Cloning a VMDK file to an RDM fails with the error: The destination file system does not support large files
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Cloning a VMDK file to an RDM fails with the error: The destination file system does not support large files

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Article ID: 304411

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Updated On:

Products

VMware vSphere ESXi

Issue/Introduction

Symptoms:
  • Cloning a VMDK file to an RDM fails
  • You see the error:

    Failed to clone disk : The destination file system does not support large files (12)


Environment

VMware ESX 4.0.x

Resolution

This issue occurs if you use an incorrect syntax in the clone command.
The correct syntax is:
vmkfstools -i <srcfile> rdm:<identifier> <desfile>
# vmkfstools -i /vmfs/volumes/datastore/directory/TEST01.vmdk –d rdm:/vmfs/devices/disks/naa.6000d310001952000000000000000087 /vmfs/volumes/datastore/directory/TEST01_rdm1.vmdk
For example, this issue occurs if you use an incorrect device name (naa: instead of naa. ):

# vmkfstools -i /vmfs/volumes/datastore/directory/TEST01.vmdk –d rdm:/vmfs/devices/disks/naa:6000d310001952000000000000000087 /vmfs/volumes/datastore/directory/TEST01_rdm1.vmdk
To convert an RDM to a virtual disk, run the vmkfstools command with the pointer file for RDM as the source and the VMDK as the destination.
For example:

# vmkfstools -i /vmfs/volumes/datastore/directory/TEST01_rdm1.vmdk –d rdm:/vmfs/devices/disks/naa:6000d310001952000000000000000087 /vmfs/volumes/datastore/directory/TEST01.vmdk


Additional Information

For related information, see
Converting a virtual disk into a Raw Device Mapping

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