RE: [Xen-users] Xen 3.1.0 initrd and kernel building

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Nico Kadel-Garcia
> Sent: 29 June 2007 10:52
> To: Miguel Araujo
> Cc: amin; Mark Williamson; xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Xen 3.1.0 initrd and kernel building
> 
> Miguel Araujo wrote:
> > Nico Kadel-Garcia escribió:
> >> Jordi Espasa Clofent wrote:
> >>> Hi all,
> >>>
> >>> Sorry in advance for this dummy question, but I don't 
> found any doc 
> >>> about.
> >>>
> >>> ¿Can I rename the domU? ¿Why?
> >>>
> >> Yes. Shut it down, edit your configuration files, and restart it.
> > And isn't it possible to do it on the air (without shutting down 
> > anything)?
> Ahh. That's more clear. It's certainly not something I've ever looked 
> into: That seems awkward and dangerous, like changing the 
> name of your 
> MySQL databases on the fly.
> 
> Why would you want to?

That's a good question, but should have an urge to rename a domain, there is 
the comment "xm rename" - I didn't try it, but I assume it works, as I presume 
it uses the same python-code that renames the domain during 
save/restore/migrate. 

I guess one reason might be if you are replacing a service of some sort with a 
new VM, and you want to start the new one before you stop the old one. If you 
combine that with a script that tracks a certain name or some such, I guess 
you'd want to do something like:

# xm create my-new-service.cfg
# ... Wait some time ... 
# xm shutdown service.cfg
# xm rename my-new-service service

--
Mats



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