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