アップグレードまたはノードのシャットダウン時以外では、 Snapshot 、ボリュームの作成 / 削除が失敗します

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環境

SolidFire 用の OpenStack Cinder ドライバ
Element ソフトウェア

問題

SolidFire ストレージシステムから API 呼び出し応答として返される次の例外のいずれかで、 Snapshot またはボリュームの作成 / 削除が失敗します。

xNotPrimary
xDBOperationTimeout
xDBConnectionLoss
xNoHandler
xSnapshotFailed
xRecvTimeout
xDBNoSuchPath
xPermissionDenied

エラーメッセージの例 cinder.log ：

2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server [req-75f94287-50a6-4f39-aeca-62b5aa94a6c8 e0bdb7eb798846e794e9a124f30e5542 98f1d3382f234278a90053c0aa081600 - 562bfa8e1b904076931ebdf1dfdcd3fa 562bfa8e1b904076931ebdf1dfdcd3fa] Exception during message handling: SolidFireAPIException: API response: {u'id': None, u'error': {u'message': u'DBClient connection lost during operation at [/accounts/492]', u'code': 500, u'name': u'xDBConnectionLoss'}} 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server Traceback (most recent call last): 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 166, in _process_incoming 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server res = self.dispatcher.dispatch(message) 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 220, in dispatch 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server return self._do_dispatch(endpoint, method, ctxt, args) 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 190, in _do_dispatch 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server result = func(ctxt, **new_args) 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "<string>", line 2, in delete_snapshot 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/cinder/coordination.py", line 151, in _synchronized 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server return f(*a, **k) 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/cinder/volume/manager.py", line 1163, in delete_snapshot 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server snapshot.save() 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__ 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server self.force_reraise() 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server six.reraise(self.type_, self.value, self.tb) 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/cinder/volume/manager.py", line 1153, in delete_snapshot 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server self.driver.delete_snapshot(snapshot) 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/solidfire.py", line 1557, in delete_snapshot 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server accounts = self._get_sfaccounts_for_tenant(snapshot['project_id']) 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/solidfire.py", line 1081, in _get_sfaccounts_for_tenant 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server 'ListAccounts', {})['result']['accounts'] 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/solidfire.py", line 118, in func_retry 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server return f(*args, **kwargs) 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/cinder/volume/drivers/solidfire.py", line 529, in _issue_api_request 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server raise exception.SolidFireAPIException(msg) 2021-05-28 06:04:00.235 38 ERROR oslo_messaging.rpc.server SolidFireAPIException: API response: {u'id': None, u'error': {u'message': u'DBClient connection lost during operation at [/accounts/492]', u'code': 500, u'name': u'xDBConnectionLoss'}}