[gpfsug-discuss] what is mmnfs under the hood

[Greg.Lehmann at csiro.au]

It would be nice to know why you cannot use ganesha or mmsmb.

You don't have to use protocols or CES. We are migrating to CES from doing our own thing with NFS and samba on Debian. Debian does not have support for CES, so we had to roll our own. We did not use CNFS either. To get to CES we had to change OS. We did this because we valued the support. I'd say the failover works better with CES than with our solution, particularly with regards failing over and Infiniband IP address.

-----Original Message-----
From: gpfsug-discuss-bounces at spectrumscale.org [mailto:gpfsug-discuss-bounces at spectrumscale.org] On Behalf Of Ilan Schwarts
Sent: Sunday, 6 August 2017 7:50 PM
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] what is mmnfs under the hood

I have read this atricle:
https://www.ibm.com/support/knowledgecenter/en/STXKQY_4.2.0/com.ibm.spectrum.scale.v4r2.adv.doc/bl1adv_ces_migrationcnfstoces.htm

So, in a shortcut, CNFS cannot be used when sharing via CES.
I cannot use ganesha NFS.

Is it possible to share a cluster via SMB and NFS without using CES ?
the nfs will be expored via CNFS but what about SMB ? i cannot use mmsmb..


On Sun, Aug 6, 2017 at 12:42 PM, Ilan Schwarts <ilan84 at gmail.com> wrote:
> I have gpfs (spectrum scale 4.2.2.0) and I wish to create NFS exports, 
> I cannot use ganesha NFS.
> How do I make NFS exports ? just editing all nodes /etc/exports is enough ?
> I should i use the CNFS as described here:
> https://www.ibm.com/support/knowledgecenter/en/STXKQY_4.2.2/com.ibm.sp
> ectrum.scale.v4r22.doc/bl1adv_cnfssetup.htm
>
>
>
>
> On Sun, Aug 6, 2017 at 12:10 PM, Simon Thompson (IT Research Support) 
> <S.J.Thompson at bham.ac.uk> wrote:
>> 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-bounces at spectrumscale.org 
>> [gpfsug-discuss-bounces at spectrumscale.org] on behalf of 
>> ilan84 at gmail.com [ilan84 at 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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>
>
>
> --
>
>
> -
> Ilan Schwarts



-- 


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Ilan Schwarts
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