SnapDrive fails to interact with ReFS LUN
Applies to
- Windows Server
- 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"