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Saturday, February 6 • 10:40 - 11:20
Host fencing in oVirt - Fixing the unknown and allowing VMs to be highly available

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In order to support highly available VMs, oVirt needs a mechanism to determine the status of a VM running on non-responsive host. We need to be sure that VM is not running before restarting it on a different host to prevent data corruption. And oVirt fencing flow is crucial to achieve this goal.

Host fencing flow is a part of oVirt host monitoring, it takes care of non-responsive hosts and tries to make them responsive again. We will describe each step of the whole fencing flow on real world issues, describe what actions around hosts/VMs are taken after each step of fencing flow and also describe how power management interface of the hosts is used.

avatar for Martin Peřina

Martin Peřina

Manager, Software Engineering, Red Hat
My name is Martin Peřina and I work as Software Engineering Manager at Red Hat, currently leading Infrastructure and Network teams for RHV.

Saturday February 6, 2016 10:40 - 11:20 CET
c. D0207 (90 places)