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 $seq"
  26
  27 status=1        # failure is the default!
  28
  29 _cleanup()
  30 {
  31     _cleanup_test_img
  32     rm -f "$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
  44
  45 size=128M
  46 _make_test_img $size
  47 $QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG"
  48
  49 echo
  50 echo "== backing file references self =="
  51 _img_info --backing-chain
  52
  53 _make_test_img $size
  54 mv "$TEST_IMG" "$TEST_IMG.base"
  55 _make_test_img -b "$TEST_IMG.base" $size
  56 $QEMU_IMG rebase -u -b "$TEST_IMG" "$TEST_IMG.base"
  57
  58 echo
  59 echo "== parent references self =="
  60 _img_info --backing-chain
  61
  62 _make_test_img $size
  63 mv "$TEST_IMG" "$TEST_IMG.1.base"
  64 _make_test_img -b "$TEST_IMG.1.base" $size
  65 mv "$TEST_IMG" "$TEST_IMG.2.base"
  66 _make_test_img -b "$TEST_IMG.2.base" $size
  67 mv "$TEST_IMG" "$TEST_IMG.3.base"
  68 _make_test_img -b "$TEST_IMG.3.base" $size
  69 $QEMU_IMG rebase -u -b "$TEST_IMG.2.base" "$TEST_IMG.1.base"
  70
  71 echo
  72 echo "== ancestor references another ancestor =="
  73 _img_info --backing-chain
  74
  75 _make_test_img $size
  76 mv "$TEST_IMG" "$TEST_IMG.1.base"
  77 _make_test_img -b "$TEST_IMG.1.base" $size
  78 mv "$TEST_IMG" "$TEST_IMG.2.base"
  79 _make_test_img -b "$TEST_IMG.2.base" $size
  80
  81 echo
  82 echo "== finite chain of length 3 (human) =="
  83 _img_info --backing-chain
  84
  85 echo
  86 echo "== finite chain of length 3 (json) =="
  87 _img_info --backing-chain --output=json
  88
  89 # success, all done
  90 echo "*** done"
  91 rm -f $seq.full
  92 status=0