We are running GPFS 4.2.3 with Arcpix build 3.5.10 or 3.5.12.
We don't have Ganesha in the build. I'm not sure about the NFS service.

Thanks for the responses, its interesting how the discussion has branched into 
Ganesha and what ACL changes are picked up by Spectrum Protect and mmbackup (my 
next major change).
Any more responses on what is the best practice for the default POSIX owner and 
group of files and folders, when NFSv4 ACLs are used for SMB shares?

Kindest regards,
Paul

Paul Ward
TS Infrastructure Architect
Natural History Museum
T: 02079426450
E: p.w...@nhm.ac.uk

-----Original Message-----
From: gpfsug-discuss-boun...@spectrumscale.org 
<gpfsug-discuss-boun...@spectrumscale.org> On Behalf Of Jonathan Buzzard
Sent: 16 October 2019 10:36
To: gpfsug main discussion list <gpfsug-discuss@spectrumscale.org>
Subject: Re: [gpfsug-discuss] default owner and group for POSIX ACLs

On Wed, 2019-10-16 at 08:21 +0000, Malahal R Naineni wrote: >> Ganesha shows 
functions for converting between GPFS ACL's and the ACL format as used by 
Ganesha.   Ganesha only supports NFSv4 ACLs, so the conversion is a quick one. 
kernel NFS server converts NFSv4 ACLs to POSIX ACLs (the mapping isn't perfect) 
as many of the Linux file systems only support POSIX ACLs (at least this was 
the behavior).  

Yes but the point is you don't need POSIX ACL's on your file system if you are 
doing NFS exports if you use Ganesha as your NFS server and only do NFSv4 
exports. It is then down to the client to deal with the ACL's which the Linux 
client does. In fact it has for as long as I can remember. There are even tools 
to manipulate the NFSv4 ACL's (see nfs4- acl-tools on RHEL and derivatives).

What's missing is "rich ACL" support in the Linux kernel.

https://l.antigena.com/l/wElAOKB71BMteh5p3MJsrMJ1piEPqSzVv7jGE7WAADAaMiBDMV~~SJdC~qYZEePn7-JksRn9_H6cg21GWyrYE77TnWcAWsMEnF3Nwuug0tRR7ud7GDl9vPM3iafYImA3LyGuQInuXsXilJ6R9e2qmotMPRr~Lsq9CHJ2fsu1dBR1EL622lakpWuKLhjucFNsxUODYLWWFMzVbWj_AigKVAIMEX8Xqs0hGKXpOmjJOTejZDjM8bOCA1-jl06wU3DoT-ad3latFOtGR-oTHHwhAmu792L7Grmas12aetAuhTHnCQ6BBtRLGR_-iVJFYKfdyJNMVsDeKcBEBKKFSZdF~7ozqBouoIAZPE6cOA8KQIeh6mt1~_n

which seems to be down at the moment. Though there has been activity on the 
user space utilities.

https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fandreas-gruenbacher%2Frichacl%2F&amp;data=02%7C01%7Cp.ward%40nhm.ac.uk%7C2c1e0145dadd4d35842508d7521c4b9c%7C73a29c014e78437fa0d4c8553e1960c1%7C1%7C0%7C637068153793755413&amp;sdata=aUmCoKIC1N5TU95ILatCp2IlmdJ1gKKL8y%2F1V3kWb3M%3D&amp;reserved=0

Is it possible to get IBM to devote some resources to moving this along. It 
would make using GPFS on Linux with ACL's a more pleasant experience.


JAB.

-- 
Jonathan A. Buzzard                         Tel: +44141-5483420
HPC System Administrator, ARCHIE-WeSt.
University of Strathclyde, John Anderson Building, Glasgow. G4 0NG



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