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qcow2: list of bitmaps new test 242
A new test file 242 added to the qemu-iotests set. It checks the format of qcow2 specific information for the new added section that lists details of bitmaps. Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> Message-Id: <1549638368-530182-4-git-send-email-andrey.shinkevich@virtuozzo.com> Reviewed-by: Eric Blake <eblake@redhat.com> [eblake: pep8 compliance, avoid trailing blank line] Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Andrey Shinkevich
Eric Blake
parent
b8968c875f
commit
ddd113beed
3 changed files with 271 additions and 0 deletions
104
tests/qemu-iotests/242
Executable file
104
tests/qemu-iotests/242
Executable file
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@ -0,0 +1,104 @@
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#!/usr/bin/env python
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#
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# Test for qcow2 bitmap printed information
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#
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# Copyright (c) 2019 Virtuozzo International GmbH
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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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import iotests
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import json
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from iotests import qemu_img_create, qemu_io, qemu_img_pipe, \
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file_path, img_info_log, log, filter_qemu_io
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iotests.verify_image_format(supported_fmts=['qcow2'])
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disk = file_path('disk')
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chunk = 256 * 1024
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bitmap_flag_unknown = 1 << 2
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# flag_offset = 5*cluster_size + flag_offset_in_bitmap_directory_entry
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flag_offset = 0x5000f
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def print_bitmap(extra_args):
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log('qemu-img info dump:\n')
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img_info_log(disk, extra_args=extra_args)
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result = json.loads(qemu_img_pipe('info', '--force-share',
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'--output=json', disk))
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if 'bitmaps' in result['format-specific']['data']:
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bitmaps = result['format-specific']['data']['bitmaps']
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log('The same bitmaps in JSON format:')
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log(bitmaps, indent=2)
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else:
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log('No bitmap in JSON format output')
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def add_bitmap(bitmap_number, persistent, disabled):
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granularity = 1 << (13 + bitmap_number)
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bitmap_name = 'bitmap-' + str(bitmap_number-1)
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vm = iotests.VM().add_drive(disk)
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vm.launch()
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vm.qmp_log('block-dirty-bitmap-add', node='drive0', name=bitmap_name,
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granularity=granularity, persistent=persistent,
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disabled=disabled)
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vm.shutdown()
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def write_to_disk(offset, size):
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write = 'write {} {}'.format(offset, size)
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log(qemu_io('-c', write, disk), filters=[filter_qemu_io])
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def toggle_flag(offset):
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with open(disk, "r+b") as f:
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f.seek(offset, 0)
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c = f.read(1)
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toggled = chr(ord(c) ^ bitmap_flag_unknown)
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f.seek(-1, 1)
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f.write(toggled)
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qemu_img_create('-f', iotests.imgfmt, disk, '1M')
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for num in range(1, 4):
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disabled = False
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if num == 2:
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disabled = True
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log('Test {}'.format(num))
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add_bitmap(num, num > 1, disabled)
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write_to_disk((num-1) * chunk, chunk)
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print_bitmap([])
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log('')
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vm = iotests.VM().add_drive(disk)
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vm.launch()
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num += 1
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log('Test {}\nChecking "in-use" flag...'.format(num))
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print_bitmap(['--force-share'])
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vm.shutdown()
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num += 1
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log('\nTest {}'.format(num))
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qemu_img_create('-f', iotests.imgfmt, disk, '1M')
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add_bitmap(1, True, False)
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log('Write an unknown bitmap flag \'{}\' into a new QCOW2 image at offset {}'
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.format(hex(bitmap_flag_unknown), flag_offset))
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toggle_flag(flag_offset)
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img_info_log(disk)
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toggle_flag(flag_offset)
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log('Unset the unknown bitmap flag \'{}\' in the bitmap directory entry:\n'
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.format(hex(bitmap_flag_unknown)))
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img_info_log(disk)
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log('Test complete')
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166
tests/qemu-iotests/242.out
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166
tests/qemu-iotests/242.out
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@ -0,0 +1,166 @@
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Test 1
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{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 16384, "name": "bitmap-0", "node": "drive0", "persistent": false}}
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{"return": {}}
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wrote 262144/262144 bytes at offset 0
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256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-img info dump:
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image: TEST_IMG
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file format: IMGFMT
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virtual size: 1.0M (1048576 bytes)
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cluster_size: 65536
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Format specific information:
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compat: 1.1
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lazy refcounts: false
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refcount bits: 16
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corrupt: false
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No bitmap in JSON format output
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Test 2
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{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": true, "granularity": 32768, "name": "bitmap-1", "node": "drive0", "persistent": true}}
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{"return": {}}
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wrote 262144/262144 bytes at offset 262144
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256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-img info dump:
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image: TEST_IMG
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file format: IMGFMT
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virtual size: 1.0M (1048576 bytes)
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cluster_size: 65536
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Format specific information:
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compat: 1.1
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lazy refcounts: false
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bitmaps:
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[0]:
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flags:
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name: bitmap-1
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granularity: 32768
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refcount bits: 16
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corrupt: false
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The same bitmaps in JSON format:
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[
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{
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"flags": [],
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"granularity": 32768,
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"name": "bitmap-1"
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}
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]
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Test 3
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{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 65536, "name": "bitmap-2", "node": "drive0", "persistent": true}}
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{"return": {}}
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wrote 262144/262144 bytes at offset 524288
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256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-img info dump:
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image: TEST_IMG
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file format: IMGFMT
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virtual size: 1.0M (1048576 bytes)
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cluster_size: 65536
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Format specific information:
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compat: 1.1
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lazy refcounts: false
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bitmaps:
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[0]:
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flags:
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name: bitmap-1
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granularity: 32768
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[1]:
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flags:
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[0]: auto
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name: bitmap-2
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granularity: 65536
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refcount bits: 16
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corrupt: false
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The same bitmaps in JSON format:
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[
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{
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"flags": [],
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"granularity": 32768,
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"name": "bitmap-1"
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},
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{
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"flags": [
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"auto"
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],
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"granularity": 65536,
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"name": "bitmap-2"
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}
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]
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Test 4
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Checking "in-use" flag...
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qemu-img info dump:
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image: TEST_IMG
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file format: IMGFMT
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virtual size: 1.0M (1048576 bytes)
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cluster_size: 65536
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Format specific information:
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compat: 1.1
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lazy refcounts: false
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bitmaps:
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[0]:
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flags:
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[0]: in-use
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name: bitmap-1
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granularity: 32768
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[1]:
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flags:
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[0]: in-use
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[1]: auto
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name: bitmap-2
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granularity: 65536
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refcount bits: 16
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corrupt: false
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The same bitmaps in JSON format:
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[
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{
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"flags": [
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"in-use"
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],
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"granularity": 32768,
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"name": "bitmap-1"
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},
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{
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"flags": [
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"in-use",
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"auto"
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],
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"granularity": 65536,
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"name": "bitmap-2"
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}
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]
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Test 5
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{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 16384, "name": "bitmap-0", "node": "drive0", "persistent": true}}
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{"return": {}}
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Write an unknown bitmap flag '0x4' into a new QCOW2 image at offset 327695
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qemu-img: Could not open 'TEST_IMG': Bitmap 'bitmap-0' doesn't satisfy the constraints
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Unset the unknown bitmap flag '0x4' in the bitmap directory entry:
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image: TEST_IMG
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file format: IMGFMT
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virtual size: 1.0M (1048576 bytes)
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cluster_size: 65536
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Format specific information:
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compat: 1.1
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lazy refcounts: false
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bitmaps:
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[0]:
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flags:
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[0]: auto
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name: bitmap-0
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granularity: 16384
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refcount bits: 16
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corrupt: false
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Test complete
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@ -238,3 +238,4 @@
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238 auto quick
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239 rw auto quick
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240 auto quick
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242 rw auto quick
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