tests/qemu-iotests/043

   1 #!/bin/bash
   2 #
   3 # Test that qemu-img info --backing-chain detects infinite loops
   4 #
   5 # Copyright (C) 2012 Red Hat, Inc.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 # creator
  22 owner=stefanha@redhat.com
  23
  24 seq=`basename $0`
  25 echo "QA output created by $seq"
  26
  27 here=`pwd`
  28 tmp=/tmp/$$
  29 status=1        # failure is the default!
  30
  31 _cleanup()
  32 {
  33     _cleanup_test_img
  34     rm -f $TEST_IMG.[123].base
  35 }
  36 trap "_cleanup; exit \$status" 0 1 2 3 15
  37
  38 # get standard environment, filters and checks
  39 . ./common.rc
  40 . ./common.filter
  41
  42 # Any format supporting backing files
  43 _supported_fmt qcow2 qed
  44 _supported_proto generic
  45 _supported_os Linux
  46
  47
  48 size=128M
  49 _make_test_img $size
  50 $QEMU_IMG rebase -u -b $TEST_IMG $TEST_IMG
  51
  52 echo
  53 echo "== backing file references self =="
  54 _img_info --backing-chain
  55
  56 _make_test_img $size
  57 mv $TEST_IMG $TEST_IMG.base
  58 _make_test_img -b $TEST_IMG.base $size
  59 $QEMU_IMG rebase -u -b $TEST_IMG $TEST_IMG.base
  60
  61 echo
  62 echo "== parent references self =="
  63 _img_info --backing-chain
  64
  65 _make_test_img $size
  66 mv $TEST_IMG $TEST_IMG.1.base
  67 _make_test_img -b $TEST_IMG.1.base $size
  68 mv $TEST_IMG $TEST_IMG.2.base
  69 _make_test_img -b $TEST_IMG.2.base $size
  70 mv $TEST_IMG $TEST_IMG.3.base
  71 _make_test_img -b $TEST_IMG.3.base $size
  72 $QEMU_IMG rebase -u -b $TEST_IMG.2.base $TEST_IMG.1.base
  73
  74 echo
  75 echo "== ancestor references another ancestor =="
  76 _img_info --backing-chain
  77
  78 _make_test_img $size
  79 mv $TEST_IMG $TEST_IMG.1.base
  80 _make_test_img -b $TEST_IMG.1.base $size
  81 mv $TEST_IMG $TEST_IMG.2.base
  82 _make_test_img -b $TEST_IMG.2.base $size
  83
  84 echo
  85 echo "== finite chain of length 3 (human) =="
  86 _img_info --backing-chain
  87
  88 echo
  89 echo "== finite chain of length 3 (json) =="
  90 _img_info --backing-chain --output=json
  91
  92 # success, all done
  93 echo "*** done"
  94 rm -f $seq.full
  95 status=0