On 10/16/2014 06:07 PM, Andrew Cooper wrote:
> 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

FWIW I just tried this again with the Xen4CentOS 4.2.5 packages (same 
kernel), and it works fine -- so this seems to be a regression in Xen / 
libxl / xl somewhere.

Console logs attached.

  -George