Re: [Hampshire] Emulating a cluster with QEMU?

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Author: Hugo Mills
Date:  
To: Hampshire LUG Discussion List
Subject: Re: [Hampshire] Emulating a cluster with QEMU?

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gpg: failed to create temporary file '/var/lib/lurker/.#lk0x58171100.hantslug.org.uk.27933': Permission denied
gpg: keyblock resource '/var/lib/lurker/pubring.gpg': Permission denied
gpg: Signature made Thu Mar 13 13:06:40 2008 GMT
gpg: using DSA key 20ACB3BE515C238D
gpg: Can't check signature: No public key
On Thu, Mar 13, 2008 at 01:00:22PM +0000, Richard Danter wrote:
> On 13/03/2008, Hugo Mills <hugo@???> wrote:
> > On Thu, Mar 13, 2008 at 12:29:39PM +0000, Richard Danter wrote:
> > > With all this virtualisation talk I was wondering if anyone has tried
> > > running multiple instances of QEMU on one host simultaneously?
> >
> >
> >    Yes, I routinely run two or three qemu (KVM) instances on my
> >  laptop.

>
> Does KQEMU work just as well?


I've had multiple kqemu instances running on my server at home, but
not for long. Seemed stable.

> > > Obviously performance is not going to be great, but I just don't have
> > > 8 PC's sitting round at the moment. :o(
> >
> >    What exactly are you trying to do with this setup? Why do you need
> >  8 separate machines?

>
> I want to emulate a rack system. In that system there are up to 8
> blades. Two blades have HDD's with a replicated filesystem for
> redundancy. The remaining blades mount their roots from one of these
> two blades currently using NFS. I want to experiment with iSCSI, DRBD,
> CLVM, EVMS, GFS, OCFS2, ... and since the hardware is rather expensive
> I was wondering if QEMU would be a suitable alternative. I don't want
> to use VMware or Xen as not all the blades are x86.


Sounds fun. (for arbitrary values of $FUN) :)

Hugo.

-- 
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
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