Bug 1579302 - support more granularity in cluster cpu types
Summary: support more granularity in cluster cpu types
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: ovirt-engine
Classification: oVirt
Component: BLL.Virt
Version: 4.2.3
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: ovirt-4.2.4
: ---
Assignee: Tomas Jelinek
QA Contact: Vitalii Yerys
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-05-17 10:24 UTC by Michal Skrivanek
Modified: 2018-06-26 08:38 UTC (History)
2 users (show)

Fixed In Version: ovirt-engine-4.2.4
Doc Type: Enhancement
Doc Text:
Feature: Support distinguishing cpus also by features they support, not just by model. Reason: If a new CPU feature is important, it is important to be able to distinguish if the CPU with some model also supports this feature and than require this feature also for VMs. Result: Now, it is possible to distinguish CPUs also by features and require them for the VMs. CPU types take additional flags in addition to their libvirt name. Like e.g. SandyBridge, you can specify custom CPU as “SandyBridge,+xyz” or “SandyBridge,-xyz” to add or remove arbitrary individual CPU flags in addition to what the named model contains.
Clone Of:
Environment:
Last Closed: 2018-06-26 08:38:23 UTC
oVirt Team: Virt
rule-engine: ovirt-4.2+

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
oVirt gerrit 91263 0 master MERGED engine: added support for sending vm cpu flags according to cluster 2018-05-17 11:14:38 UTC
oVirt gerrit 91294 0 ovirt-engine-4.2 MERGED engine: added support for sending vm cpu flags according to cluster 2018-05-21 08:27:59 UTC
oVirt gerrit 91368 0 ovirt-engine-3.6-els MERGED engine: added support for sending vm cpu flags according to cluster 2018-05-22 08:17:37 UTC
oVirt gerrit 91369 0 ovirt-engine-4.2.3.z MERGED engine: added support for sending vm cpu flags according to cluster 2018-05-22 08:40:26 UTC

Description Michal Skrivanek 2018-05-17 10:24:35 UTC 
vdsm always supported more granularity than just libvirt cpu models. Let's support it in engine too.
Comment 1 Vitalii Yerys 2018-06-20 15:10:12 UTC 
Verified on rhvm-4.2.4.4-0.1.el7_3.noarch

Notes: Before verification one must be sure that Host/engine and other hw support flags that are to be added to the VM.

Verification steps:

1. Create VM
2. "Run once" VM with SandyBridge,+pcid,+spec-ctrl,+ssbd (NOTE: Host must support this features)
3. VM should start successfully.
4. in the VM console verify if flags are adopted by running the command: cat /proc/cpuinfo - flags added during run once should be present in the output.
Comment 2 Sandro Bonazzola 2018-06-26 08:38:23 UTC 
This bugzilla is included in oVirt 4.2.4 release, published on June 26th 2018.

Since the problem described in this bug report should be
resolved in oVirt 4.2.4 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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