One thing to be aware of - which kernel version you're using and the fuse module included in it. If it supports readdirplus on Fuse, the performance increases quite a bit on read-heavy workloads: http://lwn.net/Articles/532705/ I don't know if CentOS 6.4 has it backported or not, but 6.5 will. Likewise, recent versions of Ubuntu and Fedora with kernel version 3.8+ will have it. -JM ----- Original Message ----- > -----Original Mail----- > From: Jeff McKeon [jeff.mckeon at ashcortechnologies.com] > Sent: 07.10.13 - 16:20:06 > To: gluster-users at gluster.org > > Subject: new to gluster, is this possible? > > > Hello all, > > > > I'm completely new to gluster and want to know if what I'm thinking of > > using it for is possible. > > > > I've got a mail server (iRedMail to be exact) on a OpenSUSE 12.3 that > > stores all mail data in /data. > > > > I would like to put up a clone of this server and, using gluster, create > > > > a master-master replication scheme of the /data directory on both so > > that I have a hot standby should server A go down. > > > > A) is this a legitimate use of Gluster > > Yes. You could also just use a real master-master replication(you describe a > master-slave with hot-standby) where both mailservers are used > simultaneously. > > But you should be aware that performance with small files and GlusterFS is > *really* bad and listing many entries in one folder is really slow. So > Gluster isn't really good for your workload and could be a showstopper, > depending on your needs. > > > B) If A, is there some documentation I can be pointed to to sort it > > out? > > If I remember correctly, there's an article on the setup with GlusterFS in > the iRedMail wiki. You should start looking at that. It should tell you how > you correctly set up the GlusterFS server and clients, configure your server > and iRedMail and a multi-master MX entry in your DNS. I've tested this in a > small setup a while ago but I didn't have the time for a large scale test - > so if you go for it I would really like to hear what performance and > responsiveness of a real-world installation are like. :) > > > > > -- > > Best Regards, > > > > Jeff > > _______________________________________________ > > Gluster-users mailing list > > Gluster-users at gluster.org > > http://supercolony.gluster.org/mailman/listinfo/gluster-users > _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://supercolony.gluster.org/mailman/listinfo/gluster-users >
