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qemu-iotests: Test unknown qcow2 header extensions
The immportant thing here is that header extensions don't get silently dropped when the header is rewritten, e.g. during a rebase. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Kevin Wolf
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3 changed files with 149 additions and 0 deletions
72
tests/qemu-iotests/031
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72
tests/qemu-iotests/031
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#!/bin/bash
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#
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# Test that all qcow2 header extensions survive a header rewrite
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#
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# Copyright (C) 2011 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# creator
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owner=kwolf@redhat.com
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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. ./common.pattern
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# This tests qcow2-specific low-level functionality
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_supported_fmt qcow2
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_supported_proto generic
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_supported_os Linux
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CLUSTER_SIZE=65536
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echo
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echo === Create image with unknown header extension ===
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echo
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_make_test_img 64M
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./qcow2.py $TEST_IMG add-header-ext 0x12345678 "This is a test header extension"
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./qcow2.py $TEST_IMG dump-header
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_check_test_img
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echo
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echo === Rewrite header with no backing file ===
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echo
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$QEMU_IMG rebase -u -b "" $TEST_IMG
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./qcow2.py $TEST_IMG dump-header
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_check_test_img
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echo
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echo === Add a backing file and format ===
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echo
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$QEMU_IMG rebase -u -b "/some/backing/file/path" -F host_device $TEST_IMG
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./qcow2.py $TEST_IMG dump-header
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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76
tests/qemu-iotests/031.out
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76
tests/qemu-iotests/031.out
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QA output created by 031
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=== Create image with unknown header extension ===
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 cluster_size=65536
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magic 0x514649fb
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version 2
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backing_file_offset 0x0
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backing_file_size 0x0
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cluster_bits 16
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size 67108864
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crypt_method 0
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l1_size 1
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l1_table_offset 0x30000
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refcount_table_offset 0x10000
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refcount_table_clusters 1
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nb_snapshots 0
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snapshot_offset 0x0
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Header extension:
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magic 0x12345678
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length 31
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data 'This is a test header extension'
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No errors were found on the image.
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=== Rewrite header with no backing file ===
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magic 0x514649fb
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version 2
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backing_file_offset 0x0
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backing_file_size 0x0
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cluster_bits 16
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size 67108864
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crypt_method 0
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l1_size 1
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l1_table_offset 0x30000
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refcount_table_offset 0x10000
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refcount_table_clusters 1
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nb_snapshots 0
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snapshot_offset 0x0
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Header extension:
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magic 0x12345678
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length 31
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data 'This is a test header extension'
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No errors were found on the image.
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=== Add a backing file and format ===
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magic 0x514649fb
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version 2
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backing_file_offset 0x90
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backing_file_size 0x17
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cluster_bits 16
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size 67108864
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crypt_method 0
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l1_size 1
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l1_table_offset 0x30000
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refcount_table_offset 0x10000
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refcount_table_clusters 1
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nb_snapshots 0
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snapshot_offset 0x0
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Header extension:
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magic 0xe2792aca
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length 11
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data 'host_device'
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Header extension:
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magic 0x12345678
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length 31
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data 'This is a test header extension'
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*** done
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@ -37,3 +37,4 @@
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028 rw backing auto
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029 rw auto quick
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030 rw auto
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031 rw auto quick
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