[OpenAFS] significant delay for afs user to login as root via su

Simon Wilkinson sxw@inf.ed.ac.uk
Wed, 17 Mar 2010 20:37:55 +0000

On 17 Mar 2010, at 20:24, ematlis@yahoo.com wrote:
> I have noticed a significant delay (30 seconds or more) for a user  
> logged in through an AFS account to open the root account via the  
> command "su".  This delay does not happen for a local account.  I'm  
> not sure where to start looking for this one. Any ideas?

Are you using pam_afs_session? We've just discovered that when that is  
enabled in the su stack, becoming root takes a very long time, whether  
or not you have set the minimum_uid or not. The simple solution is to  
not run pam_afs_session in the 'su' stack.

More investigation is required into what's actually going wrong, but  
nobody here has had a chance to do so yet. Given that just removing  
pam_afs_session from the su stack gives us the behaviour we want, I'm  
not sure how much more investigation we'll end up doing.

It might be worth speaking to Russ to see if anyone else is seeing  
this problem, or he might chime in here.