Can I configure the maximum allowed downtime during live migrations for each VM in RHEV?
Issue
- Currently the maximum allowed downtime during live migrations is a global setting configured in
/etc/vdsm/vdsm.confin each RHEV host and applies equally to all VMs:
# Maxmium allowed downtime for live migration in milliseconds
# (anything below 100ms is ignored) if you do not care about liveness
# of migration, set to a very high value, such as 600000.
# migration_downtime = 500
-
Some VMs run intensive memory and/or I/O workloads which cause live migration to fail to converge with above default setting for
migration_downtime. -
Some very critical VMs have demanding SLAs and increasing
migration_downtimeglobally for all VMs is not feasible. -
Can I configure different
migration_downtimevalues for different VMs?
Environment
- Red Hat Enterprise Virtualization 3.2 and 3.3.
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Close
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.