0xe0009741 - Failed to mount one or more virtual disk images. Restores that use Granular Recovery Technology may not be available from this backup set.

Article:TECH193432  |  Created: 2012-07-23  |  Updated: 2012-07-24  |  Article URL http://www.symantec.com/docs/TECH193432
Article Type
Technical Solution

Product(s)

Issue



As a result of a restore from a Differential of Incremental backup set located in a deduplication folder the following error shows up.

0xe0009741 - Failed to mount one or more virtual disk images. Restores that use Granular Recovery Technology may not be available from this backup set.

 

Restores from  Full backup sets located in the deduplication folder are not affected by this issue

 


Error



In the failed job log

 

0xe0009741 - Failed to mount one or more virtual disk images. Restores that use Granular Recovery Technology may not be available from this backup set.

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It is very likely that the following PDVFS error will appear in the "Application " hive of the Media server even viewer.

EVENT ID: 50000
Source: PDVFS

Description1: An error occurred in the PDVFS driver:VmdkFilter::RealToLogicalOffset: Fatal error converting real offset to logical - offset not found in Grain Table!
Description2: An error occurred in the PDVFS driver: VMDKFilter: VMDK name  0.000000ound in NameDataMap, but creation of .hdr file failed! - write mode, res=5

This error is detailed in technote TECH161451.
 

 

 


Environment



 

 


Solution



Workarounds:

1) Restore from a "Full" backup set located in the deduplication folder.

2) Disable the AVVI Deduplication Stream Handler using the following procedure:

 

 

Note: Disabling the AVVI Deduplication Stream Handler will result in lower deduplication rates for AVVI backups performed on this media server.  It is recommended to subscribe to this technote in order to get a notification when this issues has been resolved.  After that point, it is recommended to delete this registry key to re-enable the AVVI Deduplication Stream Handler.

Procedure

-Using regedit, create the  HKEY_LOCAL_MACHINE\Software\Symantec\Backup Exec For Windows\Backup Exec\Engine\VMware Agent registry key.
Then, create a DWORD value in this key named "Disable NTFS File Extent Mapping" and give it a value of 1.
 
Note: Incorrect use of the Windows Registry Editor can have disastrous results on a server Operating System. Great care should be taken when making changes to a Windows Registry. Registry modifications should only be carried-out by persons experienced in the use of the Registry Editor application.

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Symantec Corporation has acknowledged that the above-mentioned issue is present in the current version(s) of the product(s) mentioned at the end of this article. Symantec Corporation is committed to product quality and satisfied customers.
 
This issue is currently under investigation by Symantec Corporation. Pending the outcome of the investigation, this issue may be resolved by way of a patch or hotfix in current or future revisions of the software. However, this particular issue is not currently scheduled for any release.  If you feel this issue has a direct business impact for you and your continued use of the product, please contact your Symantec Sales representative or the Symantec Sales group to discuss these concerns.  For information on how to contact Symantec Sales, please see  http://www.symantec.com Please be sure to refer back to this document periodically as any changes to the status of the issue will be reflected here.
 

NOTE:
Customers experiencing this issue are encouraged to contact Symantec Technical Support as data is still being collected to assist in resolving this issue.


 

 

 


Supplemental Materials

SourceETrack
Value2864185
Description

0xe0009741 - Failed to mount one or more virtual disk images. Restores that use Granular Recovery Technology may not be available from this backup set. when restoring from a deduplication



Article URL http://www.symantec.com/docs/TECH193432


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