[fedora-virt] Newby questions

[Wout Perquin]

Hi All,
My objective is to have four FC12 VMs, with preferable Xen as the
hypervisor.
So far, I installed a vanilla FC12 from the Live-CD, and I got KVM
working.  I used virt-manager to install a FC12 VM from that same
Live-CD, but that failed.  It blocks with message : XT4-fs error (device
dm-0): __ext4_get_inode_loc: unable to read inode block - inode=29634,
block 2077

Concerning Xen, and as part as "yum install xen-kernel xen
virt-manager" , I got in the /boot directory the files xen-3.4.2.gz and
xen-syms-3.4.2.  However I have no idea what to put in /etc/grub.conf to
boot this kernel.  

I hope that when I get the xen kernel booted that I will be able to
install a FC12 VM from the Live-CD.

Any advice on above most welcome.
Thanks, Wout