When VSTOR2 driver is not available, GRT enabled backup jobs for a virtual machine completes with exception "Failed to mount one or more virtual disk images".

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Article ID: 100027934

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Description

Error Message

The job has a exception in the job log:   Failed to mount one or more virtual disk images.

Debug from beremote on the media server has the following:

[10868] 2012-10-11T11:53:50.152 [mounter]            - VMDKRemoteImage::mountDisks()  Could not open the mount the volume 0. Error Text: 'Driver not found' Error: '24307'
[10868] 2012-10-11T11:53:50.152 [mounter]            - VMDKRemoteImage::mountDisks()  Could not open the mount the volume 1. Error Text: 'Driver not found' Error: '24307'
[6892] 2012-10-11T11:53:50.152 [fsys\shared]        - VDDK-Log: Vmount library: Error 2 while opening VSTOR2 driver's control device
[6892] 2012-10-11T11:53:50.152 [fsys\shared]        - VDDK-Log: Vmount library: Error 2 while opening VSTOR2 driver's control device

Cause

VSTOR2 driver is not available or started on the media server causing the failure in mounting disk images.

Resolution

1. Check for the existence of C:\Windows\system32\DRIVERS\vstor2-mntapi-shared.sys. Where  is 10 or 20.

2. Run MSinfo32 and see under Software Environment | System Drivers if Vstor2 MintApi Driver (Shared) is started and running. Where is 1.0 or 2.0
3. If you find the driver in the Drivers folder, try starting the driver using the following command in the command prompt.

net start vstor2-mntapi10-shared
- or -
net start vstor2-mntapi20-shared

4. If you do not find the driver in the drivers folder or it fails to start, it will have to reinstalled.
5. Browse to  Backup Exec installation directory: \VMware\VixDiskLib\bin\AMD64 and install the driver using vstor2-mntapi-shared.inf
6. Check event viewer for confirmation of the installation and then check MSinfo32 to confirm if the driver is started and running.
7. Run backup job again and confirm if the GRT is available.

 

These steps will have to be confirmed on each server.

1. If you do find the driver and it shows \??\c:\windows.... then follow the link to the vmware site to remove the \??\

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2034124

2. After the \??\ has been removed then restart the server and run a backup job.

 

Issue/Introduction

When VSTOR2 driver is not available, GRT enabled backup jobs for a VMware virtual machine completes with exception "Failed to mount one or more virtual disk images". Debug log indicates 'Driver not found' as below.