Re: earliest supported kernel is 2.6.32 now
On Mon, 2011-05-16 at 23:42 +1000, Russell Coker wrote:
> On Mon, 16 May 2011, Ian Campbell <firstname.lastname@example.org> wrote:
> > > There is also a cost to running old versions of packages to match the
> > > kernel that you are compelled to use.
> > >
> > > EG if you have a RHEL5 system running as a Xen Dom0 it's probably not
> > > going to be a desired upgrade option to use Debian/Squeeze. As RHEL6
> > > doesn't support Xen Dom0 and RHEL5 doesn't support a Squeeze kernel for
> > > the DomU that leaves no option for a recent Xen kernel with RHEL as
> > > Dom0.
> > You are booting Squeeze using the RHEL5 2.6.18 kernels supplied in /boot
> > or something like that?
> Yes, RHEL5 DomU kernel.
> > In general there is no requirement to reuse the dom0 kernel as your domU
> > kernel, although I appreciate that some hosting providers may add that
> > sort of requirement (or a similar requirement to use one of a blessed
> > set of kernels).
> The above URL describes the requirements for kernels.
As Bastian points out this is for dom0 only. For domU there is
> > If you administer dom0 though you can usually use the actual Squeeze
> > kernel even for a RHEL5 based dom0. For example by using p[yv]grub, or
> > alien to install the .deb as a .rpm or even just by extracting the
> > vmlinuz file from the .deb and dropping it in /usr/local/.
> I've tried that and it didn't recognise the kernel. Nothing worked with a
> Squeeze kernel without getting a Squeeze Xen kernel.
> If you have it working then please tell us the exact versions of the Xen,
> RHEL, and Debian kernels in question as well as the architecture it was
> running on.
It's more a general principal that this sort of thing _should_ work and
if it doesn't we would like to hear about the specifics.
Red Hat's own documentation describes how to install PV RHEL 6 (which
uses a 2.6.32 kernel like Squeeze does) on a RHEL 5 host:
Current Noise: Mono - Burial At Sea
It is impossible for an optimist to be pleasantly surprised.