tests/qemu-iotests/195

   1 #!/bin/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 $seq"
  26
  27 here=`pwd`
  28 status=1 # failure is the default!
  29
  30 _cleanup()
  31 {
  32     _cleanup_test_img
  33     rm -f "$TEST_IMG.mid"
  34 }
  35 trap "_cleanup; exit \$status" 0 1 2 3 15
  36
  37 # get standard environment, filters and checks
  38 . ./common.rc
  39 . ./common.filter
  40
  41 _supported_fmt qcow2
  42 _supported_proto file
  43 _supported_os Linux
  44
  45 function do_run_qemu()
  46 {
  47     echo Testing: "$@"
  48     $QEMU -nographic -qmp-pretty stdio -serial none "$@"
  49     echo
  50 }
  51
  52 function run_qemu()
  53 {
  54     do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_imgfmt | _filter_qemu \
  55                           | _filter_qmp | _filter_qemu_io \
  56                           | _filter_generated_node_ids
  57 }
  58
  59 size=64M
  60 TEST_IMG="$TEST_IMG.base" _make_test_img $size
  61 TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base"
  62 _make_test_img -b "$TEST_IMG.mid"
  63
  64 echo
  65 echo "Change backing file of mid (opened read-only)"
  66 echo
  67
  68 run_qemu -drive if=none,file="$TEST_IMG",backing.node-name=mid <<EOF
  69 {"execute":"qmp_capabilities"}
  70 {"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"mid","backing-file":"/dev/null"}}
  71 {"execute":"quit"}
  72 EOF
  73
  74 TEST_IMG="$TEST_IMG.mid" _img_info
  75
  76 echo
  77 echo "Change backing file of top (opened writable)"
  78 echo
  79
  80 TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base"
  81
  82 run_qemu -drive if=none,file="$TEST_IMG",node-name=top <<EOF
  83 {"execute":"qmp_capabilities"}
  84 {"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"top","backing-file":"/dev/null"}}
  85 {"execute":"quit"}
  86 EOF
  87
  88 _img_info
  89
  90 # success, all done
  91 echo "*** done"
  92 rm -f $seq.full
  93 status=0