VSS timeout with Exchange 2010

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Re: VSS timeout with Exchange 2010

Veeam Logoby Bunce » Thu Dec 02, 2010 8:28 pm

We've been backup up 2010 RTM for a few months now and no issues (apart from the DAG failover issue reported due to FCS timeouts), so keenly awaiting the XGE Item restore component.. :)
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Re: VSS timeout with Exchange 2010

Veeam Logoby rowdy » Fri Dec 10, 2010 9:26 am

Well, today the backups decided it was a beautiful day and they started going okay again.
Absolutely nothing has changed, besides that we have only more VM's running on the same host now...
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Re: VSS timeout with Exchange 2010

Veeam Logoby ZackAngelo » Tue Jan 11, 2011 2:26 pm

I'm a brand new Veeam customer and I've just run into the same issue. I'm running Exchange 2010 SP1 on Windows Server 2K8 R2. I've just opened a case with support; from the looks of it, it doesn't look like there is much they can do.
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Re: VSS timeout with Exchange 2010

Veeam Logoby c.bocquet » Tue Feb 22, 2011 12:05 pm

Same issue for me: 2008 R2 with Exchange 2010
Resolved by the uninstall of Backup Exec remote Agent and a reboot.

Thanks guys. :D
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Re: VSS timeout with Exchange 2010

Veeam Logoby Bunce » Tue Feb 22, 2011 3:21 pm

What does Backup Exec have to do with this issue?
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Re: VSS timeout with Exchange 2010

Veeam Logoby Gostev » Tue Feb 22, 2011 3:53 pm

BackupExec requires deploying an agent on each guest. This agent also brings custom VSS provider that "brakes" normal VSS operations unless I assume you do some special custom calls that their agent does. Veeam leverages standard VSS API calls, and those are affected. This is known issue, there were a few other topics about this over the course of last couple of years. Uninstall + reboot always helps.

I figured this is Symantec's last revenge to us before they get thrown away ;)
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Re: VSS timeout with Exchange 2010

Veeam Logoby Bunce » Tue Feb 22, 2011 4:01 pm

gotchya. Actually, I do recall seeing some options in the BE GUI where you can choose to use BE's provider or native.
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Re: VSS timeout with Exchange 2010

Veeam Logoby adean » Mon Apr 04, 2011 11:17 pm

I'm having the same issue even though this server has never had any Symantec products installed. No other resolutions? I'm having the same experience as rowdy, same error message, same trouble with the MS Exchange VSS Writer... 2008 R2, Exchange 2010 SP1. My tried-and-true Veeam job was working great until one day, 'poof'. Thanks.
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Re: VSS timeout with Exchange 2010

Veeam Logoby Gostev » Tue Apr 05, 2011 9:42 am

Hi Anne, do these commands show any issues with VSS writers or providers when you run them on your Exchange 2010 box?
Code: Select all
vssadmin list writers
vssadmin list providers
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Re: VSS timeout with Exchange 2010

Veeam Logoby adean » Tue Apr 05, 2011 10:17 am

Yes, same as Rowdy:

Writer name: 'Microsoft Exchange Writer'
Writer Id: {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7}
Writer Instance Id: {8d784b70-e66f-430a-b876-afa4d7b31c0f}
State: [9] Failed
Last error: Timed out

Veeam Support was not able to offer assistance other than suggesting that I contact Microsoft. Thank you in advance for your help!
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Re: VSS timeout with Exchange 2010

Veeam Logoby Gostev » Tue Apr 05, 2011 11:13 am

Yes, in this case you do indeed need to contact Microsoft directly for assistance. We do not possess source code of this VSS writer, nor knowledge of Microsoft Exchange VSS functionality troubleshooting via debug logs, so we are unable to assist here. This is not a finger pointing by any means, please understand that we simply cannot support the code we do not own. Thanks.
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Re: VSS timeout with Exchange 2010

Veeam Logoby adean » Mon Apr 18, 2011 11:09 am

We opened a case with Microsoft and they crawled all over the server insisting there was nothing wrong with VSS.

Several theories and support groups later, it turned out that our VSS issues were caused by low resources on the ESXi being used. Although the host didn’t appear to be fully taxed, apparently it was enough to slow down the response from the Exchange Writer. We migrated the server to a different host and the Veeam backups started working immediately.
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Re: VSS timeout with Exchange 2010

Veeam Logoby Gostev » Mon Apr 18, 2011 11:46 am

Hi Anne, thank you very much for taking time to update this post with the resolution.
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Re: VSS timeout with Exchange 2010

Veeam Logoby 1-0-1 » Fri May 27, 2011 9:31 am

I have the same issue and last avenue is moving the VM onto a unpopulated dedicated host. Just out of interest sake - if I select Microsoft VSS option in my backup job (put a check mark next to 'Enable application image-aware processing') is it safe to assume I can disable/uncheck the 'Enable VMWARE tools quiescene'?
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Re: VSS timeout with Exchange 2010

Veeam Logoby J1mbo » Fri May 27, 2011 9:36 am

Since it appears to be a time-out, I wonder if the underlying storage system is simply unable to complete the freeze in whatever time is allocated? Perhaps it would be helpful to understand the underlying storage in systems that see failures.
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