tests/qemu-iotests/043

   1 #!/usr/bin/env 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 $seq"
  26
  27 status=1        # failure is the default!
  28
  29 _cleanup()
  30 {
  31     _cleanup_test_img
  32     for img in "$TEST_IMG".[123].base; do
  33         _rm_test_img "$img"
  34     done
  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 file
  45
  46
  47 size=128M
  48 _make_test_img $size
  49 $QEMU_IMG rebase -u -b "$TEST_IMG" -F $IMGFMT "$TEST_IMG"
  50
  51 echo
  52 echo "== backing file references self =="
  53 _img_info --backing-chain
  54
  55 _make_test_img $size
  56 mv "$TEST_IMG" "$TEST_IMG.base"
  57 _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $size
  58 $QEMU_IMG rebase -u -b "$TEST_IMG" -F $IMGFMT "$TEST_IMG.base"
  59
  60 echo
  61 echo "== parent references self =="
  62 _img_info --backing-chain
  63
  64 _make_test_img $size
  65 mv "$TEST_IMG" "$TEST_IMG.1.base"
  66 _make_test_img -b "$TEST_IMG.1.base" -F $IMGFMT $size
  67 mv "$TEST_IMG" "$TEST_IMG.2.base"
  68 _make_test_img -b "$TEST_IMG.2.base" -F $IMGFMT $size
  69 mv "$TEST_IMG" "$TEST_IMG.3.base"
  70 _make_test_img -b "$TEST_IMG.3.base" -F $IMGFMT $size
  71 $QEMU_IMG rebase -u -b "$TEST_IMG.2.base" -F $IMGFMT "$TEST_IMG.1.base"
  72
  73 echo
  74 echo "== ancestor references another ancestor =="
  75 _img_info --backing-chain
  76
  77 _make_test_img $size
  78 mv "$TEST_IMG" "$TEST_IMG.1.base"
  79 _make_test_img -b "$TEST_IMG.1.base" -F $IMGFMT $size
  80 mv "$TEST_IMG" "$TEST_IMG.2.base"
  81 _make_test_img -b "$TEST_IMG.2.base" -F $IMGFMT $size
  82
  83 echo
  84 echo "== finite chain of length 3 (human) =="
  85 # Exclude backing format, since qed differs from qcow2 on what gets stored
  86 _img_info --backing-chain | grep -v '^backing file format:'
  87
  88 echo
  89 echo "== finite chain of length 3 (json) =="
  90 _img_info --backing-chain --output=json | grep -v 'backing-filename-format'
  91
  92 # success, all done
  93 echo "*** done"
  94 rm -f $seq.full
  95 status=0