Re: Shared queue directory & pid for 2 postfix

Laurent Neiger wrote:
> Hello all,
>
> Victor Duchovni wrote:
>
>>
>> You may not share a single queue directory between two Postfix instances.
>> If you follow this rule, no conflicts will occur.
>>
>> You may share a /var/spool/mail directory (with appropriate mbox
>> locking),
>> or a maildir hierarchy (no locking required even with NFS). In other
>> words
>> share the user mailbox store, but DO NOT share the MTA queus.
>
>
> Thanks a lot for your quick (and sharp !) answer, Victor.
>
> Yes in fact you are right and we are likely to have 2 different queue
> directories for our 2 postfix. And BTW it solves the point of the pid.
>
> But in our specific context of cluster, how can we manage the
> possibility of a realserver crashing ? In this case the queue directory
> on the NFS disk will become "orphan", and if the realserver cannot be
> rebuild quickly (I mean in about one hour), all the e-mails in queue
> just before the crash will be holding forever... Not really acceptable
> for a HA-cluster for our users...
>
> Is there a simple way to ask the postfix of the other realserver, alive
> and treating its own queue, to flush (I do not mean erase, but recover
> for him and bring back to its queue in order to try to deliver) the
> orphan queue directory of the dead postfix ?
>
> I like to think we cannot be alone having this cluster problematic... :-/
>
> Thanks again for your help,
>
> best regards,
>
> Laurent.
>
>
Did you guys look at DRBD before deciding on NFS?

Not trying to teach my grandmother to suck eggs, I'm just curious..