Aren't upgrades demanding too much restarts?

[kalinix]

On Wed, 2010-09-01 at 21:31 +0100, Timothy Murphy wrote:
> kalinix wrote:
> 
> > ksplice works only for kernels. And make several modules out of the
> > deltas between the kernel release, which will be loaded in the older
> > kernel. So you'll end up with, let's say 2.6.33.6-147 and a bunch of
> > modules covering the patches up to the 2.6.33.8-149. Technically you are
> > at 2.6.33.8-149. Practically you still run 2.6.33.6-147 (with
> > improvements :) ).
> 
> What exactly is ksplice meant to do?
> I yum-installed it today, 
> and then ran "yum update" which installed a new kernel.
> I expected this to start running, but it didn't.
> Admittedly I didn't read any instructions.
> 
> 
> -- 
> Timothy Murphy  
> e-mail: gayleard /at/ eircom.net
> tel: +353-86-2336090, +353-1-2842366
> s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland
> 

ksplice and yum update are two entirely different things. Let's say you
are running kernel 2.6.33.6-147: yum update downloads and install the
latest kernel release of your vendor of choice (e.g. Fedora's kernel
2.6.33.8-149) from your vendor's repository; ksplice update downloads
only deltas between 2.6.33.6-147 and 2.6.33.8-149, compiled as modules,
and apply them on the current running kernel. The deltas are downloaded
from ksplice site, therefore are compiled by them.
So if you ran yum update you just downloaded and installed the latest
Fedora kernel, which needs reboot. 

-- 


Calin

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