Re: qmail-ldap and GFS

On 11/3/10 3:25 PM, Ibrahim Harrani wrote:
> Hi,
>
> Currently, my domains and users are distributed to different mailhosts
> in my qmail ldap cluster.
> In this setup, If I one of the mailhost is down, the users can't
> access to mailbox on this server.
> To setup a redundant system,  I would like to keep mailbox on GFS file
> system with multiple backends.
> All backends will share the same GFS partition. There will be one
> mailhost entry in openldap entries and
> load balancer to distrube pop3/imap and smtp connections to backends.
> If one of the backend is down, this will not effect
> the users.
>
> But, I have some doubts about locks and I/O issues. Can you please
> share your experience about this kind of setup?
>
> Thanks
>
Hi,

I have one software load balancer (LVS-DR) with two nodes-MTA, and each
node share a SAN partition. I set up a GFS cluster on both nodes. My
load balancer distribute smtp(25,587), pop3s, imap and imaps connections
to nodes. I have about 20000 Maildirs and so far not had any I/O issue.



-- 
......................................
 Eduardo Costa
 Centro de Comunicações - Instituto Politécnico de Bragança    
 raposo at ipb.pt               
 http://www.ipb.pt/~raposo/    
......................................

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