Re: [Xen-users] Problem in updating linux kernel in a remote xen virtual machine

[Sadique Puthen <sputhenp@xxxxxxxxxx>]

hxsrmeng wrote:
> Hi friends,
>
> I'd like to update a linux kernel in a remote xen virtual machine but
> met a problem.
>
> The currently working kernel in that xen VM is linux-2.6.16.46-0.12, the
> local version is "-xen".
>
> I added one module, several kernel hacking options, and change the local
> version to "-mine". After recompiling, I set this "-mine" kernel as my
> default one in /boot/grub/menu.lst.
>
> But the remote xen VM always boots with the original "-xen" kernel,
> ignoring the "default" setting in the menu.lst. (I have not yet the
> graphic access to the VM and host). Also I can not "modprobe" the module
> I added.
>
> So, I don't know what's wrong. Is there any difference in updating
> kernels in VM? Or is there any general setting to set which kernels a VM
> can boot with?
>
> Thank you so much.
>
> BTW, when doing kernel recompiling, I did
>
> #make menuconfig
> #make clean
> #make 
> #make modules_install install
> At this point,
> System.map-2.6.16.46-0.12-mine
> config-2.6.16.46-0.12-mine
> vmlinux-syms-2.6.16.46-0.12-mine
> vmlinuz-2.6.16.46-0.12-mine
>
> were generated and copied to /boot automatically, but no
> initrd-2.6.16.46-0.12-mine. I had to use "mkinitrd" to generate it.Also,
> the "-mine" entry in the menu.lst need to be added manually. 
>   
It might be true that you are not loading the guest kernel from domu 
filesystem via pygrub. You may be passing the guest kernels from dom0 by 
specifying kernel = and ramdisk = parameter in the guest configuration 
file. If that is the case recompiling the kernel inside the guest 
wouldn't take effect.
How does your guest configuration file look like?

--Sadique
> Thank you again.
>
>
>
>
>  
>
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>   

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