4 # Combined test to grow the refcount table and test snapshots.
6 # Copyright (C) 2009 Red Hat, Inc.
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.
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.
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/>.
23 owner=kwolf@redhat.com
26 echo "QA output created by $seq"
28 status=1 # failure is the default!
35 trap "_cleanup; exit \$status" 0 1 2 3 15
37 # get standard environment, filters and checks
41 # actually any format that supports snapshots
43 _supported_proto generic
44 # Internal snapshots are (currently) impossible with refcount_bits=1,
45 # and generally impossible with external data files
46 _unsupported_imgopts 'refcount_bits=1[^0-9]' data_file
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.
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.
63 # Create two snapshots which fill the image with two different patterns
64 echo "creating first snapshot"
65 $QEMU_IO -c "aio_write -P 123 0 $size" "$TEST_IMG" | _filter_qemu_io
66 $QEMU_IMG snapshot -c snap1 "$TEST_IMG"
67 echo "creating second snapshot"
68 $QEMU_IO -c "aio_write -P 165 0 $size" "$TEST_IMG" | _filter_qemu_io
69 $QEMU_IMG snapshot -c snap2 "$TEST_IMG"
71 # Now check the pattern
72 echo "checking first snapshot"
73 $QEMU_IMG snapshot -a snap1 "$TEST_IMG"
74 $QEMU_IO -c "aio_read -P 123 0 $size" "$TEST_IMG" | _filter_qemu_io
75 echo "checking second snapshot"
76 $QEMU_IMG snapshot -a snap2 "$TEST_IMG"
77 $QEMU_IO -c "aio_read -P 165 0 $size" "$TEST_IMG" | _filter_qemu_io
80 echo "checking image for errors"