[Ocfs2-users] using 2 networks

[Alexei_Roudnev]

What's about integrating OFCVSv2 and heartbeat2? Novell show such system on
last LinuxWorld.

It can be the best idea. Today I saw a few times, when
- we have a few nodes, each have OCFSv2, heartbeat, Oracle RAC, and so on;
- they don't interact;
- in case of failure (disk, network,  so on), different subsystems decided
to fenbce different nodes;
- as a result, they fence each other or themself, and we have all nodes
restarted. I saw it in the lab.

Few scenarios should be taken into account specifically:

(1) All nodes lost conenction to the disk. In this case, there is not any
reason to fence anything - just must wait until some nodes restore
connection;
(2) All nodes lost network conenctivity but still have normal disk
conenction - almost the same - why system can't work (temporary) using disk
heartbeat, or, if it have not pending IO, reconnect to the cluster without
reboot.
(3) In some cases, admin wich to disable OCFSv2 in case of failure vs
rebooting (RAC cluster,m OCFS is used for backups only).


----- Original Message ----- 
From: "Fabio Corazza" <fabio at newbay.com>
To: "Humpherys Philip D Contr 532 CMMXS/CL" <Phil.Humpherys at HILL.af.mil>
Cc: <ocfs2-users at oss.oracle.com>
Sent: Wednesday, October 25, 2006 1:43 PM
Subject: Re: [Ocfs2-users] using 2 networks


> Alexei... you've found new friends.. :-)
>
> Jokes apart, this is already in the OCFS2 wishlist but I don't know if
> the developers are already working on it.
>
>
>
> Fabio
>
> Humpherys Philip D Contr 532 CMMXS/CL wrote:
> > As I understand, Ocfs2's heartbeat is disk-based.  Ocfs2 also requires
> > every node to be on the network.  If a node disappears from the network,
> > ocfs2 fences.  What I'd like to find out is if you can put the nodes on
> > 2 more more networks, say a private network, and configure such that
> > ocfs2 will not fence a node as long as it is visible on 1 of the 2 (or
> > more) networks?
> >
> >
> > ------------------------------------------------------------------------
> >
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>
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