tests/qemu-iotests/195

   1 #!/usr/bin/env bash
   2 #
   3 # Test change-backing-file command
   4 #
   5 # Copyright (C) 2017 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=kwolf@redhat.com
  23
  24 seq=`basename $0`
  25 echo "QA output created by $seq"
  26
  27 status=1 # failure is the default!
  28
  29 _cleanup()
  30 {
  31     _cleanup_test_img
  32     _rm_test_img "$TEST_IMG.mid"
  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 _supported_fmt qcow2
  41 _supported_proto file
  42
  43 do_run_qemu()
  44 {
  45     echo Testing: "$@"
  46     $QEMU -nographic -qmp-pretty stdio -serial none "$@"
  47     echo
  48 }
  49
  50 run_qemu()
  51 {
  52     do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_imgfmt | _filter_qemu \
  53                           | _filter_qmp | _filter_qemu_io \
  54                           | _filter_generated_node_ids
  55 }
  56
  57 size=64M
  58 TEST_IMG="$TEST_IMG.base" _make_test_img $size
  59 TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT
  60 _make_test_img -b "$TEST_IMG.mid" -F $IMGFMT
  61
  62 echo
  63 echo "Change backing file of mid (opened read-only)"
  64 echo
  65
  66 run_qemu -drive if=none,file="$TEST_IMG",backing.node-name=mid <<EOF
  67 {"execute":"qmp_capabilities"}
  68 {"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"mid","backing-file":"/dev/null"}}
  69 {"execute":"quit"}
  70 EOF
  71
  72 TEST_IMG="$TEST_IMG.mid" _img_info
  73
  74 echo
  75 echo "Change backing file of top (opened writable)"
  76 echo
  77
  78 TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT
  79
  80 run_qemu -drive if=none,file="$TEST_IMG",node-name=top <<EOF
  81 {"execute":"qmp_capabilities"}
  82 {"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"top","backing-file":"/dev/null"}}
  83 {"execute":"quit"}
  84 EOF
  85
  86 _img_info
  87
  88 # success, all done
  89 echo "*** done"
  90 rm -f $seq.full
  91 status=0