thanks for your answer.
see my response below
2014-04-20 7:13 GMT+04:00 Howard Chu <hyc(a)symas.com>:
> Full_Name: Jephte CLAIN
> Version: 2.4.39
> OS: Debian 6 64bits
> URL: http://jclain.fr/openldap-its/
> Submission from: (NULL) (184.108.40.206)
> I have scripts to test several replication scenarii, that setup the LDAP
> environment then allow me to play with parameters as I see fit.
> I believe that there is a bug with the "seed replication" that allow one
> build an exact clone of a master with minimal configuration on the slave
There is no bug. The syncrepl consumer is working as designed. If you want
the consumer's entries to be automatically overwritten, create the consumer
first so that its seed entries have older timestamps than the provider.
ok, it works as designed. I just didn't know what the design was :-)
quoting man slapd:
Use only the rid part to force a full reload.
I guess I didn't notice that the word "full" have a different meaning
here than usual
about creating the consumer first. you are kidding, right? in
production, the provider exists long before the consumer is set up.
the tests I do are based on the production state.
anyway, my automated scripts "touch" the provider after setting up the
slave, so this is not a problem.
It's just that I would prefer not to have wasted time wondering why
the slave was not being updated even though I asked for a "full"
Thanks for your answer. It's now clearer in my mind.
I Cc the openldap-technical list, this can help others.
> note: the tests below require 2 VMs, or running the two slapd instances in
> chroots, because a clone replica requires the data files to be in the same
That's far overkill. All you need to do is configure your test scripts to
use relative pathnames. test049 (and others) in the test suite already
operates this way.
ok thanks for pointing this out
It has been a while since I read the tests scripts. I should have paid
Closing this ITS.
> I attach two scripts to replicate the problem. they require root (they
> this is with openldap 2.4.39 on debian squeeze. some paths may have to be
> in the scripts below
> use jclain-20140419-0start.sh to:
> - create a ldap server to be served on ldap://localhost:3890
> - start the master in chroot
> (the logs are in /jclain-slapd-test/master.data/slapd.log)
> - create a seed ldap replica to be served on ldap://localhost:3891 with
> ldap://localhost:3890 as the provider
> - start it in chroot with option -c rid=0
> (the logs are in /jclain-slapd-test/slave.data/slapd.log)
> use jclain-20140419-1stop.sh to:
> - stop the servers
> - umount the chroots
> If I understand the manual correctly, after 0start.sh, the replica should
> identical to the master thanks to -c rid=0
> BUT, the log on the replica says:
> 534d5481 dn_callback : new entry is older than ours cn=config ours
> 20140415154713.807278Z#000000#000#000000, new
> and indeed, the seed entries are NOT overwritten
> I have to "touch" them on the master to force the replication.
> I have uploaded the scripts to http://jclain.fr/openldap-its/
> thanks in advance
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/
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