Re: Automatic live migration

[Jean Baptiste Favre <xen-devel@jbfavre.org>]

Hello,
You may have a look on Entropy project here:
http://entropy.gforge.inria.fr/

I think this could achieve what you want to do.
Regards,
JB


Le 15/01/2011 13:19, Gautam a écrit :
> Thanks pasi,
> i am planing to inject that script code in xen code.
> what you say about this??
> 
> On Sat, Jan 15, 2011 at 5:45 PM, Pasi Kärkkäinen <pasik@iki.fi
> <mailto:pasik@iki.fi>> wrote:
> 
>     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@iki.fi <mailto:pasik@iki.fi>> 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
>     <http://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 <http://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@iki.fi <mailto:pasik@iki.fi>> 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@iki.fi <mailto:pasik@iki.fi>
>     >
>     >    --
>     >    Regards
>     >    Gautam
>     >
>     >
>     >
>     > References
>     >
>     >    Visible links
>     >    1. mailto:pasik@iki.fi <mailto:pasik@iki.fi>
>     >    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@iki.fi <mailto:pasik@iki.fi>
>     >    9. mailto:pasik@iki.fi <mailto:pasik@iki.fi>
> 
> 
> 
> 
> -- 
> Regards
> Gautam
> 
>   
> 
> 
> 
> 
> 
> 
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