| 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 |