[Ocfs2-users] another node is heartbeating in our slot!

[Alexei Roudnev]

 What if they mount the same drive on iSCSI server but using iSCSI to itself
(so it will work as both, server and client, at the same time)?
It should work fine.


----- Original Message ----- 
From: "Mark Fasheh" <mark.fasheh at oracle.com>
To: "Patrick Donker" <padonker at technoware.nl>
Cc: <ocfs2-users at oss.oracle.com>
Sent: Monday, December 18, 2006 10:10 PM
Subject: Re: [Ocfs2-users] another node is heartbeating in our slot!


> On Mon, Dec 18, 2006 at 11:39:49PM +0100, Patrick Donker wrote:
> > Now, as soon as I mount /dev/sdb on 'san' itself, I get the 'another
node is
> > heartbeating in our slot!' message, and the system fences all nodes,
which
> > results in kernel panics. Apparently 'san' is trying to heartbeat on
slot 0,
> > which already is occupied by 'mail'. Looking at the cluster.conf, 'san'
should
> > select slot 1. How come it is trying to use 0 then?
> > Am I correct in assuming that I cannot mount the ocfs2 fs on the system
which
> > is running the cluster???
>
> Yes. The node you export the iscsi drive (your iscsi target, or 'san' in
> this example) can not run ocfs2 on that drive alongside other nodes who
have
> it mounted via the iscsi client. This is a limitation in that the iscsi
> target does not share the same pages against the iscsi device and the
block
> device.
>
> So basically, the machine which runs the iscsi target software cannot also
> run the file system. All nodes mounting it via the iscsi client should
work
> fine. For what it's worth, mounting on the iscsi target alongside iscsi
> targets won't work with _any_ shared disk cluster file system.
> --Mark
>
> --
> Mark Fasheh
> Senior Software Developer, Oracle
> mark.fasheh at oracle.com
>
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