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Re: [Xen-devel] Automation load balancing through live migration of virt

To: Gautam <gautamnitc@xxxxxxxxx>
Subject: Re: [Xen-devel] Automation load balancing through live migration of virtual machine.
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Sat, 12 Feb 2011 22:35:14 +0200
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, "xen.org" <ian.jackson@xxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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On Sat, Feb 12, 2011 at 12:37:01PM -0500, Gautam wrote:
>    Hi All,
>    i want to add the automatic support for load balancing in the xen through
>    live migration of virtual machine.
>    for this i wrote a script, which runs as a daemon process with xen and if
>    the reosurces utilization (like Memory or CPU usage) exceeds
>    the threshold value then it migrates the virtual machine to the other
>    server.
>    but my script runs over the XEN. i am planing to make insert this code in
>    xen code.
>    so please suggest me the guide line to work with xen code.

I believe this kind of functionality should be a script/daemon,
like you have implemented it now.

xm/xend and xl/libxl toolstack are "single host" anyway,
so they don't really know anything about other hosts.

XAPI toolstack used in XCP (and in Citrix XenServer) has
multi-host pools, but I believe this kind of functionality
already exists there, and can be implemented as plugins.

-- Pasi

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