[Pacemaker] 2-node cluster with shared storage: what is current solution

[Саша Александров]

Hi, everyone!

I have a running cluster on Centos 6.5, with drbd+cman+corosync+pacemaker
1.1.10 (as described in the latest guide). It is running Oracle DB on top
of active/passive drbd resource.

Now, we got shared storage over multipath FC there, so we need to move from
drbd to shared storage. And I got totally confused now - I can not find a
guide on how to set things up. I see two options:
- use gfs2
- use ext4 with sbd

There are some guides on gfs2 in the net, however they all rely on RH set
of cluster related stuff - luci, ricci, rgmanager and whatsoever... Is
there any clue how and what to combine to get things going? How does
pacemaker relate to all these RH tools?

Actually I do not need to access data on both nodes simoultaneously, Oracle
runs on just one node. So, sbd looks like an option - we need to make sure
that when we have no cluster connectivity (but have access to shared
storage) only one node writes to the filesystem. But, again, there are just
some old guides, and there is no sbd listed in 'pcs stonith list'...

Please point me to the right direction.

Thanks in advance,

Alex.
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