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

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Subject: [Xen-devel] xm create can't find /proc/xen/balloon
From: Michael David Crawford <mdc@xxxxxxxxx>
Date: Mon, 11 May 2009 05:47:54 -0700
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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
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Michael David Crawford
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