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Philippe Mathieu-Daudé11a82d12019-03-07 15:58:38 +01001#!/usr/bin/env bash
Max Reitz097b5002015-09-09 18:09:47 +02002#
3# General test case for qcow2's image check
4#
5# Copyright (C) 2015 Red Hat, Inc.
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=mreitz@redhat.com
23
24seq="$(basename $0)"
25echo "QA output created by $seq"
26
Max Reitz097b5002015-09-09 18:09:47 +020027status=1 # failure is the default!
28
29_cleanup()
30{
31 _cleanup_test_img
32}
33trap "_cleanup; exit \$status" 0 1 2 3 15
34
35# get standard environment, filters and checks
36. ./common.rc
37. ./common.filter
38
Max Reitze696f332019-11-07 17:36:47 +010039# This tests qcow2-specific low-level functionality
Max Reitz097b5002015-09-09 18:09:47 +020040_supported_fmt qcow2
41_supported_proto file
42_supported_os Linux
Max Reitz3be20242019-11-07 17:37:07 +010043# With an external data file, data clusters are not refcounted
44# (and so qemu-img check does not check their refcount)
45_unsupported_imgopts data_file
Max Reitz097b5002015-09-09 18:09:47 +020046
47echo
48echo '=== Check on an image with a multiple of 2^32 clusters ==='
49echo
50
Max Reitz407fb562019-11-07 17:36:57 +010051_make_test_img -o "cluster_size=512" 512
Max Reitz097b5002015-09-09 18:09:47 +020052
53# Allocate L2 table
54$QEMU_IO -c 'write 0 512' "$TEST_IMG" | _filter_qemu_io
55
56# Put the data cluster at a multiple of 2 TB, resulting in the image apparently
57# having a multiple of 2^32 clusters
58# (To be more specific: It is at 32 PB)
Vladimir Sementsov-Ogievskiya5fff8d2019-02-27 16:14:30 +030059poke_file "$TEST_IMG" $((2048 + 8)) "\x00\x80\x00\x00\x00\x00\x00\x00"
Max Reitz097b5002015-09-09 18:09:47 +020060
61# An offset of 32 PB results in qemu-img check having to allocate an in-memory
Vladimir Sementsov-Ogievskiya5fff8d2019-02-27 16:14:30 +030062# refcount table of 128 TB (16 bit refcounts, 512 byte clusters), if qemu-img
63# don't check that referenced data cluster is far beyond the end of file.
64# But starting from 4.0, qemu-img does this check, and instead of "Cannot
65# allocate memory", we have an error showing that l2 entry is invalid.
Max Reitz097b5002015-09-09 18:09:47 +020066_check_test_img
67
68# success, all done
69echo "*** done"
70rm -f $seq.full
71status=0