325dd915b2
streamOptimized does not support writes that do not span exactly one cluster. Furthermore, it cannot rewrite already allocated clusters. As such, many iotests do not work with it. Disable them. Signed-off-by: Max Reitz <mreitz@redhat.com> Message-id: 20190815153638.4600-6-mreitz@redhat.com Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
77 lines
2.3 KiB
Bash
Executable file
77 lines
2.3 KiB
Bash
Executable file
#!/usr/bin/env bash
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#
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# Test that sub-cluster allocating writes zero the rest of the cluster
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#
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# Copyright (C) 2010 IBM, Corp.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# creator
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owner=stefanha@linux.vnet.ibm.com
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seq=`basename $0`
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echo "QA output created by $seq"
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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_supported_fmt vmdk qcow qcow2 qed
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_supported_proto generic
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_unsupported_imgopts "subformat=streamOptimized"
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size=128M
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cluster_size=65536
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subcluster_offset=1024
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subcluster_size=2048
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_make_test_img $size
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# This first write causes an L2 table to be allocated so that the next write
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# doesn't need to allocate one and is therefore at the end of the image file.
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# Otherwise an L2 table could get in the way after the data cluster.
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echo
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echo "== writing first cluster to populate metadata =="
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$QEMU_IO -c "write -pP 0xde $cluster_size $cluster_size" "$TEST_IMG" | _filter_qemu_io
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echo
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echo "== writing at sub-cluster granularity =="
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$QEMU_IO -c "write -pP 0xa $subcluster_offset $subcluster_size" "$TEST_IMG" | _filter_qemu_io
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echo
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echo "== verify pattern =="
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$QEMU_IO -c "read -pP 0xa $subcluster_offset $subcluster_size" "$TEST_IMG" | _filter_qemu_io
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echo
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echo "== verify zeroes before sub-cluster pattern =="
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$QEMU_IO -c "read -pP 0 -l $subcluster_offset 0 $subcluster_size" "$TEST_IMG" | _filter_qemu_io
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echo
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echo "== verify zeroes after sub-cluster pattern =="
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$QEMU_IO -c "read -pP 0 -l 512 -s $subcluster_size $subcluster_offset $(( subcluster_size + 512 ))" "$TEST_IMG" | _filter_qemu_io
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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