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author | 2016-06-03 03:33:22 +0000 | |
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committer | 2016-06-03 03:33:23 +0000 | |
commit | da27230f80795d0028333713f036d44c53cb0e68 (patch) | |
tree | b3d379eaf000adf72b36cb01cdf4d79c3e3f064c /qemu/tests/qemu-iotests/138 | |
parent | 0e68cb048bb8aadb14675f5d4286d8ab2fc35449 (diff) | |
parent | 437fd90c0250dee670290f9b714253671a990160 (diff) |
Merge "These changes are the raw update to qemu-2.6."
Diffstat (limited to 'qemu/tests/qemu-iotests/138')
-rwxr-xr-x | qemu/tests/qemu-iotests/138 | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/qemu/tests/qemu-iotests/138 b/qemu/tests/qemu-iotests/138 new file mode 100755 index 000000000..21650d819 --- /dev/null +++ b/qemu/tests/qemu-iotests/138 @@ -0,0 +1,72 @@ +#!/bin/bash +# +# General test case for qcow2's image check +# +# Copyright (C) 2015 Red Hat, Inc. +# +# 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=mreitz@redhat.com + +seq="$(basename $0)" +echo "QA output created by $seq" + +here="$PWD" +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 + +# This tests qocw2-specific low-level functionality +_supported_fmt qcow2 +_supported_proto file +_supported_os Linux + +echo +echo '=== Check on an image with a multiple of 2^32 clusters ===' +echo + +IMGOPTS=$(_optstr_add "$IMGOPTS" "cluster_size=512") \ + _make_test_img 512 + +# Allocate L2 table +$QEMU_IO -c 'write 0 512' "$TEST_IMG" | _filter_qemu_io + +# Put the data cluster at a multiple of 2 TB, resulting in the image apparently +# having a multiple of 2^32 clusters +# (To be more specific: It is at 32 PB) +poke_file "$TEST_IMG" 2048 "\x80\x80\x00\x00\x00\x00\x00\x00" + +# An offset of 32 PB results in qemu-img check having to allocate an in-memory +# refcount table of 128 TB (16 bit refcounts, 512 byte clusters). +# This should be generally too much for any system and thus fail. +# What this test is checking is that the qcow2 driver actually tries to allocate +# such a large amount of memory (and is consequently aborting) instead of having +# truncated the cluster count somewhere (which would result in much less memory +# being allocated and then a segfault occurring). +_check_test_img + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 |