diff options
| -rwxr-xr-x | tests/qemu-iotests/027 | 77 | ||||
| -rw-r--r-- | tests/qemu-iotests/027.out | 23 | ||||
| -rw-r--r-- | tests/qemu-iotests/group | 1 |
3 files changed, 101 insertions, 0 deletions
diff --git a/tests/qemu-iotests/027 b/tests/qemu-iotests/027 new file mode 100755 index 0000000000..67ecffcfdc --- /dev/null +++ b/tests/qemu-iotests/027 @@ -0,0 +1,77 @@ +#!/bin/bash +# +# Test that sub-cluster allocating writes zero the rest of the cluster +# +# Copyright (C) 2010 IBM, Corp. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# + +# creator +owner=stefanha@linux.vnet.ibm.com + +seq=`basename $0` +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! + +_cleanup() +{ + _cleanup_test_img +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common.rc +. ./common.filter + +_supported_fmt vmdk qcow qcow2 +_supported_os Linux + + +size=128M +cluster_size=65536 +subcluster_offset=1024 +subcluster_size=2048 +_make_test_img $size + +# This first write causes an L2 table to be allocated so that the next write +# doesn't need to allocate one and is therefore at the end of the image file. +# Otherwise an L2 table could get in the way after the data cluster. +echo +echo "== writing first cluster to populate metadata ==" +$QEMU_IO -c "write -pP 0xde $cluster_size $cluster_size" $TEST_IMG | _filter_qemu_io + +echo +echo "== writing at sub-cluster granularity ==" +$QEMU_IO -c "write -pP 0xa $subcluster_offset $subcluster_size" $TEST_IMG | _filter_qemu_io + +echo +echo "== verify pattern ==" +$QEMU_IO -c "read -pP 0xa $subcluster_offset $subcluster_size" $TEST_IMG | _filter_qemu_io + +echo +echo "== verify zeroes before sub-cluster pattern ==" +$QEMU_IO -c "read -pP 0 -l $subcluster_offset 0 $subcluster_size" $TEST_IMG | _filter_qemu_io + +echo +echo "== verify zeroes after sub-cluster pattern ==" +$QEMU_IO -c "read -pP 0 -l 512 -s $subcluster_size $subcluster_offset $(( subcluster_size + 512 ))" $TEST_IMG | _filter_qemu_io + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 diff --git a/tests/qemu-iotests/027.out b/tests/qemu-iotests/027.out new file mode 100644 index 0000000000..a45c303724 --- /dev/null +++ b/tests/qemu-iotests/027.out @@ -0,0 +1,23 @@ +QA output created by 027 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 + +== writing first cluster to populate metadata == +wrote 65536/65536 bytes at offset 65536 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== writing at sub-cluster granularity == +wrote 2048/2048 bytes at offset 1024 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== verify pattern == +read 2048/2048 bytes at offset 1024 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== verify zeroes before sub-cluster pattern == +read 2048/2048 bytes at offset 0 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== verify zeroes after sub-cluster pattern == +read 2560/2560 bytes at offset 1024 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +*** done diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index 44581a95e9..4c8c4198e4 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -33,3 +33,4 @@ 024 rw backing auto 025 rw auto 026 rw blkdbg auto +027 rw auto |