[389-users] Multimaster replication out of sync

[Mitja Mihelič]

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 ?

Regards,
Mitja