027 (2331B)
1 #!/usr/bin/env bash 2 # group: rw auto quick 3 # 4 # Test that sub-cluster allocating writes zero the rest of the cluster 5 # 6 # Copyright (C) 2010 IBM, Corp. 7 # 8 # This program is free software; you can redistribute it and/or modify 9 # it under the terms of the GNU General Public License as published by 10 # the Free Software Foundation; either version 2 of the License, or 11 # (at your option) any later version. 12 # 13 # This program is distributed in the hope that it will be useful, 14 # but WITHOUT ANY WARRANTY; without even the implied warranty of 15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 # GNU General Public License for more details. 17 # 18 # You should have received a copy of the GNU General Public License 19 # along with this program. If not, see <http://www.gnu.org/licenses/>. 20 # 21 22 # creator 23 owner=stefanha@redhat.com 24 25 seq=`basename $0` 26 echo "QA output created by $seq" 27 28 status=1 # failure is the default! 29 30 _cleanup() 31 { 32 _cleanup_test_img 33 } 34 trap "_cleanup; exit \$status" 0 1 2 3 15 35 36 # get standard environment, filters and checks 37 . ./common.rc 38 . ./common.filter 39 40 _supported_fmt vmdk qcow qcow2 qed 41 _supported_proto generic 42 _unsupported_imgopts "subformat=streamOptimized" 43 44 45 size=128M 46 cluster_size=65536 47 subcluster_offset=1024 48 subcluster_size=2048 49 _make_test_img $size 50 51 # This first write causes an L2 table to be allocated so that the next write 52 # doesn't need to allocate one and is therefore at the end of the image file. 53 # Otherwise an L2 table could get in the way after the data cluster. 54 echo 55 echo "== writing first cluster to populate metadata ==" 56 $QEMU_IO -c "write -pP 0xde $cluster_size $cluster_size" "$TEST_IMG" | _filter_qemu_io 57 58 echo 59 echo "== writing at sub-cluster granularity ==" 60 $QEMU_IO -c "write -pP 0xa $subcluster_offset $subcluster_size" "$TEST_IMG" | _filter_qemu_io 61 62 echo 63 echo "== verify pattern ==" 64 $QEMU_IO -c "read -pP 0xa $subcluster_offset $subcluster_size" "$TEST_IMG" | _filter_qemu_io 65 66 echo 67 echo "== verify zeroes before sub-cluster pattern ==" 68 $QEMU_IO -c "read -pP 0 -l $subcluster_offset 0 $subcluster_size" "$TEST_IMG" | _filter_qemu_io 69 70 echo 71 echo "== verify zeroes after sub-cluster pattern ==" 72 $QEMU_IO -c "read -pP 0 -l 512 -s $subcluster_size $subcluster_offset $(( subcluster_size + 512 ))" "$TEST_IMG" | _filter_qemu_io 73 74 # success, all done 75 echo "*** done" 76 rm -f $seq.full 77 status=0