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Re: [Qemu-devel] [PATCH v13 3/3] qcow2: list of bitmaps new test 242
From: |
Andrey Shinkevich |
Subject: |
Re: [Qemu-devel] [PATCH v13 3/3] qcow2: list of bitmaps new test 242 |
Date: |
Wed, 6 Feb 2019 11:58:18 +0000 |
On 06/02/2019 13:23, Andrey Shinkevich wrote:
> 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 <address@hidden>
> Reviewed-by: Eric Blake <address@hidden>
> Reviewed-by: Vladimir Sementsov-Ogievskiy <address@hidden>
> ---
> tests/qemu-iotests/242 | 99 +++++++++++++++++++++++++++
> tests/qemu-iotests/242.out | 167
> +++++++++++++++++++++++++++++++++++++++++++++
> tests/qemu-iotests/group | 1 +
> 3 files changed, 267 insertions(+)
> create mode 100755 tests/qemu-iotests/242
> create mode 100644 tests/qemu-iotests/242.out
>
> diff --git a/tests/qemu-iotests/242 b/tests/qemu-iotests/242
> new file mode 100755
> index 0000000..fbd1b35
> --- /dev/null
> +++ b/tests/qemu-iotests/242
> @@ -0,0 +1,99 @@
> +#!/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 = 0x10002f
> +
> +
> +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 = 2**(13 + bitmap_number)
I wish I wrote:
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 {}\nWrite bitmap flag \'{}\' into the QCOW2 image at offset {}'
> + .format(num, 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)
> diff --git a/tests/qemu-iotests/242.out b/tests/qemu-iotests/242.out
> new file mode 100644
> index 0000000..cf2b310
> --- /dev/null
> +++ b/tests/qemu-iotests/242.out
> @@ -0,0 +1,167 @@
> +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
> +Write bitmap flag '0x4' into the QCOW2 image at offset 1048623
> +qemu-img: Could not open 'TEST_IMG': Bitmap 'bitmap-2' 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:
> + name: bitmap-1
> + granularity: 32768
> + [1]:
> + flags:
> + [0]: auto
> + name: bitmap-2
> + granularity: 65536
> + refcount bits: 16
> + corrupt: false
> +
> diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
> index 0f1c3f9..32acdd7 100644
> --- a/tests/qemu-iotests/group
> +++ b/tests/qemu-iotests/group
> @@ -235,3 +235,4 @@
> 235 auto quick
> 236 auto quick
> 238 auto quick
> +242 rw auto quick
>
--
With the best regards,
Andrey Shinkevich