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matteo.filosa
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Applying retention policy very slow

Post by matteo.filosa » Feb 10, 2014 11:42 am

Hi,
i have six datastore with each one have one replica JOB.
In the first replica JOB i have 3 VM and only in VM3 when arrive to step "Applying Retention policy" the task is very slow, it take about 5 hours!!!
All datastore is in the same HP SAN.

In the email activity i can see this technical information:

Code: Select all

Success		
Start time	20:00:07	
Total size	665,7 GB	
Backup size	48,9 GB	
End time	02:33:48 (+1)	
Data read	273,0 GB		
Duration	6:33:40
Transferred	81,3 GB
Details 
Name	          Status	  Start time 	End time	        Size	          Read	Transferred	Duration	Details
VM1	           Success	20:01:35	   20:56:17	       135,7 GB	      133,7 GB	1,9 GB	     0:54:42 	
VM2	           Success	20:56:22	   21:12:40	       60,0 GB	       4,0 GB	   2,1 GB	    0:16:18 	
VM3              Success	21:12:46	   02:33:39 (+1)     470,0 GB	      135,3 GB	77,3 GB	    5:20:53  


During the first 30 minutes of "Applying Retention Policy" i receive the alarm of Veeam One about disk latency warning and after resolve automatically :shock:
How can i troubleshoot my issue?
Why only in this VM it takes so long time to this step? :(

foggy
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Re: Applying retention policy very slow

Post by foggy » Feb 10, 2014 12:00 pm

Since you're replicating to the same SAN, where original VMs reside, and this VM is the largest one in this job, I would say that disk latency alarms are expected during snapshot commit operation (replica restore points are stored in VMware native format, as snapshots). You could try to reproduce this behavior while deleting snapshot manually via vSphere Client.

matteo.filosa
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Re: Applying retention policy very slow

Post by matteo.filosa » Feb 10, 2014 12:07 pm

Hi Foggy,
thanks for your reply.
the replication destination is in other SAN.
When into vmware the snapshot commit is finished in Veeam Backup Replication still "Applying retention policy" is normal?

foggy
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Re: Applying retention policy very slow

Post by foggy » Feb 10, 2014 1:18 pm

Retention policy is applied at the end of the job for all the replicated VMs. Do you see the "Applying retention policy" operation in job session log still lasting after all the snapshots have been committed? How long does it take after last snapshot has been committed?

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