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Re: null_callbacks after initial sync
Howard Chu wrote:
> Nick Geron wrote:
>> If I add logbase and syncfilter, I see the behavior where any serverID
>> other 1 (on either system) results in the looping mentioned previously,
>> when one server is down. In that setup with both servers up, I still
>> see the null_callback issues.
>> At this point I'm pretty frayed. I don't see how copying something
>> directly out of the admin doc would fail unless I've tickled a new bug.
>> Perhaps someone could suggest a known good, working config for me to
>> try? I would prefer delta-syncrepl in a mirror, but I'd settle for just
>> syncrepl with a mirror at this point.
> Delta-syncrepl is not supported yet with mirror mode. Support may come
> in a later release.
Thanks for the info. Someone might want to update the admin doc. From
section 188.8.131.52 - Mirror Mode Configuration - "This is the same as the
Set up the provider slapd section, reference delta-syncrepl replication
if using delta-syncrepl."
We're now thinking some of our issues may be attributable to time
granularity issues. We're seeing missing information on the consumer if
multiple successive writes are attempted via a script. If we slow down
to human speed or insert sleeps in our test code, this gets a little
better. I see that A.2.4 N-Way MultiMaster Replication notes that
entryCSNs now record with microseconds, but does this apply to mirrors
as well? Can I setup a two node N-Way? Can anyone provide config
examples using slapd.conf syntax instead of the cn=config in the admin doc?
Also, though the Syncrepl Details section does provide what it says,
could anyone offer a high level overview of the synchonization process?
Something like a trace of operations from an initial modification on one
server through the propagation to consumers (server 1 gets write request
-> updates index -> writes to session log, etc. etc.etc.).