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Re: [Xen-devel] QLogic Fibre Channel HBA Support

To: Wim Coekaerts <wim.coekaerts@xxxxxxxxxx>
Subject: Re: [Xen-devel] QLogic Fibre Channel HBA Support
From: Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>
Date: Mon, 05 Jul 2004 21:22:33 +0100
Cc: Steve Traugott <stevegt@xxxxxxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxxx, Ian.Pratt@xxxxxxxxxxxx
Delivery-date: Mon, 05 Jul 2004 21:23:59 +0100
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In-reply-to: Your message of "Mon, 05 Jul 2004 11:48:42 PDT." <20040705184842.GH9217@xxxxxxxxxxxxxxxxxxxxxxxx>
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> being able to share devices across domains in interesting... 
> in particular for us ... I would hope that it will be possible to do at
> some point.  

There should be no problem with multiple writer sharing of
devices across domains. Of course, make sure you're using a file
system that expects this (e.g. GFS) otherwise you'll trash the
file system for sure!

Xen 1.2 supported this too, but the control tools deliberately
made it hard to do (you had to enable 'expert mode') otherwise
people would accidentally try sharing ext2/3 file systems and end
up trashing them. 


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