1#!/usr/bin/env bash 2# group: rw snapshot 3# 4# Combined test to grow the refcount table and test snapshots. 5# 6# Copyright (C) 2009 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 23owner=kwolf@redhat.com 24 25seq=`basename $0` 26echo "QA output created by $seq" 27 28status=1 # failure is the default! 29 30_cleanup() 31{ 32 _cleanup_test_img 33 true 34} 35trap "_cleanup; exit \$status" 0 1 2 3 15 36 37# get standard environment, filters and checks 38. ./common.rc 39. ./common.filter 40 41# actually any format that supports snapshots 42_supported_fmt qcow2 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 47 48echo 49echo "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. 59size=36M 60CLUSTER_SIZE=1k 61_make_test_img $size 62 63# Create two snapshots which fill the image with two different patterns 64echo "creating first snapshot" 65$QEMU_IO -c "aio_write -P 123 0 $size" "$TEST_IMG" | _filter_qemu_io 66$QEMU_IMG snapshot -c snap1 "$TEST_IMG" 67echo "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" 70 71# Now check the pattern 72echo "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 75echo "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 78 79echo 80echo "checking image for errors" 81_check_test_img 82 83# success, all done 84echo "*** done" 85rm -f $seq.full 86status=0 87