tests/qemu-iotests/195

   1 #!/usr/bin/env bash
   2 # group: rw auto quick
   3 #
   4 # Test change-backing-file command
   5 #
   6 # Copyright (C) 2017 Red Hat, Inc.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21
  22 # creator
  23 owner=kwolf@redhat.com
  24
  25 seq=`basename $0`
  26 echo "QA output created by $seq"
  27
  28 status=1 # failure is the default!
  29
  30 _cleanup()
  31 {
  32     _cleanup_test_img
  33     _rm_test_img "$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 fuse
  43
  44 do_run_qemu()
  45 {
  46     echo Testing: "$@"
  47     $QEMU -nographic -qmp-pretty stdio -serial none "$@"
  48     echo
  49 }
  50
  51 run_qemu()
  52 {
  53     do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_imgfmt | _filter_qemu \
  54                           | _filter_qmp | _filter_qemu_io \
  55                           | _filter_generated_node_ids
  56 }
  57
  58 size=64M
  59 TEST_IMG="$TEST_IMG.base" _make_test_img $size
  60 TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT
  61 _make_test_img -b "$TEST_IMG.mid" -F $IMGFMT
  62
  63 echo
  64 echo "Change backing file of mid (opened read-only)"
  65 echo
  66
  67 run_qemu -drive if=none,file="$TEST_IMG",backing.node-name=mid <<EOF
  68 {"execute":"qmp_capabilities"}
  69 {"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"mid","backing-file":"/dev/null"}}
  70 {"execute":"quit"}
  71 EOF
  72
  73 TEST_IMG="$TEST_IMG.mid" _img_info
  74
  75 echo
  76 echo "Change backing file of top (opened writable)"
  77 echo
  78
  79 TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT
  80
  81 run_qemu -drive if=none,file="$TEST_IMG",node-name=top <<EOF
  82 {"execute":"qmp_capabilities"}
  83 {"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"top","backing-file":"/dev/null"}}
  84 {"execute":"quit"}
  85 EOF
  86
  87 _img_info
  88
  89 # success, all done
  90 echo "*** done"
  91 rm -f $seq.full
  92 status=0