(ITS#5843) Multi-master doesn't replicate deletes under certain circumstances.

[ildefonso_camargo@yahoo.com]

Full_Name: Jose Ildefonso Camargo Tolosa
Version: 2.4.13
OS: Linux
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (190.73.138.178)


Hi!

I just configured multi-master replication (with N=3) for testing
purposes, and I just found an annoying problem, under these
conditions:

1. Configure a N number of "masters", and have them replicate happily
(this is important).
2. Stop slapd service on all of the servers.
3. Start slapd service on any number of servers < N (ie, leave at
least one stopped).
4. Delete any entry (yes, it only fails with deletes, you can combine
changes: modify, add, and delete, and only deletes will fail to
replicate).
5. Stop slapd service on *all of the servers again* (this is the most
important part).
6. Start slapd service on all the servers.
7. Look for the deleted entry on the server(s) that you left stopped in steps 3
and 4, the entry is there!, but it isn't on the server(s) that were running in
step 3 and 4.

You will see that, on the servers that you left down on step 3, the
deleted entries are still present.

If you leave at least one server up, it replicates just fine, the
problem is when you stop all of the masters, and then start them again.

If you need further info, just ask!

I hope this helps,

Ildefonso Camargo