xen discuss - Dec 2008 - Open HA Cluster with HA-xVM guest domains

Hi Everyone,

Just an fyi as I''ve recently recorded a brief (5 minute) demo of Open  
HA Cluster with high availability xVM guest domains.  Please note that  
I decided to try and get two tests done within the demo as such you  
don''t get the background of what''s going on.  However, for
that please
visit http://opensolaris.org/os/project/ha-xvm.

The demo is based on snv_86 and SCX 2/08 simply to reflect the cheat  
sheet within the ha-xvm link above.  The purpose of the demo was to  
show the following,

- Show that an OHAC resource group managing an xVM guest domain via an  
OHAC resource can switch an xVM guest domain from one node to another  
using live migration.  What''s not shown is that the OHAC interconnects
are used for the live migration.

- Show that an OHAC managed xVM guest domain can survive a node crash.

In particular within the demo, RG1 manages xVM domain domu1. RG1 is  
then switched from node podio2 to node podio1 and domu1 is  
subsequently live migrated between the two nodes.  While RG1/domu1 is  
online on podio1 that node podio1 is crashed via uadmin 2 1.  OHAC  
automatically detects that failure and restarts domu1 on podio2.

If you''d like to see the demo please click the download tab [as the  
play button won''t work, I guess because of the screen size] within
http://mediacast.sun.com/users/neilg/media/ohac/details

Regards
Neil

Hi Robert,

Yes, the agent has been available from http://opensolaris.org/os/project/ha-xvm 
  since 19th March 2008.  Please look for that date within the url and  
select the agent link.

It is worth noting that we recently went through an Open CLARC  
inception review so that we can include this agent within the Open HA  
Cluster Data Services repository (ohacds-gate) which subsequently will  
mean that the agent gets packaged with future Solaris Cluster Express  
deliveries.

I should also point out that I recently posted an updated requirements  
specification on the same link (19th November 2008) following comments  
from the Open CLARC inception review.  My understanding is that an  
Open CLARC commitment review is being scheduled, please look out for  
future emails in that respect.

For more information on CLARC, please refer to
http://opensolaris.org/os/community/ha-clusters/ohac/contribute/CLARC/
  for the Solaris Cluster Architecture Review Process (CLARC).

Regards
Neil


On 4 Dec 2008, at 12:24, Robert Milkowski wrote:
> Hello Neil,
>
> Cool!
>
> Is the agent already available?
>
> -- 
> Best regards,
> Robert                            mailto:milek@task.gda.pl
>                                       http://milek.blogspot.com
>
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