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Bug 1498465

Summary: CPU Layer 3 cache needs to be enabled for high performance VMs
Product: [oVirt] ovirt-engine Reporter: Tomas Jelinek <tjelinek>
Component: BLL.VirtAssignee: Sharon Gratch <sgratch>
Status: CLOSED CURRENTRELEASE QA Contact: Artyom <alukiano>
Severity: high Docs Contact:
Priority: high    
Version: futureCC: bugs, sgratch
Target Milestone: ovirt-4.2.0Keywords: Triaged
Target Release: ---Flags: rule-engine: ovirt-4.2+
rule-engine: planning_ack+
tjelinek: devel_ack+
mavital: testing_ack+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: No Doc Update
Doc Text:
undefined
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-12-20 11:00:02 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Virt RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1457239    

Description Tomas Jelinek 2017-10-04 11:54:44 UTC
Description of problem:

If the VM is declared as high performance VM, the CPU Layer 3 cache needs to be enabled for it.

Comment 1 Red Hat Bugzilla Rules Engine 2017-10-04 11:54:47 UTC
Target release should be placed once a package build is known to fix a issue. Since this bug is not modified, the target version has been reset. Please use target milestone to plan a fix for a oVirt release.

Comment 2 Sharon Gratch 2017-10-25 09:51:54 UTC
No documentation is needed here since it is part of the "high performance" feature documentation (https://bugzilla.redhat.com/show_bug.cgi?id=1505927)

Comment 3 Artyom 2017-10-29 07:03:36 UTC
No any information about CPU cache under https://github.com/oVirt/ovirt-site/blob/master/source/develop/release-management/features/virt/high-performance-vm.html.md, so please update it.

Comment 4 Sharon Gratch 2017-10-30 12:57:35 UTC
(In reply to Artyom from comment #3)
> No any information about CPU cache under
> https://github.com/oVirt/ovirt-site/blob/master/source/develop/release-
> management/features/virt/high-performance-vm.html.md, so please update it.

Added: 
https://www.ovirt.org/develop/release-management/features/virt/high-performance-vm/#enable-cpu-cache-layer-3

Comment 5 Artyom 2017-10-31 11:35:19 UTC
Verified on ovirt-engine-4.2.0-0.0.master.20171027213842.gitded437c.el7.centos.noarch
# virsh -r dumpxml 90 | grep cache
....
<cache level='3' mode='emulate'/>
....

Comment 6 Sandro Bonazzola 2017-12-20 11:00:02 UTC
This bugzilla is included in oVirt 4.2.0 release, published on Dec 20th 2017.

Since the problem described in this bug report should be
resolved in oVirt 4.2.0 release, published on Dec 20th 2017, it has been closed with a resolution of CURRENT RELEASE.

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