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Annotation of qemu/tests/qemu-iotests/027, revision 1.1

1.1     ! root        1: #!/bin/bash
        !             2: #
        !             3: # Test that sub-cluster allocating writes zero the rest of the cluster
        !             4: #
        !             5: # Copyright (C) 2010 IBM, Corp.
        !             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: }
        !            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: _supported_fmt vmdk qcow qcow2 qed
        !            42: _supported_proto generic
        !            43: _supported_os Linux
        !            44: 
        !            45: 
        !            46: size=128M
        !            47: cluster_size=65536
        !            48: subcluster_offset=1024
        !            49: subcluster_size=2048
        !            50: _make_test_img $size
        !            51: 
        !            52: # This first write causes an L2 table to be allocated so that the next write
        !            53: # doesn't need to allocate one and is therefore at the end of the image file.
        !            54: # Otherwise an L2 table could get in the way after the data cluster.
        !            55: echo
        !            56: echo "== writing first cluster to populate metadata =="
        !            57: $QEMU_IO -c "write -pP 0xde $cluster_size $cluster_size" $TEST_IMG | _filter_qemu_io
        !            58: 
        !            59: echo
        !            60: echo "== writing at sub-cluster granularity =="
        !            61: $QEMU_IO -c "write -pP 0xa $subcluster_offset $subcluster_size" $TEST_IMG | _filter_qemu_io
        !            62: 
        !            63: echo
        !            64: echo "== verify pattern =="
        !            65: $QEMU_IO -c "read -pP 0xa $subcluster_offset $subcluster_size" $TEST_IMG | _filter_qemu_io
        !            66: 
        !            67: echo
        !            68: echo "== verify zeroes before sub-cluster pattern =="
        !            69: $QEMU_IO -c "read -pP 0 -l $subcluster_offset 0 $subcluster_size" $TEST_IMG | _filter_qemu_io
        !            70: 
        !            71: echo
        !            72: echo "== verify zeroes after sub-cluster pattern =="
        !            73: $QEMU_IO -c "read -pP 0 -l 512 -s $subcluster_size $subcluster_offset $(( subcluster_size + 512 ))" $TEST_IMG | _filter_qemu_io
        !            74: 
        !            75: # success, all done
        !            76: echo "*** done"
        !            77: rm -f $seq.full
        !            78: status=0

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