Backup of VMware virtual machine to Deduplication storage folder completes with failed to mount one or more images


The backup of a VMware virtual machine using the Agent for VMware Virtual Infrastructure (AVVI) to deduplication storage folder completes with the exception below when Granular Recovery Technology (GRT) is enabled.

Error Message

Failed to mount one or more virtual disk images.

Remote Agent debug log will show the following errors:
[fsys\shared]        - VDDK-Warn: VixDiskLibProvider::NameBasedProvider::Get: Unable to open disk [datastore] VMDK/VMDK1.vmdk, openflags = 4 - VixError 0x1.
[fsys\shared]        - VDDK-Warn: DiskLibProvider_GetDisk: Open failed - index 0.
[fsys\shared]        - VDDK-Log: Error 2 opening disk 0.
[fsys\shared]        - VDDK-Log: VixMntapi: Operation failed with system error: The system cannot find the file specified. (2), translated to 4
[fsys\shared]        - Calling the vixdiskLib api: VixDiskLib_GetErrorText()
[fsys\shared]        - Calling the vixdiskLib api: VixDiskLib_FreeErrorText()
[mounter]            - VMDKRemoteImage::mountDisks()  Could not open the diskset. Error Text: 'A file was not found' Error: '4'
[engidrapi]          - CDiskLayoutImplementation::SetAutoMount: Disabling AUTOMOUNT
[mounter]            - VDiskMounter::MountAllDisks:failed VirtualSystem::Initialize()
[mounter]            - Error mounting disks (0xe0009741)
[fsys\ntfs\img_pdi]  + img_pdi_attach.cpp (551):
[fsys\ntfs\img_pdi]  | Error mounting disk(s): E_IMG_FS_FAILED_TO_MOUNT_VIRTUAL_DISK (0xe0009741).


A hotfix is now available for this issue in the current version(s) of the product(s) mentioned in this article. Refer to the Hotfix link under Related Documents at the end of this article to obtain the hotfix needed to resolve the issue.

Backup Exec 2010 R3 Rev 5204 Service Pack 4  (TECH208828)

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