Re: [Xen-users] Upgrading Guest Kernel

[Gabor Hudiczius <ghudiczius@xxxxxxxxx>]

Hi,

> If I understand your suggestions above, that means that the ISP must
> make any kernel image changes?  Is there no way I can "do it myself"?
it depends whether your vm is set up to use pygrub, or not.
if it is, you can make any neccessary change within the guest, which are:
 - download/compile a kernel (or precompiled kernel image)
 - move it to your boot directory, amd move the modules to their place 
in /lib (according to kernel version)
 - create a grub config file (/boot/grub/menu.lst)
 - create grub entries for each kernel you want to use, like the following:

title           Some Linux Kernel
root            (hd0,0)
kernel          /boot//boot/vmlinuz-3.2.0-33-generic-pae root=/dev/xvda1
initrd          /boot/initrd.if.you.have.one

on the next reboot, you should see the pygrub boot loader menu (if you 
connect quick enough via vnc)
if your provider does not use pygrub, you will need to contact them to 
change your kernel
> Must the "host" and "guest" run the same kernel version?
no, they don't

regards,
gabor

p.s.: this information is for pv guests, i'm not sure about hvm ones

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