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SnapDrive fails to interact with ReFS LUN

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Category:
snapdrive-for-windows
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snapx
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Applies to

Product Model: FAS8060-R6
OS: Clustered Data ONTAP 8.3.2P2

  • Windows Server 2012
  • SnapDrive for Windows

Issue

SnapDrive for Windows fails to interact (expand, shrink, reclaim space)with a LUN that was formatted with a Windows Resilient File System (ReFS).

When performing a LUN resize utilizing SnapDrive for Windows, the process fails with an Incorrect function error.
Review of the SnapDrive debug logs (Snpdrvdbg.log) located in the installation path for SnapDrive for Windows may reveal one or more of the following errors:

'The LUN may not have a File System created on it, or it may not be formatted with the NTFS file system. If it is a cluster system this situation can be caused by the LUN being offline, or not owned by this computer.'

'Failed to update virtual disk info on first pass, device path: '\?\mpio#disk&ven_netapp&prod_lun_c-mode&rev_0.3_#1&7f6ac24&0&383037416f2b494175346a32#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}', lun path '/vol/volumename/lun_name', SCSI address '(X,X,X,X)', error code 0xc0040494, error description 'The LUN may not have a File System created on it, or it may not be formatted with the NTFS file system. If it is a cluster system this situation can be caused by the LUN being offline'

The Window's Application Event logs may list Event ID 125 for the Source SnapDrive and contain similar event details as below:

Failed to expand the LUN by XXXXXXX MB. Failure in expanding NTFS file system on the disk.
LUN Name = LUNNAME.lun
Storage Path = /vol/VOLUMENAME/
Protocol Type = HTTP
Storage System Name = STORAGESYSTEM
Error code : Incorrect function.

 

When performing a Space Reclamation on ReFS LUN, you might receive:

Space Reclamation operation failed on Mount Point "X"

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