[gpfsug-discuss] quota on secondary groups for a user?

[Jonathan Buzzard]

On 03/08/16 19:34, Buterbaugh, Kevin L wrote:
> Hi Jaime / Sven,
>
> If Jaime’s interpretation is correct about user1 continuing to be able
> to write to “group2” files even though that group is at their hard
> limit, then that’s a bug that needs fixing.  I haven’t tested that
> myself, and we’re in a downtime right now so I’m a tad bit busy, but if
> I need to I’ll test it on our test cluster later this week.
>

Even if Jamie's interpretation is wrong it shows the other massive 
failure of group quotas under Unix and why they are not fit for purpose 
in the real world.

So bufh here can deliberately or accidentally do a denial of service on 
other users and tracking down the offending user is a right pain in the 
backside.

The point of being able to change group ownership on a file is to 
indicate the massive weakness of the whole group quota system, and why 
in my experience nobody actually uses it, and "project" quota options 
have been implemented in many "enterprise" Unix file systems.

JAB.

-- 
Jonathan A. Buzzard                 Email: jonathan (at) buzzard.me.uk
Fife, United Kingdom.