Re: [PATCH]: xl: use libuuid to generate random UUID's

From: Vincent Hanquez <vincent.hanquez@eu.citrix.com>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>,
	Ian, Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>,
	Jackson <Ian.Jackson@eu.citrix.com>,
	Ian Pratt <Ian.Pratt@eu.citrix.com>,
	Xen Devel <xen-devel@lists.xensource.com>,
	"Gianni Tedesco (3P)" <gianni.tedesco@citrix.com>
Subject: Re: [PATCH]: xl: use libuuid to generate random UUID's
Date: Tue, 10 Aug 2010 12:14:19 +0100	[thread overview]
Message-ID: <4C61348B.6000000@eu.citrix.com> (raw)
In-Reply-To: <1281437086.24292.3882.camel@zakaz.uk.xensource.com>

On 10/08/10 11:44, Ian Campbell wrote:
> Where I care about a stable MAC I use
> 	vif = [ 'mac=xx:xx:xx:xx:xx:xx' ]
> in my domain config file. AFAICT that is the only 100% reliable way to
> get a stable MAC address since the other schemes all have some corner
> case or other...

At the expense of the common error of having 2 vms with the same mac 
address because one copied the config file and forgot to change the mac 
address.

XCI and XCP doesn't have any "corner cases or other" since uuid uniquess 
is enforced which means mac too (siding apart the unlikely hash collisions).

-- 
Vincent