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Re: Shared Devices with XFS

To: XFS List <linux-xfs@xxxxxxxxxxx>
Subject: Re: Shared Devices with XFS
From: Michael Loftis <mloftis@xxxxxxxxx>
Date: Thu, 27 May 2004 13:10:41 -0600
In-reply-to: <40B5D5CB.7020702@opticalart.de>
References: <40B5D5CB.7020702@opticalart.de>
Sender: linux-xfs-bounce@xxxxxxxxxxx
Unless the filesystem is designed for it (like GFS) 100% chance of crashes, data integrity and other problems.

--On Thursday, May 27, 2004 13:49 +0200 Frank Hellmann <frank@xxxxxxxxxxxxx> wrote:

Hi Guys!

Sorry to be a bit Off-Topic, but unfortunatly I can't test this out by

I am checking out a way to speed up data-transfers between a server and a
couple of clients. A fullblown SAN (CXFS etc) approach is currently not
in our budget, but we already have a couple of directly attached
fibre-channel diskarrays here. I will buy a FC-switch to get the arrays
easily switched over to the clients to speed up things (instead of
copying over network).

Now, my question: What will happen if I configure the FC-switch to route
a single diskarray to all machines, mount that device read-write on the
server and read-only on the clients? Will XFS allow me to do that? How
propable is non-integrity data on the clients (considering that the
server won't write to that device at that time anymore)? What will happen
if all clients strom out to get data at the same time?

        Thanks a lot. Cheers,
Frank Hellmann          Optical Art GmbH           Waterloohain 7a
Digital Cinema          http://www.opticalart.de   22769 Hamburg
frank@xxxxxxxxxxxxx     Tel: ++49 40 5111051       Fax: ++49 40 43169199

-- Undocumented Features quote of the moment... "It's not the one bullet with your name on it that you have to worry about; it's the twenty thousand-odd rounds labeled `occupant.'" --Murphy's Laws of Combat

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