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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 23 owner=kwolf@redhat.com 24 25 seq=`basename $0` 26 echo "QA output created by $seq" 27 28 status=1 # failure is the default! 29 30 _cleanup() 31 { 32 _cleanup_test_img 33 true 34 } 35 trap "_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 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 CLUSTER_SIZE=1k 61 _make_test_img $size 62 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" 70 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 78 79 echo 80 echo "checking image for errors" 81 _check_test_img 82 83 # success, all done 84 echo "*** done" 85 rm -f $seq.full 86 status=0