Re: Rgmanager and Xen VMs

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On Mon, 2009-08-17 at 16:51 -0700, Christopher Chen wrote:
> Hi there--
> 
> I'm wondering about the behavior of rgmanager with regards to Xen VMs
> and memory planning.

There isn't any "planning".

> I see there's a memory parameter defined in vm.sh. Does cluster
> manager take this into account when trying to start up guests? Right
> now it's undefined so my rgmanager will try to start up guests in the
> order defined for the failover domain--of course, at some point, VMs
> fail to start when the first Dom0's free memory gets too low, then
> they get started on the next machine, and so on...

We moved to using 'virsh' instead of 'xm', which will in theory allow us
to fix migration/start issues when memory is too low, but there's
currently no best-fit algorithm.

-- Lon

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