Re: Lock is no longer valid / deferring operation

[Toby Blake <toby@inf.ed.ac.uk>]

> > Yes, the model is essentially one of a central write-master with all
> > clients being replicas (using our own replication technology).  We do
> > want to think about moving away from this, however, possibly using
> > local proxy-caching with a handful of servers replicating from the
> > master with syncrepl.  It's all still to be investigated properly, but
> > there's certainly an incentive for that.
>
> Ok, well you should have really mentioned "using our own replication
> technology", and since we have no way of knowing what this is or why
> you are using it, we can't possibly help diagnose if this is having
> an effect on slapd, other than what we have already discussed.
>
> Why not use an open/rfc'd proven replication technology?

Again, decisions from the past.  Yes, apologies, I should have
mentioned our own replication, although I don't believe this to be
much of a factor here - in essence the replication is a pull-based
form of synchronisation which knows the last modification date of the
local directory and then queries the master for entries modified after
that date.  It uses standard LDAP operations to make the changes to
the local directory.

Cheers
Toby