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 $seq"
  26
  27 status=1        # failure is the default!
  28
  29 _cleanup()
  30 {
  31     _cleanup_test_img
  32     rm -f "$TEST_IMG".[123].base
  33 }
  34 trap "_cleanup; exit \$status" 0 1 2 3 15
  35
  36 # get standard environment, filters and checks
  37 . ./common.rc
  38 . ./common.filter
  39
  40 # Any format supporting backing files
  41 _supported_fmt qcow2 qed
  42 _supported_proto file
  43 _supported_os Linux
  44
  45
  46 size=128M
  47 _make_test_img $size
  48 $QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG"
  49
  50 echo
  51 echo "== backing file references self =="
  52 _img_info --backing-chain
  53
  54 _make_test_img $size
  55 mv "$TEST_IMG" "$TEST_IMG.base"
  56 _make_test_img -b "$TEST_IMG.base" $size
  57 $QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG.base"
  58
  59 echo
  60 echo "== parent references self =="
  61 _img_info --backing-chain
  62
  63 _make_test_img $size
  64 mv "$TEST_IMG" "$TEST_IMG.1.base"
  65 _make_test_img -b "$TEST_IMG.1.base" $size
  66 mv "$TEST_IMG" "$TEST_IMG.2.base"
  67 _make_test_img -b "$TEST_IMG.2.base" $size
  68 mv "$TEST_IMG" "$TEST_IMG.3.base"
  69 _make_test_img -b "$TEST_IMG.3.base" $size
  70 $QEMU_IMG rebase -u -b "$TEST_IMG.2.base" "$TEST_IMG.1.base"
  71
  72 echo
  73 echo "== ancestor references another ancestor =="
  74 _img_info --backing-chain
  75
  76 _make_test_img $size
  77 mv "$TEST_IMG" "$TEST_IMG.1.base"
  78 _make_test_img -b "$TEST_IMG.1.base" $size
  79 mv "$TEST_IMG" "$TEST_IMG.2.base"
  80 _make_test_img -b "$TEST_IMG.2.base" $size
  81
  82 echo
  83 echo "== finite chain of length 3 (human) =="
  84 _img_info --backing-chain
  85
  86 echo
  87 echo "== finite chain of length 3 (json) =="
  88 _img_info --backing-chain --output=json
  89
  90 # success, all done
  91 echo "*** done"
  92 rm -f $seq.full
  93 status=0