Calculating digests Error: Cannot find shadow copy of volume

Backup agent for Microsoft Windows servers and workstations (formerly Veeam Endpoint Backup FREE)

Calculating digests Error: Cannot find shadow copy of volume

Veeam Logoby JardaCZ » Sat Feb 25, 2017 12:26 pm

Dear community,

I installed Veeam Agent for Windows on Small Business Server 2011 (SBS2011). It's a package of Server 2008 R2, Exchange, SharePoint.

When I run backup of system volume, it fails with error:
Calculating digests Error: Cannot find shadow copy of volume System Reserved.

case #02075241

Veeam tech support told me:
[18.02.2017 13:36:11] <32> Warning Key container is corrupt, deleting...
[18.02.2017 13:36:11] <32> Error Keyset does not exist. Error code: -2146893802
[18.02.2017 13:36:11] <32> Error Failed to delete corrupted container
[18.02.2017 13:36:11] <32> Error An exception was thrown from thread [11532].

Could you please perform the following test?

diskshadow
>set verbose on
>set context volatile
>add volume {cbda5276-b84e-11e4-a536-xxxxxxxxxxxxx}
>add volume c:
>begin backup
>create
>end backup



I'm afraid because it's production environment and I don't want to try it.
Someone with same experience?

You can see screenshot of my disk management, shadow copies and Veeam LOG. With my comments...
Image

Regards,
Jarda
JardaCZ
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Re: Calculating digests Error: Cannot find shadow copy of vo

Veeam Logoby JardaCZ » Sat Feb 25, 2017 7:43 pm

I can find this errors in event LOGs:

ID: 190
source: Veeam Agent
type: Error
description:
Veeam Agent 'Backup Job ServerName' finished with Failed.
Job details: Calculating digests Error: Cannot find shadow copy of volume System Reserved
Error: Cannot find shadow copy of volume System Reserved

ID: 2007
source: ESE
type: Error
description:
Information Store (2192) Shadow copy instance 3 aborted.

ID: 9782
source: MSExchangeIS
type: Error
description 1:
Exchange VSS Writer (instance f6ea6f9e-5c4a-4fee-b340-xxxxxxxxxxxx:3) has completed the backup of database 'Mailbox Database' with errors. The backup did not complete successfully, and no log files were truncated for this database.

description 2:
Exchange VSS Writer (instance f6ea6f9e-5c4a-4fee-xxxxxxxxxxxx:3) has completed the backup of database 'Public Folder Database 0968366386' with errors. The backup did not complete successfully, and no log files were truncated for this database.

ID: 8230
source: VSS
type: Warning
description:
Volume Shadow Copy Service error: Failed resolving account spsearch with status 1376. Check connection to domain controller and VssAccessControl registry key.
Error: NetLocalGroupGetMemebers(spsearch), 0x80070560, The specified local group does not exist.
JardaCZ
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Re: Calculating digests Error: Cannot find shadow copy of vo

Veeam Logoby JardaCZ » Sat Feb 25, 2017 8:05 pm

I just googled around this errors.

resolution for ID: 8230 source: VSS
https://social.technet.microsoft.com/Forums/en-US/7c55c3c6-e139-4787-be36-9feb1a351fd1/how-do-i-resolve-event-id-8230-source-vss-with-sbs-2011?forum=smallbusinessserver
https://support.microsoft.com/en-us/help/2537096/you-may-get-vss-warnings-in-the-application-event-log-of-sbs-2011-standard
http://www.eventid.net/display.asp?eventid=8230&eventno=10589&source=VSS&phase=1

It's strange, because Windows Server Backup runs fine.

I did this
•open registry editor and navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\VSS\VssAccessControl
•backup this key, just in case you need to restore it later
•CHANGE the value to 0 for all accounts except the NetworkService account which I left at 1
•close registry editor
•open services.msc and restart Volume Shadow Service
•retry Windows Server Backup (Veeam Backup)

The error ID: 8230 source: VSS disappeared, but Veeam Backup still doesn't work.

remaining errors:
ID: 2007, source: ESE
ID: 9782, source: MSExchangeIS
JardaCZ
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Re: Calculating digests Error: Cannot find shadow copy of vo

Veeam Logoby JardaCZ » Sat Feb 25, 2017 9:47 pm

I also tried with no luck:

vssadmin list writers
all stable, no errors

increase timeout
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SPP
DWORD 32bit: CreateTimeout
VALUE: 1200000


!!! it looks like Exchange VSS provider cannot create snapshot because of heavy I/O load !!!

remaining errors:
ID: 2007, source: ESE
ID: 9782, source: MSExchangeIS
JardaCZ
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Re: Calculating digests Error: Cannot find shadow copy of vo

Veeam Logoby Dima P. » Sun Feb 26, 2017 6:44 pm

Hi JardaCZ,

Thanks for the sharing the investigation details. Sharing this info with QA folks. Will update this thread once I hear anything.
Dima P.
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Full Name: Dmitry Popov

Re: Calculating digests Error: Cannot find shadow copy of vo

Veeam Logoby JardaCZ » Tue Feb 28, 2017 3:34 pm

Hi community,

Veeam support told me:
We have found a bug which is a root cause of the issue the bug will be fixed in the final release.

So I think it's success, thanks to Veeam support.
We all expect final release in the end of March.


Regards,
Jarda
JardaCZ
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Re: Calculating digests Error: Cannot find shadow copy of vo

Veeam Logoby Dima P. » Wed Mar 01, 2017 11:12 am

Hi Jarda,

Thanks for the heads up! Indeed, after checking with QA team we realized this is a known issue and it’s going to be fixed in 2.0 GA.

P.S. GA is planned for the end of Q1, so most likely end of March
Dima P.
Veeam Software
 
Posts: 6121
Liked: 435 times
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Location: SPb
Full Name: Dmitry Popov


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