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Re: [Xen-users] Not enough RAM for domain 0 allocation (512G RAM / 64CPU)

Hi Juergen ,

Actually i've updated my system (Fedora22) and it starts to work.

Thank you for the answer.


On Mon, Sep 7, 2015 at 12:43 AM, Juergen Gross <jgross@xxxxxxxx> wrote:
On 09/04/2015 06:08 PM, Leandro Mendes wrote:
Hi guys,

I have a DELL R820 (64CPU 512GRAM) and i can't boot XEN (4.5) and Kernel
4.0.4 (Fedora Server 22)

I got the following error:

(XEN) ****************************************
(XEN) Panic on CPU0 0:
(XEN) Not enough RAM for domain 0 allocation
(XEN) ****************************************

Tried to boot with the following options:

mem=512G dom0_mem=512MÂ => No panic, but reboot after it loads Xen
mem=512GÂ Â Â Â Â Â Â Â => Panic
dom0_mem=max:32GÂ Â Â Â => No panic, but reboot after it loads Xen

Do you guys have any idea about what's wrong?

Can you provide a full log of the console messages, please? Please use
the additional hypervisor boot options:

loglvl=all guest_loglvl=all sync_console

Just in case you haven't done that: you'll probably need to set up a
serial console to get the console log, please see


for how to do this.


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