On Sat, Jan 15, 2011 at 05:39:54PM +0530, Gautam wrote:
> Hi Pasi,
> i am targeting xen hypervisor.
>
Ok.
> i have already written one script which manage the work load.
> my script uses xentop command.
>
Feel free to post your script to xen-devel for comments.
> but i wanted to add this features in xen code rather than running an
> outside script.
>
New features should be developed against xen-unstable, ie. Xen 4.1 at this
point.
Xen 4.1 uses the xl/libxl toolstack as the primary toolstack, so you should
make sure your script works with xl/libxl.
Other than that.. post your script as RFC (Request For Comments),
and we'll see how it looks like.
-- Pasi
> On Sat, Jan 15, 2011 at 5:24 PM, Pasi Kärkkäinen <[1]pasik@xxxxxx> wrote:
>
> On Sat, Jan 15, 2011 at 04:59:28PM +0530, Gautam wrote:
> > Automatic live migration means XEN should monitor the workload of
> the
> > machine and user will define the threshold of
> > any parameter say(CPU usage) then if workload cross the threshold
> value
> > then XEN should migrate a virtual machine
> > to the other machine automatically without any user interruption.
> >
> > let me know if you need any further info.
> >
>
> This kind of functionality does not belong to Xen *hypervisor*,
> it should be done from the management toolstack.
>
> If we're talking about traditional [2]xen.org hypervisor then the first
> implementation
> could be a script that monitors the resource usage on all physical
> hosts,
> and executes live migration commands based on the resource usage to
> balance the workloads.
>
> I'm not sure if there's something like this already available for Xen ..
> Remember Xen 4.0 and older versions use the xm/xend toolstack,
> and the upcoming Xen 4.1 will use the xl/libxl toolstack as the primary
> toolstack.
>
> Both xm/xend and xl/libxl toolstack are more focused on single host
> management,
> while the XAPI toolstack in XenServer and XCP (Xen Cloud Platform) has
> multi-host pools.
>
> Which one are you targeting? [3]xen.org hypervisor or XAPI/XCP ?
>
> XAPI toolstack in XenServer/XCP has the concept of "Workload Balancing"
> (WLB),
> which is meant for exactly what you described.
>
> Citrix XenServer includes WLB service, but XCP doesn't, afaik.
>
> See:
> - "XenServer Workload Balancing Administration Tool":
> [4]http://support.citrix.com/article/CTX125365
> - "Configuring XenServer Workload Balancing Settings Using XE Commands":
> [5]http://support.citrix.com/article/CTX125186
>
> There are some thirdparty WLB services available for XCP,
> see for example [6]http://www.xencloudcontrol.com/ and
> [7]http://www.xencloudcontrol.com/DOCS/load-balancer.txt
>
> Are you thinking of writing your own WLB service?
> Hopefully that helps.
>
> -- Pasi
>
> > On Sat, Jan 15, 2011 at 4:54 PM, Pasi Kärkkäinen
> <[1][8]pasik@xxxxxx> wrote:
> >
> > On Sat, Jan 15, 2011 at 02:02:40PM +0530, Gautam wrote:
> > > i am trying to add auto migration feature in XEN.
> > > so is anyone has worked related to migration part.
> > > i need help regarding files related to migration.
> > >
> >
> > Hello,
> >
> > First of all, what do you exactly mean with "automatic live
> migration" ?
> > -- Pasi
> >
> > --
> > Regards
> > Gautam
> >
> >
> >
> > References
> >
> > Visible links
> > 1. mailto:[9]pasik@xxxxxx
>
> --
> Regards
> Gautam
>
>
>
> References
>
> Visible links
> 1. mailto:pasik@xxxxxx
> 2. http://xen.org/
> 3. http://xen.org/
> 4. http://support.citrix.com/article/CTX125365
> 5. http://support.citrix.com/article/CTX125186
> 6. http://www.xencloudcontrol.com/
> 7. http://www.xencloudcontrol.com/DOCS/load-balancer.txt
> 8. mailto:pasik@xxxxxx
> 9. mailto:pasik@xxxxxx
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