I have been running xen for about a week on a FC5 host running a FC5 guest with great sucess.  I just did a "yum update" on the host system and when I try to start the guest I now see this:

 

[root@localhost xen]# xm create -c WebServer1
Using config file "WebServer1".
Going to boot Fedora Core (2.6.16-1.2096_FC5xenU)
  kernel: /vmlinuz-2.6.16-1.2096_FC5xenU
  initrd: /initrd-2.6.16-1.2096_FC5xenU.img
Error: Error creating domain: I need 513 MiB, but dom0_min_mem is 256 and shrinking to 256 MiB would leave only 2780 MiB free.

 

I am not really sure if this error message make sense, if I have 2780 I should have more then enough for 513 for a guest OS ... am I reading this right?  Any ideas?

 

I have tried a "xm mem-set Domain-0 1024" to see if it made a difference, but it didn't.

 

Thanks,

-Bob