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Annotation of qemu/tests/qemu-iotests/015, revision 1.1.1.1

1.1       root        1: #!/bin/bash
                      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, see <http://www.gnu.org/licenses/>.
                     19: #
                     20: 
                     21: # creator
                     22: [email protected]
                     23: 
                     24: seq=`basename $0`
                     25: echo "QA output created by $seq"
                     26: 
                     27: here=`pwd`
                     28: tmp=/tmp/$$
                     29: status=1       # failure is the default!
                     30: 
                     31: _cleanup()
                     32: {
                     33:        _cleanup_test_img
                     34:        true
                     35: }
                     36: trap "_cleanup; exit \$status" 0 1 2 3 15
                     37: 
                     38: # get standard environment, filters and checks
                     39: . ./common.rc
                     40: . ./common.filter
                     41: 
                     42: # actually any format that supports snapshots
                     43: _supported_fmt qcow2
                     44: _supported_proto generic
                     45: _supported_os Linux
                     46: 
                     47: echo
                     48: echo "creating image"
                     49: 
                     50: # With 1k clusters a refcount block contains 512 clusters
                     51: # This makes 512k of the image file covered by a refcount block
                     52: # A refcount table that spans one clusters has 128 refcount
                     53: # tables which makes up 64M in the image file.
                     54: #
                     55: # We use a 36M image, so initially we can be sure that only one cluster is used
                     56: # for the refcount table. On the other hand this is big enough to cause a
                     57: # refcount table growth when rewriting the image after creating one snapshot.
                     58: size=36M
                     59: CLUSTER_SIZE=1k
                     60: _make_test_img $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

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