We are unable to mount the passive copies when the other server which was hosting the active copies are unavailable. There are two mailbox servers in a DAG
1. M1 - hosts all the active copies
2. M2 - passive copies
There was a power failure and M1 went down, but M2 server couldn't mount any of the passive databases it had. When the M1 is up, all the databases are mounted automatically. This is not we expected, when the primary server in the DAG is not available the secondary server which has the copies should be able to mount the databases and provide HA.
Errors:
Name : M2D1\M2
Status : DisconnectedAndResynchronizing
CopyQueueLength : 9223372036854775729
ReplayQueueLength : 1
Name : M2D2\M2
Status : DisconnectedAndResynchronizing
CopyQueueLength : 9223372036854775730
ReplayQueueLength : 1
Name : M1D1\M2
Status : DisconnectedAndResynchronizing
CopyQueueLength : 9223372036854775720
ReplayQueueLength : 1
Name : M1D2\M2
Status : DisconnectedAndResynchronizing
CopyQueueLength : 9223372036854775721
ReplayQueueLength : 1
Event ID:
Log Name: Application
Source: MSExchangeRepl
Date: 4/19/2013 7:33:14 PM
Event ID: 3154
Task Category: Service
Level: Error
Keywords: Classic
User: N/A
Computer: M2.success.com
Description:
Active Manager failed to mount database M1D2 on server M1.success.com. Error: An Active Manager operation failed. Error: The database action failed. Error: An error occurred while trying to select a database copy for possible activation. Error: The database
'M1D2' was not mounted because errors occurred either while validating database copies for possible activation, or while attempting to activate another copy. Detailed error(s):
m1:
Server 'M1.success.com' is not up according to the Windows Failover Cluster service.
m2:
An Active Manager operation failed. Error: The database was not mounted because it has experienced data loss as a result of a switchover or failover, and the attempt to copy the last logs from the source server failed.
Please check the event log for more detailed information. Specific error message: Attempt to copy remaining log files failed for database M1D2\M2. Error: Microsoft.Exchange.Cluster.Replay.AcllUnboundedDatalossDetectedException: Detected stale last log generated
information for database 'M1D2' (LastUpdatedTime(UTC)=2013-04-19T04:12:02, Allowed duration=00:12:00, Actual duration=22:21:12.6453438).
at Microsoft.Exchange.Cluster.Replay.AttemptCopyLastLogs.ProtectUnboundedDataloss()
at Microsoft.Exchange.Cluster.Replay.AttemptCopyLastLogs.UpdateMountAllowedNow(AutoDatabaseMountDial& mountDial, Boolean& mountDialOverrideUsed)
at Microsoft.Exchange.Cluster.Replay.AttemptCopyLastLogs.ComputeLossAndMountAllowed(LocalizedString errorString)
at Microsoft.Exchange.Cluster.Replay.AttemptCopyLastLogs.AttemptCopyLastLogsInternal()
at Microsoft.Exchange.Cluster.Replay.AttemptCopyLastLogs.MakeAttempt(LogCopier logCopier, LogInspector logInspector, LogReplayer logReplayer)
. [Server: M2.success.com]
.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="MSExchangeRepl" />
<EventID Qualifiers="49156">3154</EventID>
<Level>2</Level>
<Task>1</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2013-04-20T02:33:14.000000000Z" />
<EventRecordID>2920</EventRecordID>
<Channel>Application</Channel>
<Computer>M2.success.com</Computer>
<Security />
</System>
<EventData>
<Data>M1D2</Data>
<Data>M1.success.com</Data>
<Data>An Active Manager operation failed. Error: The database action failed. Error: An error occurred while trying to select a database copy for possible activation. Error: The database 'M1D2' was not mounted because errors occurred
either while validating database copies for possible activation, or while attempting to activate another copy. Detailed error(s):
m1:
Server 'M1.success.com' is not up according to the Windows Failover Cluster service.
m2:
An Active Manager operation failed. Error: The database was not mounted because it has experienced data loss as a result of a switchover or failover, and the attempt to copy the last logs from the source server failed.
Please check the event log for more detailed information. Specific error message: Attempt to copy remaining log files failed for database M1D2\M2. Error: Microsoft.Exchange.Cluster.Replay.AcllUnboundedDatalossDetectedException: Detected stale last log generated
information for database 'M1D2' (LastUpdatedTime(UTC)=2013-04-19T04:12:02, Allowed duration=00:12:00, Actual duration=22:21:12.6453438).
at Microsoft.Exchange.Cluster.Replay.AttemptCopyLastLogs.ProtectUnboundedDataloss()
at Microsoft.Exchange.Cluster.Replay.AttemptCopyLastLogs.UpdateMountAllowedNow(AutoDatabaseMountDial& mountDial, Boolean& mountDialOverrideUsed)
at Microsoft.Exchange.Cluster.Replay.AttemptCopyLastLogs.ComputeLossAndMountAllowed(LocalizedString errorString)
at Microsoft.Exchange.Cluster.Replay.AttemptCopyLastLogs.AttemptCopyLastLogsInternal()
at Microsoft.Exchange.Cluster.Replay.AttemptCopyLastLogs.MakeAttempt(LogCopier logCopier, LogInspector logInspector, LogReplayer logReplayer)
. [Server: M2.success.com]
.</Data>
</EventData>
</Event>
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