xen in FC5 install

[Avi Kivity]

Russell Coker wrote:
> I have performed a basic FC5 install for the purpose of texting Xen.  The 
> machine is a Compaq Evo P4-1.5GHz with 384M of RAM.
>
> http://jailtime.org/download:centos:v4.3
>
> I downloaded a CentOS 4.3 Xen image from the above URL for the purpose of 
> testing, the CentOS image in question was designed for 128M of RAM so should 
> run nicely on a machine with 384M.
>
> kernel = "/boot/vmlinuz-2.6.15-1.2054_FC5xenU"
> memory = 128
> name = "centos.4-3"
> dhcp = "dhcp"
> disk = ['file:/xen/centos.4-3.img,sda1,w', 'file:/xen/centos.swap,sda2,w']
> root = "/dev/sda1 ro"
>
> Above is the contents of my /etc/xen/centos config file.  Below are the errors 
> I get in my /var/log/xend-debug.log file.  The command "xm create -c centos" 
> gives the error "Error creating domain: The privileged domain did not 
> balloon!".
>   
domain 0 grabbed all of memory and isn't letting it go. try adding

   dom0_mem=128000

to the end of the kernel line in /etc/grub.conf (saying kernel /xen.gz 
...) and rebooting. I'd suggest going to runlevel 3 to avoid starting up 
X with so little memory.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.