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[Xen-devel] RE: ip=x.y.z.w in config file ends up in pv guest /proc/cmdl

To: dan.magenheimer@xxxxxxxxxx, "Xen-Devel (E-mail)" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] RE: ip=x.y.z.w in config file ends up in pv guest /proc/cmdline (but not in xen 3.3)
From: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
Date: Wed, 8 Apr 2009 15:42:24 +0000 (GMT)
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If anyone is interested, I tracked this down (with
some help from Zhigang Wang) to a recent change in
pygrub.  This one, I think:

http://xenbits.xensource.com/xen-unstable.hg?rev/596f21d901f3

Substituting the xen-unstable /usr/bin/pygrub into
a xen-3.3.1 toolset provides the same functionality.

> -----Original Message-----
> From: Dan Magenheimer 
> Sent: Wednesday, April 01, 2009 4:34 PM
> To: Xen-Devel (E-mail)
> Subject: ip=x.y.z.w in config file ends up in pv guest /proc/cmdline
> (but not in xen 3.3)
> 
> 
> I found that if you specify ip="ip_address" in
> a PV config file, when the PV guest comes up,
> /proc/cmdline contains the ip= (and some other
> stuff).  Cool!  With minor init script mods, it's
> now possible to "configure" a network interface
> with an ip specified in the config file, thus
> making it easier to "clone" VMs.
> 
> I was then disappointed to find that this feature
> (bug fix?) isn't in xen 3.3, just in xen-unstable.
> 
> Can someone point me to the patch that made this
> new feature work?  If it's not too interdependent
> with other stuff, I might try to backport it.
> 
> Thanks,
> Dan
>

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