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SMVI VSS Error

We're using Netapp Virtual Storage Console 2.0 to create backups of virtual machines (vSphere 4.1, ESXi 4.1 hosts).  Everything is working fine other than for one VM which is a Domain Controller (Windows 2008 R2, VMWare tools is installed).

When the VSC / SMVI backup is taken, we get the error in VMWare "Cannot create a quiesced snapshot because the create snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine"

Interestingly enough, if I create a snapshot in vSphere manually, I do not get an error.

In Windows - I get a few events logged at the time of the snapshot attempt;

Application Log Event ID: 482, Source: ESENT, Type: Error

lsass (480) An attempt to write to the file "\\?\Volume{c85ad070-d2c3-11df-80e1-005056830007}\Windows\NTDS\edb.log" at offset 7145472 (0x00000000006d0800) for 512 (0x00000200) bytes failed after 0 seconds with system error 19 (0x00000013): "The media is write protected. ". The write operation will fail with error -1032 (0xfffffbf8). If this error persists then the file may be damaged and may need to be restored from a previous backup.

Application Log Event ID: 408. Source: ESENT, Type: Error

lsass (480) Unable to write to logfile \\?\Volume{c85ad070-d2c3-11df-80e1-005056830007}\Windows\NTDS\edb.log. Error -1032 (0xfffffbf8).

Application Log Event ID: 8229, Source: VSS, Type: Warning

A VSS writer has rejected an event with error 0x800423f4, The writer experienced a non-transient error. If the backup process is retried,

the error is likely to reoccur.

. Changes that the writer made to the writer components while handling the event will not be available to the requester. Check the event log for related events from the application hosting the VSS writer.

Operation:

PostSnapshot Event

Context:

Execution Context: Writer

Writer Class Id: {b2014c9e-8711-4c5c-a5a9-3cf384484757}

Writer Name: NTDS

Writer Instance ID: {1e9eb060-32e2-4931-8935-477950a5b121}

Command Line: C:\Windows\system32\lsass.exe

Process ID: 480

I would appreciate any insight to this - many thanks

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Mark Lomas

Re: SMVI VSS Error

Hi

This is how we take a quiesced VMware snapshot. Could you check if this works?

https://now.netapp.com/Knowledgebase/solutionarea.asp?id=kb55068

Usually frozen snapshots is an issue if VMware tools are not installed or if the VM is not aligned.

REgards

Amrita

Re: SMVI VSS Error

This triggers the error yes.  Oddly it does not trigger if I tick the box to snapshot the virtual machine's memory.

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Mark Lomas

Re: SMVI VSS Error

I thought that SMVI did not yet support quiesced snapshots (application consistent) in Windows 2008

http://media.netapp.com/documents/tr-3737.pdf

page 30

Re: SMVI VSS Error

Well - I'm using SMVI as integrated with VSC 2.0 - not sure if that's different to the standalone SMVI

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Mark Lomas

Re: SMVI VSS Error

don't know.

The issue with quiesced snapshots should be solved in vSphere 4.1.

But could find anything on NetApp confirming this.

Re: SMVI VSS Error

Yeah, we're on 4.1 with ESXi hosts, and that's how the VMs started life, with the 'latest' version of VMWare tools installed.

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Mark Lomas

Re: SMVI VSS Error

Re: SMVI VSS Error

Our Virtual Machines (including the affected one) were all created on 4.1 - so the option variable mentioned in that blog is already set to 'true'.

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Mark Lomas

Re: SMVI VSS Error

no raw device mapping or software iscsi initiators etcetera right?