NFS cluster with OCFS2 + Quota + DRBD

jirikmik · 04-03-2011, 10:06 AM

Hello,

I trying to configure 2 node NFS cluster on Redhat, but GFS2 is unusable very very slow for me (after all tunings of cman startup etc.). So I try to configure OCFS2. Problem is that it includes quotas from 1.6, so I must use Oracle Linux with its "Unbreakable Kernel". But this kernel and distro does not support DRBD (I think).

Any solution to run OCFS2 with quotas on RHEL/Centos (and something similar)?

Thanks, J.

wpeckham · 04-03-2011, 02:42 PM

A link to a comparison of features and performance might serve. None of the ones I have found are recent, many are obviously non-objective. Can anyone provide a link suggestion?

I have used DRBD, but ran into some problems with its behavior. None of my project are urgent, but I am sure that jirikmik and I are not the only ones that would benefit by an evaluation of alternatives.

ffrank · 04-04-2011, 07:58 AM

As far as high availability is concerned, DRBD is the best backend I have used.
The DRBD guys recommend both OCFS2 and GFS, as far as I know.

You may want to take a look at Gluster instead of NFS+GFS, but a collegue tells me that our proof of concept revealed problems. It's not production grade for us yet.

Concerning DRBD availability, even if it's not included in your specific kernel flavor (or version), you should be able to build it provided that kernel headers are available.