-------- Original-Nachricht -------- > Datum: Wed, 12 Jan 2011 14:25:04 +0000 > Von: Jonathan Tripathy <jon...@abpni.co.uk> > An: postfix-users@postfix.org > Betreff: Re: Network Ideas
> > > Hello Jonathan, > > > >> I think what I am getting confused over is whether or not your > GlusterFS > >> node are the same are your Postfix servers. > >> > > yes. They are. > > > > > >> I did a little reading > >> online, and from my understanding, you have 2 GlusterFS server and 2 > >> GlusterFS clients. > >> > > Correct. > > > > > >> Does this mean you have 4 servers in total? > >> > > No. As I wrote in my other message: one design goal was to have autarkic > mail nodes. So each of those nodes is acting as GlusterFS server > (connecting to the other GlusterFS servers) and as GlusterFS client > (consuming the > storage exposed from the GlusterFS server). > > > > > >> Or have > >> you managed somehow to make a GlusterFS node act as a Postfix/Dovecot > >> box as well? > >> > > Somehow? No. It is not "somehow". Just take your OS of choice and > install Fuse and GlusterFS. Then configure your GlusterFS server and the > client > part. That's it. > > > > > > Don't confuse the GlusterFS thing with the Gluster Storage Platform. The > use the same technology but the Gluster Storage Platform adds additional > GUI and management stuff to make a easy to use storage platform. For your > needs you just can use the GlusterFS software and don't need the platform > part. > > > > > >> Thanks > > Sounds interesting. So each node is a GlusterFS server and client. Does > the GlusterFS client config file have both servers in it? > You can do that or if you like separate them from each other. > And I'm guessing you've configured postfix's maildir path to point to > the mount that the GlusterFS client has mounted? > In my case postfix does not deliver the mail. It's dovecot and yes. Dovecot is configured to store the data into the place where GlusterFS has mounted the storage. > Oh and one final question, how does GlusterFS handle split-brain? Let's > say somehow the replication link became broken, but both Postfix servers > continued to operate... > This is documentation from 2.x series of GlusterFS but it still applies to 3.x: http://www.gluster.com/community/documentation/index.php/Understanding_AFR_Translator Major point is that GlusterFS is NOT another file system. GlusterFS uses a disk based backend and relies heavily on the underlying filesystem extended attributes for handling which file is more recent on one brick over another when performing a self heal after a split brain condition. -- Neu: GMX De-Mail - Einfach wie E-Mail, sicher wie ein Brief! Jetzt De-Mail-Adresse reservieren: http://portal.gmx.net/de/go/demail
