jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
iotests: test bitmap moving inside 254
Test persistent bitmap copying with and without removal of original
bitmap.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 20190708220502.12977-4-jsnow@redhat.com
[Edited comment "bitmap1" --> "bitmap2" as per review. --js]
Signed-off-by: John Snow <jsnow@redhat.com>
authored by
Vladimir Sementsov-Ogievskiy
and committed by
John Snow
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tests/qemu-iotests/254
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tests/qemu-iotests/254
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#!/usr/bin/env python
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#
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# Test external snapshot with bitmap copying.
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# Test external snapshot with bitmap copying and moving.
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#
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# Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved.
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#
···
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vm.launch()
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vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0')
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vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap1',
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persistent=True)
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vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap2',
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persistent=True)
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vm.hmp_qemu_io('drive0', 'write 0 512K')
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···
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{'type': 'blockdev-snapshot-sync',
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'data': {'device': 'drive0', 'snapshot-file': top,
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'snapshot-node-name': 'snap'}},
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# copy non-persistent bitmap0
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{'type': 'block-dirty-bitmap-add',
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'data': {'node': 'snap', 'name': 'bitmap0'}},
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{'type': 'block-dirty-bitmap-merge',
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'data': {'node': 'snap', 'target': 'bitmap0',
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'bitmaps': [{'node': 'base', 'name': 'bitmap0'}]}}
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'bitmaps': [{'node': 'base', 'name': 'bitmap0'}]}},
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# copy persistent bitmap1, original will be saved to base image
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{'type': 'block-dirty-bitmap-add',
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'data': {'node': 'snap', 'name': 'bitmap1', 'persistent': True}},
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{'type': 'block-dirty-bitmap-merge',
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'data': {'node': 'snap', 'target': 'bitmap1',
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'bitmaps': [{'node': 'base', 'name': 'bitmap1'}]}},
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# move persistent bitmap2, original will be removed and not saved
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# to base image
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{'type': 'block-dirty-bitmap-add',
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'data': {'node': 'snap', 'name': 'bitmap2', 'persistent': True}},
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{'type': 'block-dirty-bitmap-merge',
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'data': {'node': 'snap', 'target': 'bitmap2',
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'bitmaps': [{'node': 'base', 'name': 'bitmap2'}]}},
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{'type': 'block-dirty-bitmap-remove',
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'data': {'node': 'base', 'name': 'bitmap2'}}
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], filters=[iotests.filter_qmp_testfiles])
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result = vm.qmp('query-block')['return'][0]
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log("query-block: device = {}, node-name = {}, dirty-bitmaps:".format(
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result['device'], result['inserted']['node-name']))
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log(result['dirty-bitmaps'], indent=2)
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log("\nbitmaps in backing image:")
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log(result['inserted']['image']['backing-image']['format-specific'] \
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['data']['bitmaps'], indent=2)
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vm.shutdown()
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tests/qemu-iotests/254.out
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tests/qemu-iotests/254.out
···
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{"execute": "block-dirty-bitmap-add", "arguments": {"name": "bitmap0", "node": "drive0"}}
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{"return": {}}
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{"execute": "block-dirty-bitmap-add", "arguments": {"name": "bitmap1", "node": "drive0", "persistent": true}}
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{"return": {}}
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{"execute": "block-dirty-bitmap-add", "arguments": {"name": "bitmap2", "node": "drive0", "persistent": true}}
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{"return": {}}
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{
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"execute": "transaction",
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"arguments": {
···
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"target": "bitmap0"
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},
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"type": "block-dirty-bitmap-merge"
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},
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{
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"data": {
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"name": "bitmap1",
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"node": "snap",
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"persistent": true
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},
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"type": "block-dirty-bitmap-add"
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},
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{
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"data": {
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"bitmaps": [
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{
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"name": "bitmap1",
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"node": "base"
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}
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],
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"node": "snap",
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"target": "bitmap1"
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},
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"type": "block-dirty-bitmap-merge"
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},
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{
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"data": {
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"name": "bitmap2",
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"node": "snap",
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"persistent": true
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},
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"type": "block-dirty-bitmap-add"
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},
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{
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"data": {
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"bitmaps": [
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{
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"name": "bitmap2",
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"node": "base"
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}
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],
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"node": "snap",
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"target": "bitmap2"
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},
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"type": "block-dirty-bitmap-merge"
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},
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{
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"data": {
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"name": "bitmap2",
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"node": "base"
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},
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"type": "block-dirty-bitmap-remove"
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}
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]
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}
···
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"busy": false,
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"count": 524288,
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"granularity": 65536,
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"name": "bitmap2",
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"persistent": true,
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"recording": true,
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"status": "active"
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},
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{
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"busy": false,
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"count": 524288,
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"granularity": 65536,
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"name": "bitmap1",
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"persistent": true,
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"recording": true,
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"status": "active"
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},
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{
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"busy": false,
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"count": 524288,
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"granularity": 65536,
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"name": "bitmap0",
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"persistent": false,
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"recording": true,
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"status": "active"
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}
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]
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bitmaps in backing image:
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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": "bitmap1"
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}
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]