[Ocfs2-users] re: how should ocfs2 react to nic hardware issue

[Alexei_Roudnev]

One of possible ideas (which I am thinking to implement is):

- use Loopback interface for the service access and for the o2cb
- use OSPF protocol (ospfd) to route it inside the network (so it will be
avaliable thru any of eth0 or eth1). OSPF have a very low convergence time,
so it wil change routing quickly if interface failed.
- because it is IP leyer routing and not switch layer bonding, it is very
reliable method.

But I never had a time to try it.


----- Original Message ----- 
From: "Peter Santos" <psantos at cheetahmail.com>
To: <ocfs2-users at oss.oracle.com>
Sent: Thursday, November 30, 2006 12:30 PM
Subject: [Ocfs2-users] re: how should ocfs2 react to nic hardware issue


> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> guys,
> I'm trying to test how my 10gR2 oracle cluster (3 nodes) on SuSe reacts to
a network card hardware failure.
> I have eth0 and eth1 as my network cards, I took down eth0 (ifdown eth0)
to see what would happen and
> I didn't get any reaction from the o2cb service. This is probably the
correct behavior since my
>   /etc/ocfs2/cluster.conf uses eth1 as the connection channel?
>
> If I take down eth1 I suspect o2cb will eventually reboot the machine
right? I'm not using any bonding.
>
> My concern is that when I took down eth0, I had a user logged into the
instance and everything just "hung" for
> that user, until I manually took down the instance with "SRVCTL"... then
the user connection failed over to
> a working instance.
>
> Anyway, just trying to get some general knowledge of the behavior of o2cb
in order to understand
> my testing.
>
> - -peter
>
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.1 (GNU/Linux)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
>
> iD8DBQFFbz9Soyy5QBCjoT0RAiqvAJ40UCXsV/4Zdv19a246ByzNL4CiwgCfX704
> +BZwa23LphG878FP/5fQKek=
> =Nhcz
> -----END PGP SIGNATURE-----
>
> _______________________________________________
> Ocfs2-users mailing list
> Ocfs2-users at oss.oracle.com
> http://oss.oracle.com/mailman/listinfo/ocfs2-users
>