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Re: [Xen-users] Strange Xen arithmetic ("Error creating domain: I need 6

To: Stephane Bortzmeyer <stephane@xxxxxxxxxxx>
Subject: Re: [Xen-users] Strange Xen arithmetic ("Error creating domain: I need 65 MiB, but dom0_min_mem is 196...")
From: Anthony Liguori <aliguori@xxxxxxxxxx>
Date: Mon, 30 Jan 2006 22:45:50 -0600
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Modify the dom0_min_mem entry in /etc/xen/xend-config.sxp to from 196 to 64.

Regards,

Anthony Liguori

Stephane Bortzmeyer wrote:

I run Xen 3.0, dom0 is a Debian "sarge" with kernel 2.6.12.6. I can
start the first domU (I tried with several guests OS) but the second
always fail:

aslan:/etc/xen % sudo xm create gentoo-diggory.cfg -c
Using config file "gentoo-diggory.cfg".
Error: Error creating domain: I need 65 MiB, but dom0_min_mem is 196 and 
shrinking to 196 MiB would leave only -85 MiB free.

The box has only 196 Mb of RAM. dom0 received 48 Mb (and I can check
with "free" that it is indeed the case). Each domU is configured for
64 Mb so I believe that 48 + 64 + 64 < 196. but Xen seems to think
otherwise and display this strange sentence above.

Any idea?


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