Moving Backups To DataDomain Boost

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Re: Moving Backups To DataDomain Boost

Veeam Logoby b.vanhaastrecht » Sun Nov 30, 2014 12:43 pm

Running version 5.5.0.8-456696 here. Thruput is ok, but the processing of jobs is very slow. Every step in Veeam takes very long to process.
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Re: Moving Backups To DataDomain Boost

Veeam Logoby NightBird » Sun Nov 30, 2014 4:33 pm

With Backup copy job (with GFS set), each time a merge full backup run (for retention policy), the merge task stuck to 99% a while.

Normally the first created .vib merge in the .vbk to respect retention rules, this is fine, but at 99% Veeam create also a compact .vbk (compact should not run as GFS is set)

I see this after mounting the DDboost mtree with CIFS while the merge task stuck

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Re: Moving Backups To DataDomain Boost

Veeam Logoby vStorage » Sun Nov 30, 2014 9:10 pm

It seems that the only reliable way to get backups from Veeam 8 to DD boost enabled DataDomains at this point involves active fulls (or switching to CIFS for incremental runs)

Incremental and synthetic full are extremely inconsistent in performance, often stalling completely for hours at a time and taking 4-5 times longer than an active full.

The inconsistency is that sometimes incremental works fine performance wise with no change in job configuration, number of VMs or data change rate/amount of data transferred
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Re: Moving Backups To DataDomain Boost

Veeam Logoby carlingtech » Mon Dec 01, 2014 12:06 am

R&D provided an updated .dll file that fixed the Veeam -> DataDomain issue for me, at least for incremental backups. I'm still having an issue with Synthetic fulls running for hours with no visible work being done. I have passed those logs into my case, so hopefully they'll find something else that needs attention.

You should open a case as I know they're working on testing the hotfix to resolve the incremental backup issue.
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Re: Moving Backups To DataDomain Boost

Veeam Logoby vStorage » Mon Dec 01, 2014 12:51 am

Thanks - already onto a case, will see what happens
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Re: Moving Backups To DataDomain Boost

Veeam Logoby vStorage » Mon Dec 01, 2014 7:06 am

NightBird wrote:Did you try the private fix from Veeam ? (39801) ?


Just got access to this patch

Does not work. Veeam Backup now fails to connect to DD boost repositories at all, just hangs the management GUI hard
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Re: Moving Backups To DataDomain Boost

Veeam Logoby carlingtech » Mon Dec 01, 2014 8:55 pm

I applied the 39801 hotfix earlier today. My DD repos still work, backups still function. Have not yet tested a synthetic full.

Remember this hotfix has to be applied to all proxies.
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Re: Moving Backups To DataDomain Boost

Veeam Logoby vStorage » Mon Dec 01, 2014 10:43 pm

It did get applied to all

I had to revert patch on Backup/mgmt server restart services and then do it again. Then it could see the repositories. Strange
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Re: Moving Backups To DataDomain Boost

Veeam Logoby b.vanhaastrecht » Tue Dec 02, 2014 8:25 am

Are the slow processing problems solved after installing 39801 hotfix?
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Re: Moving Backups To DataDomain Boost

Veeam Logoby b.vanhaastrecht » Tue Dec 02, 2014 11:26 am

b.vanhaastrecht wrote:Are the slow processing problems solved after installing 39801 hotfix?

To anwser my own question: We've applied the hotfix, but it did solve the problem in our situation. Ticket 00692321.

Image

Edit: new image.
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Re: Moving Backups To DataDomain Boost

Veeam Logoby CHRISATTWOOD » Tue Dec 02, 2014 11:48 am

Im still waiting for EMC to update me on this... its so frustrating.. as this was the update I was most looking forward to using!!

:(
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Re: Moving Backups To DataDomain Boost

Veeam Logoby NightBird » Tue Dec 02, 2014 6:54 pm

I insist but someone at Veeam could explain why with ddboost the full backup merge create each time a compact file at the end of the merging process

Image

You can see that at 19:37 the merging of the .vib in the .Vbk was finished and Veeam start to create a compact full at 99% from the merging process
At the end of the compact file creation Veeam replace the .vbk from 19:37 by the compact.vbk, strange behavior !


Veeam bug ? by ddboost design ?

Thx for prompt reply ;)
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Re: Moving Backups To DataDomain Boost

Veeam Logoby Gostev » Wed Dec 03, 2014 12:45 am

@Nightbird by design. This is how DDBoost-accelerated transforms are performed (new VBK is synthesized by referencing existing data already on the storage).

b.vanhaastrecht wrote:
b.vanhaastrecht wrote:Are the slow processing problems solved after installing 39801 hotfix?

To anwser my own question: We've applied the hotfix, but it did solve the problem in our situation. Ticket 00692321.
Image

This issue is documented in the Known Issues sticky forum post. It is not specific to Data Domain storage and requires 38623 hot fix. Thanks!
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Re: Moving Backups To DataDomain Boost

Veeam Logoby NightBird » Wed Dec 03, 2014 7:59 am

Gostev wrote:@Nightbird by design. This is how DDBoost-accelerated transforms are performed (new VBK is synthesized by referencing existing data already on the storage).


Why do a transform as the main .vbk file was already touch (for retention policy ?) as the can see with the file timestamp ?

For transform full weekly, monthly and so on I can understand, but here ??? create a compact.vbk to replace the main .vbk that was touch some minutes ago... time consuming and quite silly, don't you think so ?

This imply that a simple merge full for rentention policy (first .vib merge in the .vbk) is slower to make with ddboost that with cifs... missing something !
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Re: Moving Backups To DataDomain Boost

Veeam Logoby Gostev » Wed Dec 03, 2014 2:53 pm

I don't understand what you are saying here, I'm sorry. Also, if whatever you are talking about is unrelated to the main topic of this discussion, then let's not derail it and instead create the new one.
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