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Re: syncrepl giving error "CSN too old, ignoring " for detla replication

To: Quanah Gibson-Mount <quanah@zimbra.com>
Subject: Re: syncrepl giving error "CSN too old, ignoring " for detla replication
From: Yuri Bank <yuribank@gmail.com>
Date: Sat, 3 Sep 2011 14:29:48 -0700
Cc: Rupesh Thakkar <rupeshthakkar@gmail.com>, openldap-technical@openldap.org
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In-reply-to: <A9CFA697271460C27CE4FDED@192.168.1.2>
References: <CAAF9W3N+h+yNeYXQ-PbucZ88Ajh0KaDuP8gWQkjouLpiHOkQOg@mail.gmail.com> <CAAF9W3N7vhQ_kBEjRTEQh70QCnuNc7gYDiNOuo2UNWj+NbKH-g@mail.gmail.com> <CAJB6JJ_NmHCH59kLHEPmMXqxAecu=DofS6ZG2rH5P-=_e16Oww@mail.gmail.com> <A9CFA697271460C27CE4FDED@192.168.1.2>

Hmm. I thought you only needed NTP time sync with N-way and MMR. But not with single Provider. I guess I never noticed an issue with this since my servers run ntp ayways.

On Sat, Sep 3, 2011 at 1:57 PM, Quanah Gibson-Mount <quanah@zimbra.com> wrote:

--On Saturday, September 03, 2011 1:02 AM -0700 Yuri Bank <yuribank@gmail.com> wrote:

I've seen a very similar issue (ContextCSNs being newer on my consumers),
and I believe it was fixed in OpenLDAP (2.4.26). Do the "CSN too old,
ignoring" error messages spam endlessly in your consumer logs?

As for your other questions. You only need a single accesslog, and the
clocks on your consumer nodes do not need to be in synch with the
Provider (in deltasync replication).

Wrong. Your clocks should *always* be tightly in sync. Particularly with the advent of delta-sync MMR in the next release.

--Quanah

--

Quanah Gibson-Mount
Sr. Member of Technical Staff
Zimbra, Inc
A Division of VMware, Inc.
--------------------
Zimbra :: the leader in open source messaging and collaboration

Follow-Ups:
- Re: syncrepl giving error "CSN too old, ignoring " for detla replication
  - From: Rupesh Thakkar <rupeshthakkar@gmail.com>

References:
- syncrepl giving error "CSN too old, ignoring " for detla replication
  - From: Rupesh Thakkar <rupeshthakkar@gmail.com>
- Re: syncrepl giving error "CSN too old, ignoring " for detla replication
  - From: Rupesh Thakkar <rupeshthakkar@gmail.com>
- Re: syncrepl giving error "CSN too old, ignoring " for detla replication
  - From: Yuri Bank <yuribank@gmail.com>

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