Xen users - Jul 2008 - Xen boot problem with normal kernel on DomU(newbie question)

hi all,



installed oracle linux 5.1 as DomU guest in Dom0(rhel5, xen 3.0) with storage
configured using lvm.



following config file to install guest:



kernel = "/xenImg/oracle51xen/vmlinuz"

ramdisk = "/xenImg/oracle51xen/initrd.img"

memory = 256

name = "oracleos5.1"

vif = [ ''mac=00:16:3e:01:26:33, bridge=xenbr0'' ]

disk = [ ''phy:vg01/xenrootvol,xvda,w'' ]

extra="askmethod text"



following config file to start guest:

memory = 256

name = "oracleos5.1"

vif = [ ''mac=00:16:3e:01:26:33, bridge=xenbr0'' ]

disk = [ ''phy:vg01/xenrootvol,xvda,w'' ]

bootloader="/usr/bin/pygrub"



now, when i start guest using second config file, oracle linux has three kernel
mentioned:

Enterprise Linux-pae (2.6.18-53.el5PAE)

Enterprise Linux-xen (2.6.18-53.el5xen)

Enterprise Linux-base (2.6.18-53.el5)



only 2(xen) entry work other(1,3), show Error: (22, ''Invalid
argument'').

Is it mean that only xen kernel can be booted on to a DomU or am i
doing something wrong. Am i doing any mistake here or this is
limitation of xen as compared to vmware.



thanks, 

rajnish


      

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On Tuesday 22 July 2008, rajnish kumar wrote:
> Is it mean that only xen kernel can be booted on to a DomU or am i
> doing something wrong. Am i doing any mistake here or this is
> limitation of xen as compared to vmware.
this is one aspect in which Xen is fundamentally different from VMWare; so you 
can''t say if it''s a limitation or a feature :-)

in short: your setup is for a paravirtualized guest, so you need a 
paravirtualized kernel.  if you want to use a ''normal'' kernel,
you have to
use "full virtualization" (a.k.a HVM) 

you can say that''s a limitation of Xen, or a limitation of VMWare,
since it
only does full virtualization.


-- 
Javier


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