Commit 403bb818 authored by Vladimir Sementsov-Ogievskiy's avatar Vladimir Sementsov-Ogievskiy Committed by John Snow
Browse files

iotests: test external snapshot with bitmap copying



This test shows that external snapshots and incremental backups are
friends.

Signed-off-by: default avatarVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: default avatarJohn Snow <jsnow@redhat.com>
Message-id: 20190517152111.206494-3-vsementsov@virtuozzo.com
Signed-off-by: default avatarJohn Snow <jsnow@redhat.com>
parent eff0829b
Loading
Loading
Loading
Loading

tests/qemu-iotests/254

0 → 100755
+52 −0
Original line number Diff line number Diff line
#!/usr/bin/env python
#
# Test external snapshot with bitmap copying.
#
# Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved.
#
# 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
from iotests import qemu_img_create, file_path, log

disk, top = file_path('disk', 'top')
size = 1024 * 1024

qemu_img_create('-f', iotests.imgfmt, disk, str(size))

vm = iotests.VM().add_drive(disk, opts='node-name=base')
vm.launch()

vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0')

vm.hmp_qemu_io('drive0', 'write 0 512K')

vm.qmp_log('transaction', indent=2, actions=[
    {'type': 'blockdev-snapshot-sync',
     'data': {'device': 'drive0', 'snapshot-file': top,
              'snapshot-node-name': 'snap'}},
    {'type': 'block-dirty-bitmap-add',
     'data': {'node': 'snap', 'name': 'bitmap0'}},
    {'type': 'block-dirty-bitmap-merge',
     'data': {'node': 'snap', 'target': 'bitmap0',
              'bitmaps': [{'node': 'base', 'name': 'bitmap0'}]}}
], filters=[iotests.filter_qmp_testfiles])

result = vm.qmp('query-block')['return'][0]
log("query-block: device = {}, node-name = {}, dirty-bitmaps:".format(
    result['device'], result['inserted']['node-name']))
log(result['dirty-bitmaps'], indent=2)

vm.shutdown()
+52 −0
Original line number Diff line number Diff line
{"execute": "block-dirty-bitmap-add", "arguments": {"name": "bitmap0", "node": "drive0"}}
{"return": {}}
{
  "execute": "transaction",
  "arguments": {
    "actions": [
      {
        "data": {
          "device": "drive0",
          "snapshot-file": "TEST_DIR/PID-top",
          "snapshot-node-name": "snap"
        },
        "type": "blockdev-snapshot-sync"
      },
      {
        "data": {
          "name": "bitmap0",
          "node": "snap"
        },
        "type": "block-dirty-bitmap-add"
      },
      {
        "data": {
          "bitmaps": [
            {
              "name": "bitmap0",
              "node": "base"
            }
          ],
          "node": "snap",
          "target": "bitmap0"
        },
        "type": "block-dirty-bitmap-merge"
      }
    ]
  }
}
{
  "return": {}
}
query-block: device = drive0, node-name = snap, dirty-bitmaps:
[
  {
    "busy": false,
    "count": 524288,
    "granularity": 65536,
    "name": "bitmap0",
    "persistent": false,
    "recording": true,
    "status": "active"
  }
]
+1 −0
Original line number Diff line number Diff line
@@ -264,3 +264,4 @@
249 rw auto quick
252 rw auto backing quick
253 rw auto quick
254 rw auto backing quick