[CentOS] clustered mail server?

[Christopher Chan]

Ralph Angenendt wrote:
> Christopher Chan wrote:
>> Okay, Les helped me with that one. RAID1 on the network. So you would have 
>> to use GFS or something like that with it and have the service down on the 
>> secondary unless it was sendmail you were running.
> 
> No and yes. You can just use ext3 on both nodes as you normally only
> have the one on the primary node mounted - the other one is not accessed
> by anything. And yes, with heartbeat you "just" failover to the second
> node, if the first one is dead. That will start the needed services on
> the second node.

Are you positive that you can put ext3 on it and have it mounted on the 
secondary while the primary is happily hammering away without any ill 
effects? Have you done it?