RE: multi-master syncrepl issue

[Quanah Gibson-Mount <quanah@zimbra.com>]

--On Tuesday, August 21, 2012 1:10 PM +0000 Chris Card <ctcard@hotmail.com> 
wrote:

> Hi All,
>
> In addition to the questions below (which I'd still like to see an answer
> to), I have a further related question.
>
> I now have 4 machines set up for multi-master replication of this
> directory, and the contextCSNs were all in sync last week. One of the
> machines was taken down for maintenance for a couple of days and has only
> just come back up, so its contextCSN is way behind
> (20120818093702.01462Z#000000#001#000000 compared
> toÂ20120821130410.679339Z#000000#001#000000 as of now). This machine
> has now been up and running for a few hours, but there's no sign of
> replication catching up. Should ldap replication sort itself
> outÂautomatically and bring this machine's directory in line? Or do I
> need to do something manually to force it?

Do you have sync logging enabled?

In any case, with a server that large (3.5 million entries), I expect it 
will generally take a few months for it to catch up, since with standard 
syncrepl, it is going to try and refresh the entire database if it passed 
your sync ops log.  I would strongly advise delta-syncrepl MMR instead, 
although that may take a significant amount of disk space for such a large 
DB if it is heavily active.

--Quanah


--

Quanah Gibson-Mount
Sr. Member of Technical Staff
Zimbra, Inc
A Division of VMware, Inc.
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