[Fedora-directory-users] MMR: Directory updates on same object

[Richard Megginson]

Reinhard Nappert wrote:
> Richard,
>
> I attached the entire access and error log file of one Master
> (MasterOne) and the error file of the other (MasterTwo). You see that
> the last update through the client was conn=50 op=424 on MasterOne. In
> errors, you see that it still processed the operation conn=50 op=650.
>
> This time the crash happened on MasterOne.
>   
Thanks.  This is a very interesting test.  You are generating 
replication conflicts:
[05/Sep/2007:13:15:40 -0400] conn=51 op=29 csn=46dee55f000200030000 - 
Naming conflict ADD. Renamed existing entry to 
nsuniqueid=99277847-1dd111b2-80dfcd7f-b7bc0000+ou=repltest

It looks as though you are repeatedly adding and deleting the same entry 
from both servers at the same time, which should be fine.  Could you 
post your script that you use to generate these entries?

> Hope, this helps
> -Reinhard
>
> -----Original Message-----
> From: fedora-directory-users-bounces at redhat.com
> [mailto:fedora-directory-users-bounces at redhat.com] On Behalf Of Reinhard
> Nappert
> Sent: Wednesday, September 05, 2007 1:06 PM
> To: General discussion list for the Fedora Directory server project.
> Subject: RE: [Fedora-directory-users] MMR: Directory updates on same
> object
>
>  Actually, I did use log level 8192. I saw that at some point the access
> logs stopped generating entries for the updates, but errors still had
> about 150 operations logged. I do not have those logs anymore, but I can
> reproduce those in a while, when I am done with some other tests.
>
> I run those tests on a mixed environment (Solaris 9 and Linux) 32bit.
> This happens on both boxes. I also have seen it on a pure Linux
> environment.
>
> When I have the error logs, I will post them
>
> -Reinhard
>
> -----Original Message-----
> From: fedora-directory-users-bounces at redhat.com
> [mailto:fedora-directory-users-bounces at redhat.com] On Behalf Of Richard
> Megginson
> Sent: Wednesday, September 05, 2007 12:56 PM
> To: General discussion list for the Fedora Directory server project.
> Subject: Re: [Fedora-directory-users] MMR: Directory updates on same
> object
>
> Reinhard Nappert wrote:
>   
>> I have a working Multi-Master Replication setup with two masters 
>> (Fedora Directory Server 1.0.4). The setup works fine as long as I do 
>> not update the same object via both Masters. When the later happens 
>> (application driven), one of the Master crashes. This server does not 
>> generate a core dump, nor can I find any unusual in the access and 
>> error log files. I am pretty sure that it has to do something with the
>>     
>
>   
>> conflict resolution, but I am stuck now.
>>
>> Did anybody experience a similar behavior?
>>
>>     
> Can you reproduce the problem with the replication log level on?  
> http://directory.fedoraproject.org/wiki/FAQ#Troubleshooting
>
> What OS are you on?  32bit or 64bit?
>   
>> Thanks,
>> -Reinhard
>>
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