Bug 1913843 - Disable NUMA Tuning for non-pinned vNUMA nodes
Summary: Disable NUMA Tuning for non-pinned vNUMA nodes
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: ovirt-engine
Classification: oVirt
Component: BLL.Virt
Version: 4.4.4
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ovirt-4.5.0
: 4.5.0
Assignee: Lucia Jelinkova
QA Contact: Polina
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-01-07 17:31 UTC by Arik
Modified: 2022-04-20 06:33 UTC (History)
2 users (show)

Fixed In Version: ovirt-engine-4.5.0
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-04-20 06:33:59 UTC
oVirt Team: Virt
Embargoed:
pm-rhel: ovirt-4.5?
pm-rhel: planning_ack?
ahadas: devel_ack+
pm-rhel: testing_ack+

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System ID Private Priority Status Summary Last Updated
oVirt gerrit 116889 0 master MERGED webadmin: Numa tune mode disabled for unpinned numa nodes 2021-10-08 00:34:15 UTC

Description Arik 2021-01-07 17:31:57 UTC 
We currently write <numatune> only to vNUMA nodes that are pinned to physical NUMA nodes. Now that we can the 'mode' property at the NUMA node-level (bz 1729897), it's time to write it also for vNUMA nodes that are not pinned to physical NUMA nodes.
Comment 1 Liran Rotenberg 2021-04-25 10:53:30 UTC 
After some research - it's impossible to set the vNUMA tune without pinning it (automatically or not).
We could use libvirt automatic pinning and providing a physical NUMA set to use. Or, explicitly pin the NUMAs in the engine to our desire.

This will require us to have a layer managing everything, for now we are aligned with libvirt NUMAs and we shouldn't pin them.

We should however change the UI so we won't let the user set a vNUMA tuning without the pinning.
Comment 2 Lucia Jelinkova 2021-06-23 12:15:46 UTC 
The UI could be modified so that the numa tuning dropdown would be disabled or hidden for unpinned nodes.
Comment 3 Polina 2022-03-23 12:32:32 UTC 
verified on ovirt-engine-4.5.0.1-602.3fe8f849c244.6.el8ev.noarch.

In UI the 'Tune mode' is disabled for not pinned vNUMA nodes and enabled for pinned vNUMA nodes
Comment 4 Sandro Bonazzola 2022-04-20 06:33:59 UTC 
This bugzilla is included in oVirt 4.5.0 release, published on April 20th 2022.

Since the problem described in this bug report should be resolved in oVirt 4.5.0 release, it has been closed with a resolution of CURRENT RELEASE.

If the solution does not work for you, please open a new bug report.
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