tests/qemu-iotests/043

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