[389-users] Multimaster replication out of sync

[Rich Megginson]

Mitja Mihelič wrote:
>
>
> On 12/07/2009 05:18 PM, Rich Megginson wrote:
>> Mitja Mihelic wrote:
>>> Hi!
>>>
>>> We have two instances of the DS in a multimaster replication setup.
>>> We had to restore the database of one of the servers from backup.
>>> While the second master was down, the first was receiving updates.
>>> After we fired up the restored master it started receiving updates as
>>> soon as a change occurred on the first master (i.e. after 15 minutes)
>>> After the sync finished, we noticed they weren't identical.
>>> Clicking "Send updates now" from the replication agreement does not 
>>> help.
>>>
>>> Is there a way to get them synced up again ? Other than reinitializing
>>> the second/restored master ?
>> How long was the server down?  How old was the backup it was restored 
>> from?
> The server was not down long, but the backup was about 10 hours old.
> This was a backup at filesystem level made by ufsdump. It was not a 
> "regular" DS backup.
> When we restored the database file from the dump the server booted OK.
>
> Then we made little test:
> - made another ufsdump of the second master
> - shut down the server
> - let the primary master update for an hour
> - restored the second master's database from the dump
> - started the second master
> - let them do their replication magic
> - isolated both servers (i.e. no updates)
> - compared the LDIF dumps
> Again, they were not the same.
>
> We probably should have used the built in backup functionality, right ?
Yes, although I'm not sure what would be causing the problems you see.

In general, when the database state changes, you have to reinitialize 
replication.
>
> Regards,
> Mitja
>
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