Re: Files System for Clusters

["Lorn Kay" <lorn_kay@xxxxxxxxxxx>]

I?d rather find a software solution that leverages the existing cluster 
hardware (ie, the inexpensive disk drives I?ve already got connected to the 
real servers) instead of purchasing a network appliance, or locally 
attaching devices to all the nodes in the cluster.
How does Ultra Monkey solve the cluster file system problem? (I guess 
Piranha?s solution is not out yet?)
Someone on this list said CODA is not ready for prime time? Can you share 
your experience why? The CODA web page says, ?Perhaps Coda can become a 
popular, widely used and freely available distributed file system.? That 
sounds good.
-K


> From: Joseph Mack <mack.joseph@xxxxxxx>
> To: John Cronin <jsc3@xxxxxxxxxxxxx>
> CC: Lorn Kay <lorn_kay@xxxxxxxxxxx>, lvs-users@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: Files System for Clusters
> Date: Thu, 19 Oct 2000 11:07:04 -0400
>
> John Cronin wrote:
>
> > >
> > > But NFS does not help with redundancy does it? What if the NFS server 
> goes
> > > down?
> >
> > Have a second NFS server on standby,
>
> someone else on this list is the expert on this...
>
> the file handles that nfs generates are derived from the location of the 
> file on
> the disk.
> File handles for the same file on different disks/machines will be 
> different.
> When you failover nfs backend-servers, the clients will get stale file 
> handles.
> Joe
>
> --
> Joseph Mack PhD, Senior Systems Engineer, Lockheed Martin
> contractor to the National Environmental Supercomputer Center,
> mailto:mack.joseph@xxxxxxx ph# 919-541-0007, RTP, NC, USA
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