On Fri, Jul 03, 2015 at 05:01:13PM -0400, Simo Sorce wrote:
> On Fri, 2015-07-03 at 21:34 +0200, Sumit Bose wrote:
> > On Fri, Jul 03, 2015 at 02:12:34PM -0400, Simo Sorce wrote:
> > > On Fri, 2015-07-03 at 11:59 +0200, Jakub Hrozek wrote:
> > > > On Fri, Jul 03, 2015 at 11:54:46AM +0200, Jakub Hrozek wrote:
> > > > > Hi,
> > > > > 
> > > > > the attached patches fix https://fedorahosted.org/sssd/ticket/2701
> > > > > 
> > > > > The first patch just adds a common function instead of copying the 
> > > > > same
> > > > > pattern again to the new test.
> > > > > 
> > > > > The second adds a new request krb5_auth_queue_send() that wraps
> > > > > krb5_auth_send() and also uses the Kerberos authentication queue. I 
> > > > > hope
> > > > > the unit tests cover a lot of use-cases, if not, please suggest more!
> > > > > 
> > > > > btw I was thinking that the chaining might not always be necessary if
> > > > > the ccache is of type MEMORY and I hope that the serializaton wouldn't
> > > > > be perceived as performance regression for users. Shall we say that
> > > > > Pavel's cached auth patches are a more systematic solution that 
> > > > > doesn't
> > > > > rely on properties of the ccache type in that case?
> > > > 
> > > > I'm sorry, but CI fails on Debian because of wrong linking with
> > > > libraries. I'm already testing a fix. Review of the rest is appreciated
> > > > :-)
> > > 
> > > If we are serializing all authentications then a busy server would be
> > > swamped. I do not see a per-user/per-cache queue so I would tentatively
> > > NACK the approach sorry.
> > 
> > The current cache queue is per user, see add_to_wait_queue() for
> > details.
> 
> I actually did look to check that and failed, I blame the late hour :-)

Ah, I thought that goes without saying it's not a responder-global queue
:-)

> 
> Per-user is fine by me, though I would seriously consider de-duplication
> while we are here.

What exactly do you propose here?
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