Live migration should throttle itself
Bug #1478108 reported by
Dan Smith
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
OpenStack Compute (nova) |
Fix Released
|
Low
|
Dan Smith |
Bug Description
Nova will accept an unbounded number of live migrations for a single host, which will result in timeouts and failures (at least for libvirt). Since live migrations are seriously IO intensive, allowing this to be unlimited is just never going to be the right thing to do, especially when we have functions in our own client to live migrate all instances to other hosts (nova host-evacuate-
We recently added a build semaphore to allow capping the number of parallel builds being attempted on a compute host for a similar reason. This should be the same sort of thing for live migration.
Changed in nova: | |
importance: | Undecided → Low |
tags: | added: live-migration |
Changed in nova: | |
milestone: | none → liberty-3 |
status: | Fix Committed → Fix Released |
Changed in nova: | |
milestone: | liberty-3 → 12.0.0 |
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In case anyone wonders which build semaphore is meant, review [1] introduced the config option "max_concurrent _builds" .
[1] https:/ /review. openstack. org/#/c/ 153004/