Following our recent Open CLARC inception review of the Open HA Cluster (OHAC) agent for xVM Hypervisor guest domains, I thought a small 5 minute demo would be of interest.

Please hit the download key from the demo link to stream the demo, which can be found at the HA-xVM project page.

The demo is based on Solaris Express Community Edition build 86 and Solaris Cluster Express 2/08 simply to reflect the cheat sheet from the 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.

Neil Garthwaite
Solaris Cluster Engineering