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Backup of a virtual machine using the Agent for VMware Virtual Infrastructure (AVVI) completes with the following exception when GRT is enabled: "V-79-57344-38721- Failed to mount one or more virtual disk images"

Created: 31 Oct 2012 • Updated: 01 Nov 2012 | 8 comments
This issue has been solved. See solution.

hi all,

BE 2012

i'm backing up via vCenter 5 VM's for 4 of them i'm getting the error message Backup of a virtual machine using the Agent for VMware Virtual Infrastructure (AVVI) completes with the following exception when GRT is enabled: "V-79-57344-38721- Failed to mount one or more virtual disk images"

 

 

found a TECHNOTE  that this should be solved with HOTFIX 180964 but it's allready installed and all Remote Agent's are updated.

 

what's strange the one server where it's working I'm able to run GRT restore's and the server has a VM icon all 4 where the exceptions is being displayed are with an windows server icon and no restore possible as it's in never backed up status, but I'm able to restore the whole .vmdk for all of 5 servers.

 

any ideas guys ?

 

 

 

thank you

Comments 8 CommentsJump to latest comment

VJware's picture

Do the VMs have the remote agent installed in them ? And "never backed up" status is expected for such VMs as backup via the remote agent was not made, but rather made via the virtual agent...

Have you tried an actual restore ?

 

Lilee's picture

yes they do have the RA installed, i know from another ustomer i have that when backingup via vCenter and AVVI agent you are backing up the whole .vmdk file so the .vmdk is only available for restore when restoring from vCenter but all the VM's on the ESX are marked as a Virtual Machine in BE, an here only one the other's are displayed with a windows icon, allready re-added them again an still same

VJware's picture

What happens when you attempt an actual restore job ?

Lastly, remove the remote agent from the VMs, reboot & remove these machines from the Backup Exec UI... Reinstall the remote agent & add them back to BE...

Jaydeep S's picture

1. Could you try to backup these 4 VMs directly from the ESX host than from the VCenter.

2. Does any of these hosts have a RDM, GPT or Dynamic disk.

3. Is there any unformatted disk attached to these VMs

4. Does these VMs have Applications like Exchange and SQL. Make sure that you have the Database and Applications license installed on the Media Server.

5. It would help if you could either include the job log in the pst or PM it to me.

Lilee's picture
 
yes, 4 of 5 VM's have one MBR a one GPT disk, and in fact found in SCL for BE 2012:
 
GRT -- VMDK Support only, No File/Application GRT
 
 
but does the one GPT disk affects the whole files system, can't see restore selection even for the C:\ drive
 
 
thank you
 
 

 

Jaydeep S's picture

Yes, it does cause the GRT to fail. BE performs a backup of the whole VM (vmdks) and then attempts to create the GRT catalog for that VM. During this process, even if you have a single unsupported disk, the process fails and you would not be able to get GRT for the whole machine.

I believe GPT with 2012 you can still perform a non GRt backup of such machines with GPT disks and that should work. Maybe this can be a workaround till you get the supported disks in place and perform a GRT enabled backup. Alternatively, you could perform a traditional RAWS backup of such machines, this as always works.

SOLUTION
Jaydeep S's picture

Only Dynamic MBR disk is supported with Be 2012.

Also, only Virtual Compatibility mode RDM is supported for backups but incase of restore, BE can only perform a redirected restore of Virtual Compatibility mode RDM or the file data.

This again has been explained on page 34/35 of the Software compatibility List http://www.symantec.com/docs/TECH175581