xref: /openbmc/qemu/tests/qemu-iotests/027 (revision ca693d1c)
1#!/usr/bin/env 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
22owner=stefanha@linux.vnet.ibm.com
23
24seq=`basename $0`
25echo "QA output created by $seq"
26
27status=1	# failure is the default!
28
29_cleanup()
30{
31	_cleanup_test_img
32}
33trap "_cleanup; exit \$status" 0 1 2 3 15
34
35# get standard environment, filters and checks
36. ./common.rc
37. ./common.filter
38
39_supported_fmt vmdk qcow qcow2 qed
40_supported_proto generic
41
42
43size=128M
44cluster_size=65536
45subcluster_offset=1024
46subcluster_size=2048
47_make_test_img $size
48
49# This first write causes an L2 table to be allocated so that the next write
50# doesn't need to allocate one and is therefore at the end of the image file.
51# Otherwise an L2 table could get in the way after the data cluster.
52echo
53echo "== writing first cluster to populate metadata =="
54$QEMU_IO -c "write -pP 0xde $cluster_size $cluster_size" "$TEST_IMG" | _filter_qemu_io
55
56echo
57echo "== writing at sub-cluster granularity =="
58$QEMU_IO -c "write -pP 0xa $subcluster_offset $subcluster_size" "$TEST_IMG" | _filter_qemu_io
59
60echo
61echo "== verify pattern =="
62$QEMU_IO -c "read -pP 0xa $subcluster_offset $subcluster_size" "$TEST_IMG" | _filter_qemu_io
63
64echo
65echo "== verify zeroes before sub-cluster pattern =="
66$QEMU_IO -c "read -pP 0 -l $subcluster_offset 0 $subcluster_size" "$TEST_IMG" | _filter_qemu_io
67
68echo
69echo "== verify zeroes after sub-cluster pattern =="
70$QEMU_IO -c "read -pP 0 -l 512 -s $subcluster_size $subcluster_offset $(( subcluster_size + 512 ))" "$TEST_IMG" | _filter_qemu_io
71
72# success, all done
73echo "*** done"
74rm -f $seq.full
75status=0
76