Feature proposal: Rebootless Installer

[Jarod Wilson]

On Tuesday 14 July 2009 11:50:06 Richard W.M. Jones wrote:
> On Tue, Jul 14, 2009 at 09:27:08AM -0600, Douglas McClendon wrote:
> > As with a current LiveOS installation, the installation media kernel is  
> > the running kernel.  Even if the f11 installer already allows you to  
> > trigger a chrooted yum update as part of the install, you won't be  
> > running the updated kernel until after a reboot.
> 
> Is it the case that the installation kernel is always UP,
> whereas the real kernel would probably be SMP nowadays?

On everything but ppc32, we don't even ship an UP kernel any longer,
the base kernel used by the installer *is* an SMP kernel.

> > ... Same as RebootlessInstaller ... until ksplice ...
> 
> I don't think ksplice changes things -- it seems to only work for very
> minor kernel patches.  For example, any change to the layout of a
> kernel structure would appear to be incompatible with ksplice.  Thus
> it seems highly unlikely it'll ever work in its current form for
> arbitrary kernel revisions.

Trying to ksplice from 2.6.29.4 in the installer to say 2.6.30.1 or even
to 2.6.31 does sound like massive fail...

-- 
Jarod Wilson
jarod at redhat.com