[SSSD] [PATCHES] Use entry USN when available

Sumit Bose sbose at redhat.com
Tue Dec 7 09:34:07 UTC 2010


On Mon, Dec 06, 2010 at 10:29:02AM -0500, Simo Sorce wrote:
> On Mon, 6 Dec 2010 15:29:44 +0100
> Sumit Bose <sbose at redhat.com> wrote:
> 
> > > 
> > > > > > OpenLDAP users might be happy if sssd would be able to
> > > > > > autodetect OpenLDAP and use entryCSN. Do you think check for
> > > > > > the OpenLDAProotDSE objectclass would be sufficient here?
> > > > > 
> > > > > Yes, give me the details and I can add that easily.
> > > > 
> > > > I think the only detail is the OpenLDAProotDSE objectclass. I
> > > > haven't found anything else in the OpenLDAP rootDSE which can
> > > > help here.
> > > 
> > > Which attribute does openLdap uses on entries ?
> > > entryUSN or USNChanged ?
> > 
> > entryCSN, see http://www.openldap.org/faq/data/cache/1145.html for
> > details.
> 
> It is not clear to me that entryCSN is server specific and always
> orders new entries at top, the format is also quite complex.
> It is also not clear if access to it is available to anonymous clients.

iirc entryCSN is used by OpenLDAP during replication so I would expect
that newer entries get "larger" entryCSNs.

> 
> If you do not mind I would defer implementation of its support to a
> separate ticket/patch.

ok, let's move this into a new ticket. This means

ACK

to the current version of the patches.

bye,
Sumit

> 
> Simo.
> 
> -- 
> Simo Sorce * Red Hat, Inc * New York
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