015

   1 #!/bin/sh
   2 #
   3 # Combined test to grow the refcount table and test snapshots.
   4 #
   5 # Copyright (C) 2009 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, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  20 # USA
  21 #
  22
  23 # creator
  24 owner=kwolf@redhat.com
  25
  26 seq=`basename $0`
  27 echo "QA output created by $seq"
  28
  29 here=`pwd`
  30 tmp=/tmp/$$
  31 status=1        # failure is the default!
  32
  33 _cleanup()
  34 {
  35         _cleanup_test_img
  36         true
  37 }
  38 trap "_cleanup; exit \$status" 0 1 2 3 15
  39
  40 # get standard environment, filters and checks
  41 . ./common.rc
  42 . ./common.filter
  43
  44 # actually any format that supports snapshots
  45 _supported_fmt qcow2
  46 _supported_os Linux
  47
  48 echo
  49 echo "creating image"
  50
  51 # With 1k clusters a refcount block contains 512 clusters
  52 # This makes 512k of the image file covered by a refcount block
  53 # A refcount table that spans one clusters has 128 refcount
  54 # tables which makes up 64M in the image file.
  55 #
  56 # We use a 36M image, so initially we can be sure that only one cluster is used
  57 # for the refcount table. On the other hand this is big enough to cause a
  58 # refcount table growth when rewriting the image after creating one snapshot.
  59 size=36M
  60 _make_test_img -o cluster_size=1k $size
  61
  62 # Create two snapshots which fill the image with two different patterns
  63 echo "creating first snapshot"
  64 $QEMU_IO -c "aio_write -P 123 0 $size" $TEST_IMG | _filter_qemu_io
  65 $QEMU_IMG snapshot -c snap1 $TEST_IMG
  66 echo "creating second snapshot"
  67 $QEMU_IO -c "aio_write -P 165 0 $size" $TEST_IMG | _filter_qemu_io
  68 $QEMU_IMG snapshot -c snap2 $TEST_IMG
  69
  70 # Now check the pattern
  71 echo "checking first snapshot"
  72 $QEMU_IMG snapshot -a snap1 $TEST_IMG
  73 $QEMU_IO -c "aio_read -P 123 0 $size" $TEST_IMG | _filter_qemu_io
  74 echo "checking second snapshot"
  75 $QEMU_IMG snapshot -a snap2 $TEST_IMG
  76 $QEMU_IO -c "aio_read -P 165 0 $size" $TEST_IMG | _filter_qemu_io
  77
  78 echo
  79 echo "checking image for errors"
  80 _check_test_img
  81
  82 # success, all done
  83 echo "*** done"
  84 rm -f $seq.full
  85 status=0