Under the hood, the NFS services are provided by IBM supplied Ganesha rpms. 
It's then fully supported by IBM, e.g. the GPFS VFS later to handle locking, 
ACLs, quota etc...

Note it's different from using the cnfs support in Spectrum Scale which uses 
Kernel NFS AFAIK. Using user space Ganesha means they have control of the NFS 
stack, so if something needs patching/fixing, then can roll out new Ganesha 
rpms rather than having to get (e.g.) RedHat to incorporate something into 
kernel NFS.

Mmnfs is a wrapper round the config of Ganesha using CCR to distribute the 
config to the nodes.

Simon
________________________________________
From: gpfsug-discuss-boun...@spectrumscale.org 
[gpfsug-discuss-boun...@spectrumscale.org] on behalf of ila...@gmail.com 
[ila...@gmail.com]
Sent: 06 August 2017 09:26
To: gpfsug main discussion list
Subject: [gpfsug-discuss] what is mmnfs under the hood

Hi guys,

I see IBM spectrumscale configure the NFS via command: mmnfs

Is the command mmnfs is a  wrapper on top of the normal kernel NFS
(Kernel VFS) ?
Is it a wrapper on top of ganesha NFS ?
Or it is NFS implemented by SpectrumScale team ?


Thanks

--


-
Ilan Schwarts
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