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<p class="MsoNormal">Hi Klaus,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Good to meet you and everyone else at the summit.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As we discussed regarding the handling of watchdog in XenServer, both guest and host, I’ve had a discussion with our subject matter expert (Andrew, cc’d) on this topic. The guest watchdogs are handled by a hardware timer in the hypervisor
but if the timers themselves are not serviced within 5 seconds the host watchdog will fire and pull the host down.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hopefully this allays your concerns regarding the robustness of the watchdog process for the guest VMs on a XenServer environment?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Note – whilst the upstream, community supported Xen project has the same code for this process it is not enabled by default whereas it is in the Citrix packaged and supported version.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If you need any further clarification please ask and hopefully we can give you the detail you require.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Looking forward to working with you and the community on the clustering components as we integrate them with XenServer.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> Mark.<o:p></o:p></p>
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