tests/qemu-iotests/052

   1 #!/usr/bin/env bash
   2 # group: rw auto backing quick
   3 #
   4 # Test bdrv_pread/bdrv_pwrite using BDRV_O_SNAPSHOT
   5 #
   6 # Copyright (C) 2013 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=stefanha@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 }
  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 generic
  41 _supported_proto file
  42
  43 # Don't do O_DIRECT on tmpfs
  44 _supported_cache_modes writeback writethrough unsafe
  45
  46 size=128M
  47 _make_test_img $size
  48
  49 echo
  50 echo "== initializing whole image =="
  51 $QEMU_IO -c "write -z 0 $size" "$TEST_IMG" | _filter_qemu_io
  52
  53 echo
  54 echo "== reading whole image =="
  55 $QEMU_IO -s -c "read 0 $size" "$TEST_IMG" | _filter_qemu_io
  56
  57 echo
  58 echo "== writing whole image does not modify image =="
  59 $QEMU_IO -s -c "write -P 0xa 0 $size" "$TEST_IMG" | _filter_qemu_io
  60 $QEMU_IO -c "read -P 0 0 $size" "$TEST_IMG" | _filter_qemu_io
  61
  62 # success, all done
  63 echo "*** done"
  64 rm -f $seq.full
  65 status=0