Dell Unity: The pause operation cannot be performed while Replication is in manual sync. (User Correctable)
Summary: This article describes considerations for when manual replication synchronization is in progress and replication has a need to be paused.
Symptoms
The following warning appears when we run the Pre Upgrade Health Check.
One or more asynchronous replication sessions, or one or more NAS Server or file system synchronous replication sessions, exist.
This could cause problems during the upgrade.
Pause the replication sessions on the production array prior to starting the upgrade and resume them after completing the upgrade.
[Warning Code: platform::check_replication_health_4]
- To address the Warning, it is necessary to Pause the Replication, but the button is disabled and cannot be performed.
* In this case, it is not possible to pause even when using the uemcli command.
- Replication is set to manual, and it is in manual syncing.
uemcli /prot/rep/session show
ID = 42949672965_CKM00xxxxxxxxx_0000_42949672968_CKM00yyyyyyyyy_0000
Name = rep_sess_sv_1_sv_1_CKM00xxxxxxxxx_CKM00yyyyyyyyy
Session type = lun
Synchronization type = manual <<<
RPO =
Sync State = manual syncing <<<
Health state = OK (5)
Operational status = Manual Syncing (0x8402)
Time of last sync = yyyy-mm-dd hh:mm:ss
Sync status = 1% Complete, about xxxxx minutes remaining
Element pairs = N/A
- If you press the [retry] button in the precheck during Upgrade, the Upgrade proceeds. (However, we do not recommend it.)
Cause
Therefore, it has the same priority as other user command operations like Pause and Failover/Failback.
Hence when manual sync is running, Pause or Failover/Failback cannot be run as they must wait for the manual sync to be done.