AppSync: Restore of a Local Unity copy may fail if the pause of the Unity native replication session takes longer than 30 seconds.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Symptoms



The AppSync events will show:
 
2019-04-26 15:29:07.816,Restore copy,xx,UNITY_000047,SRV-appsync,Failed to restore the Unity snapshot AppSyncSnap-20190410_152120:332-287e3583-632b-4947-8ec9-5d0e7571b4b8-VOL_11 with an unexpected response from array uni-local-xxx. Response text: The restore operation cannot be performed because destination of the restore operation is being used by an active sync replication session. Pause the session, and try again. (Error Code:0x716f1011).

The resume may also fail as seen in the AppSync events:
 
2019-04-26 15:29:10.179,Restore copy,xx,UNITY_000086,SRV-appsync,Failed to perform on demand resume operation on replication session with id: xxxxxxx_APM00-LOCAL_0000_yyyyyyyy_APM00-REMOTE_0000

The AppSync Server log will show the request to pause of the Unity native replication session:
 
04-26-2019 15:28:00.488 INFO [Thread-458] [com.emc.archway.restclient.RESTClient] [xxx-appsync] [] c6ceac66-df16-4c49-92f5-9feb710c1a62->>> executeRequest: executing POST: POST https://10.UNITY-IP:443/api/instances/replicationSession/
xxxxxxx_APM00-LOCAL_0000_yyyyyyyy_APM00-REMOTE_0000/action/pause HTTP/1.1 

The Unity EMCSystemLogFile located in a Unity data collect will show when the session became paused in GMT. Notice it took 33 seconds, which is greater than the 30 seconds AppSync allows.
 
"2019-04-26T19:28:33.375Z" "spb" "Neo_CEM" "23121" "N/A" "WARN" "14:60772" :: "Replication session rep_sess_res_3_res_2_APM00-LOCAL_APM00-REMOTE has been paused." :: Category=User Component=Health

Cause

AppSync only allowed for 30 seconds for the Unity native replication session to pause.

Resolution

A hotfix exists for AppSync 3.8.0.0 that extends the time period that AppSync will wait for the Unity native replication session to be paused to 30 minutes, with checks every 20 seconds.

Refer to the release notes post AppSync 3.8.0.0 to determine if the issue is resolved in releases subsequent to AppSync 3.8.0.0.

To obtain the hotfix for AppSync 3.8.0.0 or subsequent releases that do not note this issue as being resolved, open a service request and quote this article.

Affected Products

AppSync

Products

AppSync
Article Properties
Article Number: 000168174
Article Type: Solution
Last Modified: 30 May 2024
Version:  3
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.