tests/qemu-iotests/066

   1 #!/bin/bash
   2 #
   3 # Test case for discarding preallocated zero clusters in qcow2
   4 #
   5 # Copyright (C) 2013 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=mreitz@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 }
  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 # This tests qocw2-specific low-level functionality
  41 _supported_fmt qcow2
  42 _supported_proto generic
  43 _supported_os Linux
  44
  45 IMGOPTS="compat=1.1"
  46 IMG_SIZE=64M
  47
  48 echo
  49 echo "=== Testing snapshotting an image with zero clusters ==="
  50 echo
  51 _make_test_img $IMG_SIZE
  52 # Write some normal clusters, zero them (creating preallocated zero clusters)
  53 # and discard those
  54 $QEMU_IO -c "write 0 256k" -c "write -z 0 256k" -c "discard 0 256k" "$TEST_IMG" \
  55          | _filter_qemu_io
  56 # Check the image (there shouldn't be any leaks)
  57 _check_test_img
  58
  59 # success, all done
  60 echo "*** done"
  61 rm -f $seq.full
  62 status=0