| #!/usr/bin/env bash | |
| # group: rw snapshot | |
| # | |
| # Combined test to grow the refcount table and test snapshots. | |
| # | |
| # Copyright (C) 2009 Red Hat, Inc. | |
| # | |
| # This program is free software; you can redistribute it and/or modify | |
| # it under the terms of the GNU General Public License as published by | |
| # the Free Software Foundation; either version 2 of the License, or | |
| # (at your option) any later version. | |
| # | |
| # This program is distributed in the hope that it will be useful, | |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| # GNU General Public License for more details. | |
| # | |
| # You should have received a copy of the GNU General Public License | |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| # | |
| # creator | |
| owner=kwolf@redhat.com | |
| seq=`basename $0` | |
| echo "QA output created by $seq" | |
| status=1 # failure is the default! | |
| _cleanup() | |
| { | |
| _cleanup_test_img | |
| true | |
| } | |
| trap "_cleanup; exit \$status" 0 1 2 3 15 | |
| # get standard environment, filters and checks | |
| . ./common.rc | |
| . ./common.filter | |
| # actually any format that supports snapshots | |
| _supported_fmt qcow2 | |
| _supported_proto generic | |
| # Internal snapshots are (currently) impossible with refcount_bits=1, | |
| # and generally impossible with external data files | |
| _unsupported_imgopts 'refcount_bits=1[^0-9]' data_file | |
| echo | |
| echo "creating image" | |
| # With 1k clusters a refcount block contains 512 clusters | |
| # This makes 512k of the image file covered by a refcount block | |
| # A refcount table that spans one clusters has 128 refcount | |
| # tables which makes up 64M in the image file. | |
| # | |
| # We use a 36M image, so initially we can be sure that only one cluster is used | |
| # for the refcount table. On the other hand this is big enough to cause a | |
| # refcount table growth when rewriting the image after creating one snapshot. | |
| size=36M | |
| CLUSTER_SIZE=1k | |
| _make_test_img $size | |
| # Create two snapshots which fill the image with two different patterns | |
| echo "creating first snapshot" | |
| $QEMU_IO -c "aio_write -P 123 0 $size" "$TEST_IMG" | _filter_qemu_io | |
| $QEMU_IMG snapshot -c snap1 "$TEST_IMG" | |
| echo "creating second snapshot" | |
| $QEMU_IO -c "aio_write -P 165 0 $size" "$TEST_IMG" | _filter_qemu_io | |
| $QEMU_IMG snapshot -c snap2 "$TEST_IMG" | |
| # Now check the pattern | |
| echo "checking first snapshot" | |
| $QEMU_IMG snapshot -a snap1 "$TEST_IMG" | |
| $QEMU_IO -c "aio_read -P 123 0 $size" "$TEST_IMG" | _filter_qemu_io | |
| echo "checking second snapshot" | |
| $QEMU_IMG snapshot -a snap2 "$TEST_IMG" | |
| $QEMU_IO -c "aio_read -P 165 0 $size" "$TEST_IMG" | _filter_qemu_io | |
| echo | |
| echo "checking image for errors" | |
| _check_test_img | |
| # success, all done | |
| echo "*** done" | |
| rm -f $seq.full | |
| status=0 |