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RE: [Xen-devel] migration

To: <Ian.Pratt@xxxxxxxxxxxx>
Subject: RE: [Xen-devel] migration
From: "James Harper" <JamesH@xxxxxxxxxxxxxxxx>
Date: Fri, 1 Oct 2004 21:14:33 +1000
Cc: <xen-devel@xxxxxxxxxxxxxxxxxxxxx>
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Thread-topic: [Xen-devel] migration
> 
> It's certainly believed to work, but it's not been widely tested.
> 
> I've done hundreds of migrations of domains running loaded 
> databases and web servers, and it works for me. 

Me too, I followed up to this email saying that the cause of both issues
I had was most likely because my eth0 barfed.

> 'xm migrate' on its own does a stop-and-copy migrate. Adding 
> the '-l' flag makes it a live migrate where the OS isn't stopped. 

Thought it might be something like that.

> Live migration is a lot more "exciting" from an 
> implementation point of view than stop-and-copy, so if you do 
> have bug reports it would be very useful to know whether you 
> can repeat them in stop-and-copy mode. 

I was logged in the whole time and there was about 1/2 a second where it
seemed to freeze, but no bugs to report.

> NB there are a few migration fixes that are in unstable that 
> haven't been pushed through to 2.0 yet. 

I'm running unstable built today.

James


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