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iotests: add busy/recording bit test to 124
This adds a simple test that ensures the busy bit works for push backups, as well as doubling as bonus test for incremental backups that get interrupted by EIO errors. Recording bit tests are already handled sufficiently by 236. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Tested-by: Eric Blake <eblake@redhat.com> Message-id: 20190223000614.13894-11-jsnow@redhat.com Signed-off-by: John Snow <jsnow@redhat.com>
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John Snow
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@ -634,6 +634,119 @@ class TestIncrementalBackupBlkdebug(TestIncrementalBackupBase):
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self.vm.shutdown()
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self.check_backups()
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def test_incremental_pause(self):
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"""
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Test an incremental backup that errors into a pause and is resumed.
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"""
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drive0 = self.drives[0]
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# NB: The blkdebug script here looks for a "flush, read, read" pattern.
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# The flush occurs in hmp_io_writes, the first read in device_add, and
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# the last read during the block job.
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result = self.vm.qmp('blockdev-add',
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node_name=drive0['id'],
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driver=drive0['fmt'],
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file={
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'driver': 'blkdebug',
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'image': {
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'driver': 'file',
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'filename': drive0['file']
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},
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'set-state': [{
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'event': 'flush_to_disk',
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'state': 1,
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'new_state': 2
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},{
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'event': 'read_aio',
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'state': 2,
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'new_state': 3
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}],
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'inject-error': [{
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'event': 'read_aio',
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'errno': 5,
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'state': 3,
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'immediately': False,
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'once': True
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}],
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})
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self.assert_qmp(result, 'return', {})
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self.create_anchor_backup(drive0)
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bitmap = self.add_bitmap('bitmap0', drive0)
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# Emulate guest activity
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self.hmp_io_writes(drive0['id'], (('0xab', 0, 512),
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('0xfe', '16M', '256k'),
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('0x64', '32736k', '64k')))
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# For the purposes of query-block visibility of bitmaps, add a drive
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# frontend after we've written data; otherwise we can't use hmp-io
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result = self.vm.qmp("device_add",
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id="device0",
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drive=drive0['id'],
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driver="virtio-blk")
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self.assert_qmp(result, 'return', {})
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# Bitmap Status Check
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query = self.vm.qmp('query-block')
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ret = [bmap for bmap in query['return'][0]['dirty-bitmaps']
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if bmap.get('name') == bitmap.name][0]
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self.assert_qmp(ret, 'count', 458752)
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self.assert_qmp(ret, 'granularity', 65536)
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self.assert_qmp(ret, 'status', 'active')
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self.assert_qmp(ret, 'busy', False)
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self.assert_qmp(ret, 'recording', True)
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# Start backup
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parent, _ = bitmap.last_target()
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target = self.prepare_backup(bitmap, parent)
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res = self.vm.qmp('drive-backup',
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job_id=bitmap.drive['id'],
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device=bitmap.drive['id'],
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sync='incremental',
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bitmap=bitmap.name,
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format=bitmap.drive['fmt'],
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target=target,
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mode='existing',
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on_source_error='stop')
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self.assert_qmp(res, 'return', {})
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# Wait for the error
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event = self.vm.event_wait(name="BLOCK_JOB_ERROR",
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match={"data":{"device":bitmap.drive['id']}})
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self.assert_qmp(event, 'data', {'device': bitmap.drive['id'],
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'action': 'stop',
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'operation': 'read'})
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# Bitmap Status Check
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query = self.vm.qmp('query-block')
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ret = [bmap for bmap in query['return'][0]['dirty-bitmaps']
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if bmap.get('name') == bitmap.name][0]
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self.assert_qmp(ret, 'count', 458752)
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self.assert_qmp(ret, 'granularity', 65536)
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self.assert_qmp(ret, 'status', 'frozen')
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self.assert_qmp(ret, 'busy', True)
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self.assert_qmp(ret, 'recording', True)
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# Resume and check incremental backup for consistency
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res = self.vm.qmp('block-job-resume', device=bitmap.drive['id'])
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self.assert_qmp(res, 'return', {})
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self.wait_qmp_backup(bitmap.drive['id'])
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# Bitmap Status Check
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query = self.vm.qmp('query-block')
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ret = [bmap for bmap in query['return'][0]['dirty-bitmaps']
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if bmap.get('name') == bitmap.name][0]
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self.assert_qmp(ret, 'count', 0)
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self.assert_qmp(ret, 'granularity', 65536)
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self.assert_qmp(ret, 'status', 'active')
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self.assert_qmp(ret, 'busy', False)
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self.assert_qmp(ret, 'recording', True)
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# Finalize / Cleanup
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self.make_reference_backup(bitmap)
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self.vm.shutdown()
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self.check_backups()
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if __name__ == '__main__':
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iotests.main(supported_fmts=['qcow2'])
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@ -1,5 +1,5 @@
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...........
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............
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----------------------------------------------------------------------
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Ran 11 tests
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Ran 12 tests
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OK
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