topic Windows Services for UNIX NFS mount gets UID -2 - need ROOT in ONTAP Discussions

Windows Services for UNIX NFS mount gets UID -2 - need ROOT

fletch2007 — Thu, 05 Jun 2025 07:02:27 GMT

Hi,

we use Windows Services for UNIX (WSFU) to NFS mount our netapp .snapshots to windows hosts (to use a great little util http://www.ufsexplorer.com/ to mount VMDKs and restore guest files - highly recommend it)

Problem comes when some of the vmdk files are readable only by root - UFS explorer can not mount these via the NFS because WSFU mounting by default with an effective UID of -2 (see screenshot of NFS mount properties)

The volume is shared on the Netapp side with this host's IP in the ROOT acl (as we do for Unix NFS clients) - but this is not translating to a root UID on the windows client.

Can anyone offer guidance how to tune WSFU to obtain UID root instead of -2?

thanks in advance,

Will summarize,

http://vmadmin.info

Re: Windows Services for UNIX NFS mount gets UID -2 - need ROOT

aborzenkov — Wed, 12 Jan 2011 07:25:28 GMT

UID -2 means user is not mapped (IIRC). You need to setup WSFU user mapping service and map some Windows user to root; the you will be able to mount share on behalf of this user as root.

See e.g. http://technet.microsoft.com/en-us/library/bb463203.aspx

Re: Windows Services for UNIX NFS mount gets UID -2 - need ROOT

fletch2007 — Thu, 10 Feb 2011 18:39:02 GMT

Thanks, it turns out SFU has a method to assign these mappings !

I successfully mapped root and solved the issue

thanks

http://vmadmin.info