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Re: [Xen-devel] xm create can't find /proc/xen/balloon

To: Michael David Crawford <mdc@xxxxxxxxx>
Subject: Re: [Xen-devel] xm create can't find /proc/xen/balloon
From: Dulloor <dulloor@xxxxxxxxx>
Date: Mon, 11 May 2009 09:00:48 -0400
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Have you mounted xenfs ?

-dulloor

On May 11, 2009, at 8:47 AM, Michael David Crawford <mdc@xxxxxxxxx> wrote:

I have the latest git sources of xen, ioemu and linux. I just now did a "git pull" in each just to be sure.

When I do an "xm create" I get:

  Error: [Errno 2] No such file or directory: '/proc/xen/balloon'

Searching the list archives told me that this is most commonly caused by not having enough memory available for the DomU, but I have fixed that.

I'm pretty sure the problem is that the paravirt_ops Linux kernel puts its balloon in sysfs and not procfs. So I applied Jeremy's patch found here:

 http://lists.xensource.com/archives/html/xen-devel/2008-11/msg00358.html

... then rebuilt and rebooted.  But I still get the message.

However, that patch changes a file in xend's sources.

Does xm need a similar patch - or should xm be looking at that same python module in xend's directory? I don't know the codebase well enough to figure it out yet, though I'll be investigating while I await your responses.

Thanks for your help,

Mike
--
Michael David Crawford
mdc@xxxxxxxxx

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