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

[hyc@symas.com]

ildefonso_camargo@yahoo.com wrote:
> 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 repeated the steps you described but was unable to reproduce the problem. 
However, following the steps that Adrien provided in a followup, I was able to 
reproduce the situation and identify the problem. A fix is now in CVS HEAD, 
please test.

-- 
   -- Howard Chu
   CTO, Symas Corp.           http://www.symas.com
   Director, Highland Sun     http://highlandsun.com/hyc/
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