Error: CSN too old and replication fails

[Jérémy Wagner <jeremy.wagner@unistra.fr>]

Hello,

I'm facing some issues with syncrepl...

The simplest situation in which I was able to reproduce the problem 
consists of 1 provider and 1 consumer.

I have configured syncrepl to do a partial replication :

olcSyncrepl:
    {0}rid=105
    provider=ldaps://****:636
    bindmethod=simple
    timeout=0
    network-timeout=0
    starttls=no
    filter="(mail=*)"
    searchbase="ou=groups,o=mydir"
    scope=sub
    schemachecking=off
    attrs="cn description mail member +"
    type=refreshAndPersist
    retry="60 +"
    tls_cert=**** tls_cacert=**** tls_key=****

olcSyncrepl:
    {1}rid=107
    provider=ldaps://****:636
    bindmethod=simple
    timeout=0
    network-timeout=0
    starttls=no
    filter="(objectclass=*)"
    searchbase="ou=operators,o=mydir"
    scope=sub
    schemachecking=off
    type=refreshAndPersist
    retry="60 +"
    tls_cert=**** tls_cacert=**** tls_key=****

olcSyncrepl:
    {2}rid=104
    provider=ldaps://****:636
    bindmethod=simple
    timeout=0
    network-timeout=0
    starttls=no
    filter="(uid=mytestuser)"
    searchbase="ou=people,o=mydir"
    scope=sub
    schemachecking=off
    type=refreshAndPersist
    retry="60 +"
    tls_cert=**** tls_cacert=**** tls_key=****

The initial sync (i.e. from an empty base) is fine, but then when I 
modify an entry (uid=mytestuser), it is not updated on the consumer, and 
I get the
following messages:

Feb 16 15:42:32 do_syncrep2: rid=107 NEW_COOKIE: 
rid=107,csn=20110216144232.222152Z#000000#000#000000
Feb 16 15:42:32 do_syncrep2: rid=104 
cookie=rid=104,csn=20110216144232.222152Z#000000#000#000000
Feb 16 15:42:32 slap_graduate_commit_csn: removing 0x7fb58c0227d0 
20110216144232.222152Z#000000#000#000000
Feb 16 15:42:32 do_syncrep2: rid=104 CSN too old, ignoring 
20110216144232.222152Z#000000#000#000000
Feb 16 15:43:05 do_syncrep2: rid=105 LDAP_RES_INTERMEDIATE - NEW_COOKIE
Feb 16 15:43:05 do_syncrep2: rid=105 NEW_COOKIE: 
rid=105,csn=20110216144305.545784Z#000000#000#000000
Feb 16 15:43:05 slap_queue_csn: queing 0x7fb58c020b50 
20110216144305.545784Z#000000#000#000000
Feb 16 15:43:05 do_syncrep2: rid=107 LDAP_RES_INTERMEDIATE - NEW_COOKIE
Feb 16 15:43:05 do_syncrep2: rid=107 NEW_COOKIE: 
rid=107,csn=20110216144305.545784Z#000000#000#000000
Feb 16 15:43:05 do_syncrep2: rid=104 
cookie=rid=104,csn=20110216144305.545784Z#000000#000#000000
Feb 16 15:43:05 slap_graduate_commit_csn: removing 0x7fb58c0227d0 
20110216144305.545784Z#000000#000#000000
Feb 16 15:43:05 do_syncrep2: rid=104 CSN too old, ignoring 
20110216144305.545784Z#000000#000#000000

(both servers are perfectly in sync with an NTP daemon)

It looks like ITS #6619 is quite similar, and unresolved.

What do these messages mean ? Is there a way to force the update ?

Regards,

    Jeremy W.