No xen rawhide boot images

[Orion Poplawski]

No more os/images/xen in rawhide.  Is this intentional?  I'm not having 
any luck using the pxeboot images with xen.

-- 
Orion Poplawski
Technical Manager                     303-415-9701 x222
NWRA/CoRA Division                    FAX: [phone]
3380 Mitchell Lane                  orion(a)cora.nwra.com
Boulder, CO 80301              http://www.cora.nwra.com

[Jarod Wilson]

Orion Poplawski wrote:
>  No more os/images/xen in rawhide.  Is this intentional?  I'm not
> having 
>  any luck using the pxeboot images with xen. 
kernel-xen was mercifully finally put to rest. The kernel-PAE.i686 and 
kernel.x86_64 packages now provide xen guest capabilities. No clue how one is 
supposed to actually *install* those yet, mind you... :)

May well be that we need some compat symlinks or something to function with 
virt tools that expect the kernel and initrd to be in os/images/xen/.


-- 
Jarod Wilson
jwilson(a)redhat.com

[Jeremy Katz]

On Wed, 2008-08-06 at 14:17 -0600, Orion Poplawski wrote:
>  No more os/images/xen in rawhide.  Is this intentional?  I'm not
> having 
>  any luck using the pxeboot images with xen. 
This is part of the transition to not having a kernel-xen.
Unfortunately, the paravirt opts bits that are used for Xen domU support
are only functional with kernel-PAE on i686 (and not in the i586 kernel
at all).  So the finagling to switch images/xen for i686 will be coming
back soon, but with kernel-PAE bits instead of kernel-xen (*sigh*)

Jeremy

[Roland McGrath]

>  Unfortunately, the paravirt opts bits that are used for Xen domU
> support
>  are only functional with kernel-PAE on i686 (and not in the i586 kernel
>  at all).  So the finagling to switch images/xen for i686 will be coming
>  back soon, but with kernel-PAE bits instead of kernel-xen (*sigh*) 
Is this really a new special case?  Or can it just be part of the generic
"what kernel is right for this hardware?" choice that picks PAE/smp now?
(There is something like that, right?)  When the "hardware" is paravirtual,
that's just a particular flavor of "hardware" for which there is a right
kernel.

[Jeremy Katz]

On Wed, 2008-08-06 at 14:04 -0700, Roland McGrath wrote:
>  > Unfortunately, the paravirt opts bits that are used for Xen domU
> support
>  > are only functional with kernel-PAE on i686 (and not in the i586 kernel
>  > at all).  So the finagling to switch images/xen for i686 will be coming
>  > back soon, but with kernel-PAE bits instead of kernel-xen (*sigh*)
>  
>  Is this really a new special case?  Or can it just be part of the generic
>  "what kernel is right for this hardware?" choice that picks PAE/smp now?
>  (There is something like that, right?)  When the "hardware" is paravirtual,
>  that's just a particular flavor of "hardware" for which there is a right
> kernel. 
It's a changed special case more than a new special case for selection,
yes.  Although it'd be really nice to get rid of PAE vs non-PAE, much
like we got rid of smp vs non-smp.

But for _booting_, real hardware can boot and run the i586 kernel.  Xen
PV guests can *only* boot the PAE kernel.  That's what makes this a new
and different special case.

Jeremy

[Roland McGrath]

>  It's a changed special case more than a new special case for
> selection,
>  yes.  Although it'd be really nice to get rid of PAE vs non-PAE, much
>  like we got rid of smp vs non-smp. 
The internals to make that possible are significantly more of a pain in the
ass than the SMP case was.  I suspect it won't ever happen.  What will
probably happen is that eventually no non-PAE mode is optimal on non-ancient
hardware, so i686 always being PAE and i586 being non-PAE will be what to do.

>  But for _booting_, real hardware can boot and run the i586 kernel. 
> Xen
>  PV guests can *only* boot the PAE kernel.  That's what makes this a new
>  and different special case. 
Gotcha.

[Daniel P. Berrange]

On Wed, Aug 06, 2008 at 02:17:39PM -0600, Orion Poplawski wrote:
>  No more os/images/xen in rawhide.  Is this intentional?  I'm not
> having 
>  any luck using the pxeboot images with xen. 
Yes, kernel-xen is dead. Two things need to happen to make xen installs
work again

 - The .treeinfo file needs the 'images-xen' section added back
   pointing to the reglar PXE kernels.
 - On i386 only, we'll need to provide alternate PAE enabled
   PXE kernels images and point to that instead


Daniel
-- 
|: Red Hat, Engineering, London   -o-   http://people.redhat.com/berrange/ :|
|: http://libvirt.org  -o-  http://virt-manager.org  -o-  http://ovirt.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505  -o-  F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

[Mark McLoughlin]

On Wed, 2008-08-06 at 14:17 -0600, Orion Poplawski wrote:
>  No more os/images/xen in rawhide.  Is this intentional?  I'm not
> having 
>  any luck using the pxeboot images with xen. 
Jeremy explained it already, but here's the bug:

  https://bugzilla.redhat.com/456559

Hopefully we'll have this sorted in the next couple of days.

In the meantime, you should be able to use the pxeboot images on x86_64.
Have you tried that?

Cheers,
Mark.