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Re: Files System for Clusters

To: lorn_kay@xxxxxxxxxxx (Lorn Kay)
Subject: Re: Files System for Clusters
Cc: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
From: John Cronin <jsc3@xxxxxxxxxxxxx>
Date: Wed, 18 Oct 2000 19:00:35 -0400 (EDT)
> juri.haberland@xxxxxxxxxxxxx wrote:
> 
> >I doubt that drbd, nbd or enbd will help you here because they are >just
> >distributed block devices on which you have to set a filesystem like
> ext2.
> >But ext2 or any other common FS can only be mounted on one node (rw).
> >Sure, you can mount it one one node rw and on the other one ro - but
> >that other one will never see changes because of caching.
> 
> >What you really need is something like NFS or GFS which can be >mounted
> >rw on several nodes.
> >
> >juri
> 
> But NFS does not help with redundancy does it? What if the NFS server goes 
> down?

Have a second NFS server on standby, using heartbeat, FailSafe, or
Piranha-FOS.  Use dual attached storage (or DRBD), and a journalling
file system such as ReiserFS, XFS or JFS (to prevent long fsck on
failover).

-- 
John Cronin


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