCH_MNT/a/b/c $SCRATCH_MNT/a/b/c2/d2/cc
  99 mv $SCRATCH_MNT/a/b/c3/x/y $SCRATCH_MNT/a/b/c2/y2
 100 mv $SCRATCH_MNT/a/b/c3/x $SCRATCH_MNT/a/b/c2/y2/x2
 101 mv $SCRATCH_MNT/a/b/c3 $SCRATCH_MNT/a/b/c2/y2/x2/Z
 102 mv $SCRATCH_MNT/a/b/www $SCRATCH_MNT/a/b/c2/y2/x2/WWW
 103 mv $SCRATCH_MNT/a/b/foobar.txt $SCRATCH_MNT/a/b/c2/y2/x2/qwerty.txt
 104 ln $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2/Z/file_link.txt
 105 mv $SCRATCH_MNT/a/b/c2/d2/cc/file.txt $SCRATCH_MNT/a/b/c2/y2/x2
 106
 107 # Directory tree now looks like:
 108 #
 109 # .                                         (ino 256)
 110 # |-- a/                                    (ino 257)
 111 #     |-- b/                                (ino 258)
 112 #         |-- c2/                           (ino 262)
 113 #             |-- d2/                       (ino 261)
 114 #             |   |-- cc/                   (ino 259)
 115 #             |        |-- file.txt         (ino 260)
 116 #             |-- y2/                       (ino 267)
 117 #                 |-- x2/                   (ino 266)
 118 #                     |-- qwerty.txt        (ino 264)
 119 #                     |-- WWW/              (ino 263)
 120 #                     |-- Z/                (ino 265)
 121 #                         |-- file_link.txt
 122
 123 run_check $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
 124     $SCRATCH_MNT/mysnap2
 125
 126 run_check $FSSUM_PROG -A -f -w $tmp/1.fssum $SCRATCH_MNT/mysnap1
 127 run_check $FSSUM_PROG -A -f -w $tmp/2.fssum -x $SCRATCH_MNT/mysnap2/mysnap1 \
 128     $SCRATCH_MNT/mysnap2
 129
 130 run_check $BTRFS_UTIL_PROG send $SCRATCH_MNT/mysnap1 -f $tmp/1.snap
 131 run_check $BTRFS_UTIL_PROG send -p $SCRATCH_MNT/mysnap1 $SCRATCH_MNT/mysnap2 \
 132     -f $tmp/2.snap
 133
 134 _scratch_unmount
 135 _check_btrfs_filesystem $SCRATCH_DEV
 136 _scratch_mkfs >/dev/null 2>&1
 137 _scratch_mount
 138
 139 run_check $BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $tmp/1.snap
 140 run_check $FSSUM_PROG -r $tmp/1.fssum $SCRATCH_MNT/mysnap1 2>> $seqres.full
 141
 142 run_check $BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $tmp/2.snap
 143 run_check $FSSUM_PROG -r $tmp/2.fssum $SCRATCH_MNT/mysnap2 2>> $seqres.full
 144
 145 _scratch_unmount
 146 _check_btrfs_filesystem $SCRATCH_DEV
 147
 148 status=0
 149 exit