Group membership limit


 
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Operating Systems Solaris Group membership limit
# 1  
Old 04-09-2008
Group membership limit

On Solaris, a user is limited to being a member of a maximum of 16 groups. Could someone tell me where this limit comes from, i.e. is it NIS, or Solaris, or NFS that is imposing this limit?

What is the work-around to remove this limitation?

Last edited by son_t; 04-09-2008 at 08:49 AM..
# 2  
Old 04-10-2008
Java

Hi son_t,

This may answer your question;

Peter Harvey's blog

I hope this is of help.

Jnike
# 3  
Old 04-10-2008
Many thanks for that... I've just read it, but really need to digest...

Is he saying increasing the max group membership is possible, if we go to NFS v4 AND Solaris 10 with the 'hack' that he kind of outlines?

Can I go to NFS v4 and use Samba on Linux to get around this problem that I am having with NFS+Solaris+Samba?
# 4  
Old 04-10-2008
Java

Hi son_t,

I'm still digesting this information myself......

Q1
Quote:
Originally Posted by son_t
Is he saying increasing the max group membership is possible, if we go to NFS v4 AND Solaris 10 with the 'hack' that he kind of outlines?
Remember the over heads described here...

So that's it is it? Just increase NGROUPS_MAX_DEFAULT?
Err, not quite. Not if we want 10,000+ groups. Let's see ...


see section = Scalability!!

Q2
Quote:
Originally Posted by son_t
Can I go to NFS v4 and use Samba on Linux to get around this problem that I am having with NFS+Solaris+Samba?
I'm not sure at this point, but you should be careful before considering implementing this type of changes to your system.

see section = So this what I'm thinking ...
This kind of change could break many things so we have an internal architectural review group that discuss this sort of thing.

I hope this is of help.

Jnike
# 5  
Old 04-11-2008
I see that the article is pretty old, and that Solaris 10 is quite mature(ish) now. So this group membership limit might have been removed in Solaris 10? (i.e. the hack has gone into the code?)
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