Re: Bug#516374 Help with Xen kernel

[Pasi Kärkkäinen <pasik@iki.fi>]

On Tue, Mar 23, 2010 at 03:58:57PM +0100, Markus Hochholdinger wrote:
> Hello,
> 
> > There's a lot of people using Xen and Debian, how is the best solution
> > for a stable (production) kernel? (Xen+Lenny) ? Use the 2.6.32-10-xen
> > sid kernel in production servers?!?
> 
> i use plain lenny for my dom0s and with 4) you're very near to what i use:
> 
> 4b) 64-Bit for domUs is possible with 32-Bit dom0 AND 64-Bit hypervisor!
>  Xen: xen-hypervisor-3.2-1-amd64_3.2.1-2_amd64.deb
>  Dom0: linux-image-2.6.26-2-xen-686 (complete 32-bit userland!)
>  DomU: 2.6.18-686 (*)
>  DomU: 2.6.18-amd64 (*)
> also possible:
>  DomU: linux-image-2.6.26-2-xen-686 (not stable enough for me)
>  DomU: linux-image-2.6.26-2-xen-amd64 (not stable enough for me)
>  DomU: linux-image-2.6.32-4-686 (from testing)
>  DomU: linux-image-2.6.32-4-amd64 (from testing)
>  ..
> 
> (*) 
> ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kernel-2.6.18-164.15.1.el5.src.rpm
> 
> I do NOT install xen-hypervisor-3.2-1-amd64_3.2.1-2_amd64.deb but i 
> do "dpkg -x" and put xen-3.2-1-amd64.gz in /boot/ on my dom0s.
> 
> I'm running 22 dom0s with this setup, and since linux-image-2.6-xen-686 
> (2.6.26-20, october 2009) my dom0s are quite stable, like good old 2.6.18 
> which i used before 2.6.26 lenny dom0 got stable enough for me.
> On this 22 dom0s there are running 122 domUs and a few domUs with different 
> kernels: Ubuntu hardy xen kernel (64-bit), SLES10 xen kernel (64-bit), RHEL5 
> xen kernel (64-bit). But mostly i use 2.6.18 32-bit for my domUs.
> I'm very picky about stability and i have the possibilty to test dom0 and domU 
> kernels on a dev environment with a big load before i use them on production 
> servers.
> Also my needs are stable live migration, so i can shutdown every single dom0 
> for maintenance without interrupting the domUs. Furthermore i need online 
> detach and (re-)attach of block devices so i can grow the filesystem of my 
> domUs while they are running.
> 

Btw what kind of shared storage are you using? 

-- Pasi