Initial draft of the FS https://cwiki.apache.org/confluence/display/CLOUDSTACK/User+VM+HA+using+native+XS+HA+capabilities
-Koushik On 21-Nov-2013, at 9:59 AM, Koushik Das <koushik....@citrix.com> wrote: > Cloudstack relies on custom HA logic for user VMs running on Xenserver. The > reason for doing it like this may be due the fact that native HA capabilities > in XS was not mature enough during the initial days. Also in the custom HA > logic, Cloudstack has to correctly determine the state of a VM from the > hypervisor before it can take any action. In case there are any issues in > determining the state, HA mechanism can get impacted. Since the hypervisor > best knows the state of the VM it is a better approach to rely on native HA > capabilities. > > The idea is to rely on native HA capabilities for user VMs from XS 6.2 > onwards. HA for system VMs would still be based on application logic. For > sake of backward compatibility the earlier option will be there as well and > there will be a choice to use any one option. > > The additional requirement for this is to pre-configure native HA on a > Xenserver cluster before deploying any user VMs as documented here [1]. > > I have created a ticket in Jira [2]. I will post the FS for this shortly. > > Thanks, > Koushik > > [1] > http://support.citrix.com/servlet/KbServlet/download/34969-102-704897/reference.pdf > (refer section 3.8) > [2] https://issues.apache.org/jira/browse/CLOUDSTACK-5203 > >
