From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: Bug: xl create pv domain with qcow2 disk crashes
 dom0
Date: Thu, 16 Oct 2014 18:07:01 +0100
Message-ID: <543FFB35.8050404@citrix.com>
References: <CAFLBxZbO6mzcVyCkr3vDoiimnA0iGvkWpTb73Kvkg0o0QLYxzA@mail.gmail.com>
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To: George Dunlap <George.Dunlap@eu.citrix.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
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On 16/10/14 18:02, George Dunlap wrote:
> System RAM resource [mem 0x48000000-0x4fffffff] cannot be added
>
> xen_balloon: reserve_additional_memory: add_memory() failed: -17
>
> WARNING: g.e. 0x13 still in use!

At a glance, I suspect that this is the root of the problem.  An
-EEXISTs in the balloon driver, and perhaps a buggy error path?

~Andrew