new file mode 100755
@@ -0,0 +1,103 @@
+#!/usr/bin/env python
+#
+# Test for qcow2 bitmap printed information
+#
+# Copyright (c) 2019 Virtuozzo International GmbH
+#
+# 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/>.
+#
+
+import iotests
+import json
+from iotests import qemu_img_create, qemu_io, qemu_img_pipe, \
+ file_path, img_info_log, log, filter_qemu_io
+
+iotests.verify_image_format(supported_fmts=['qcow2'])
+
+disk = file_path('disk')
+chunk = 256*1024
+bitmap_flag_unknown = 1 << 2
+#flag_offset = 5*cluster_size + flag_offset_in_bitmap_directory_entry
+flag_offset = 0x5000f
+
+
+def print_bitmap(extra_args):
+ log('qemu-img info dump:\n')
+ img_info_log(disk, extra_args=extra_args)
+ result = json.loads(qemu_img_pipe('info', '--force-share',
+ '--output=json', disk))
+ if 'bitmaps' in result['format-specific']['data']:
+ bitmaps = result['format-specific']['data']['bitmaps']
+ log('The same bitmaps in JSON format:')
+ log(bitmaps, indent=2)
+ else:
+ log('No bitmap in JSON format output')
+
+
+def add_bitmap(bitmap_number, persistent, disabled):
+ granularity = 1 << (13 + bitmap_number)
+ bitmap_name = 'bitmap-' + str(bitmap_number-1)
+ vm = iotests.VM().add_drive(disk)
+ vm.launch()
+ vm.qmp_log('block-dirty-bitmap-add', node='drive0', name=bitmap_name,
+ granularity=granularity, persistent=persistent,
+ disabled=disabled)
+ vm.shutdown()
+
+
+def write_to_disk(offset, size):
+ write = 'write {} {}'.format(offset, size)
+ log(qemu_io('-c', write, disk), filters=[filter_qemu_io])
+
+
+def toggle_flag(offset):
+ with open(disk, "r+b") as f:
+ f.seek(offset, 0)
+ c = f.read(1)
+ toggled = chr(ord(c) ^ bitmap_flag_unknown)
+ f.seek(-1, 1)
+ f.write(toggled)
+
+
+qemu_img_create('-f', iotests.imgfmt, disk, '1M')
+
+for num in range(1, 4):
+ disabled = False
+ if num == 2:
+ disabled = True
+ log('Test {}'.format(num))
+ add_bitmap(num, num > 1, disabled)
+ write_to_disk((num-1) * chunk, chunk)
+ print_bitmap([])
+ log('')
+
+vm = iotests.VM().add_drive(disk)
+vm.launch()
+num += 1
+log('Test {}\nChecking "in-use" flag...'.format(num))
+print_bitmap(['--force-share'])
+vm.shutdown()
+
+num += 1
+log('\nTest {}'.format(num))
+qemu_img_create('-f', iotests.imgfmt, disk, '1M')
+add_bitmap(1, True, False)
+log('Write an unknown bitmap flag \'{}\' into a new QCOW2 image at offset {}'
+ .format(hex(bitmap_flag_unknown), flag_offset))
+toggle_flag(flag_offset)
+img_info_log(disk)
+toggle_flag(flag_offset)
+log('Unset the unknown bitmap flag \'{}\' in the bitmap directory entry:\n'
+ .format(hex(bitmap_flag_unknown)))
+img_info_log(disk)
new file mode 100644
@@ -0,0 +1,165 @@
+Test 1
+{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 16384, "name": "bitmap-0", "node": "drive0", "persistent": false}}
+{"return": {}}
+wrote 262144/262144 bytes at offset 0
+256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+qemu-img info dump:
+
+image: TEST_IMG
+file format: IMGFMT
+virtual size: 1.0M (1048576 bytes)
+cluster_size: 65536
+Format specific information:
+ compat: 1.1
+ lazy refcounts: false
+ refcount bits: 16
+ corrupt: false
+
+No bitmap in JSON format output
+
+Test 2
+{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": true, "granularity": 32768, "name": "bitmap-1", "node": "drive0", "persistent": true}}
+{"return": {}}
+wrote 262144/262144 bytes at offset 262144
+256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+qemu-img info dump:
+
+image: TEST_IMG
+file format: IMGFMT
+virtual size: 1.0M (1048576 bytes)
+cluster_size: 65536
+Format specific information:
+ compat: 1.1
+ lazy refcounts: false
+ bitmaps:
+ [0]:
+ flags:
+ name: bitmap-1
+ granularity: 32768
+ refcount bits: 16
+ corrupt: false
+
+The same bitmaps in JSON format:
+[
+ {
+ "flags": [],
+ "granularity": 32768,
+ "name": "bitmap-1"
+ }
+]
+
+Test 3
+{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 65536, "name": "bitmap-2", "node": "drive0", "persistent": true}}
+{"return": {}}
+wrote 262144/262144 bytes at offset 524288
+256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+qemu-img info dump:
+
+image: TEST_IMG
+file format: IMGFMT
+virtual size: 1.0M (1048576 bytes)
+cluster_size: 65536
+Format specific information:
+ compat: 1.1
+ lazy refcounts: false
+ bitmaps:
+ [0]:
+ flags:
+ name: bitmap-1
+ granularity: 32768
+ [1]:
+ flags:
+ [0]: auto
+ name: bitmap-2
+ granularity: 65536
+ refcount bits: 16
+ corrupt: false
+
+The same bitmaps in JSON format:
+[
+ {
+ "flags": [],
+ "granularity": 32768,
+ "name": "bitmap-1"
+ },
+ {
+ "flags": [
+ "auto"
+ ],
+ "granularity": 65536,
+ "name": "bitmap-2"
+ }
+]
+
+Test 4
+Checking "in-use" flag...
+qemu-img info dump:
+
+image: TEST_IMG
+file format: IMGFMT
+virtual size: 1.0M (1048576 bytes)
+cluster_size: 65536
+Format specific information:
+ compat: 1.1
+ lazy refcounts: false
+ bitmaps:
+ [0]:
+ flags:
+ [0]: in-use
+ name: bitmap-1
+ granularity: 32768
+ [1]:
+ flags:
+ [0]: in-use
+ [1]: auto
+ name: bitmap-2
+ granularity: 65536
+ refcount bits: 16
+ corrupt: false
+
+The same bitmaps in JSON format:
+[
+ {
+ "flags": [
+ "in-use"
+ ],
+ "granularity": 32768,
+ "name": "bitmap-1"
+ },
+ {
+ "flags": [
+ "in-use",
+ "auto"
+ ],
+ "granularity": 65536,
+ "name": "bitmap-2"
+ }
+]
+
+Test 5
+{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 16384, "name": "bitmap-0", "node": "drive0", "persistent": true}}
+{"return": {}}
+Write an unknown bitmap flag '0x4' into a new QCOW2 image at offset 327695
+qemu-img: Could not open 'TEST_IMG': Bitmap 'bitmap-0' doesn't satisfy the constraints
+
+Unset the unknown bitmap flag '0x4' in the bitmap directory entry:
+
+image: TEST_IMG
+file format: IMGFMT
+virtual size: 1.0M (1048576 bytes)
+cluster_size: 65536
+Format specific information:
+ compat: 1.1
+ lazy refcounts: false
+ bitmaps:
+ [0]:
+ flags:
+ [0]: auto
+ name: bitmap-0
+ granularity: 16384
+ refcount bits: 16
+ corrupt: false
+
@@ -235,3 +235,4 @@
235 auto quick
236 auto quick
238 auto quick
+242 rw auto quick
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> --- tests/qemu-iotests/242 | 103 ++++++++++++++++++++++++++++ tests/qemu-iotests/242.out | 165 +++++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/group | 1 + 3 files changed, 269 insertions(+) create mode 100755 tests/qemu-iotests/242 create mode 100644 tests/qemu-iotests/242.out