Bug 1373484

Summary:	Initial HE VM config must include maxVCpus parameter in order to support CPU hotplug
Product:	[oVirt] ovirt-hosted-engine-setup	Reporter:	Artyom <alukiano>
Component:	General	Assignee:	Simone Tiraboschi <stirabos>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Artyom <alukiano>
Severity:	high	Docs Contact:
Priority:	high
Version:	---	CC:	bugs, mgoldboi, ylavi
Target Milestone:	ovirt-4.0.5	Keywords:	Triaged, ZStream
Target Release:	2.0.3	Flags:	rule-engine: ovirt-4.0.z+ mgoldboi: planning_ack+ sbonazzo: devel_ack+ mavital: testing_ack+
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Initial HE VM config must include maxVCpus parameter in order to support CPU hotplug: adding it.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-01-18 07:35:41 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Integration	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1379964

Description Artyom 2016-09-06 11:52:38 UTC

Description of problem:
In 4.0 we support CPU hotplug, but until HE VM configuration file does not have maxVCpus we can not hotplug CPU.

Version-Release number of selected component (if applicable):
ovirt-hosted-engine-ha-2.0.3-1.el7ev.noarch

How reproducible:
Always

Steps to Reproduce:
1. Deploy HE
2. Check HE VM configuration after deployment
3.

Actual results:
/var/run/ovirt-hosted-engine-ha/vm.conf does not include maxVCpus parameter

Expected results:
/var/run/ovirt-hosted-engine-ha/vm.conf must include maxVCpus parameter, otherwise, it does not possible to hotplug CPU until we restart HE VM with updated OVF

Additional info:
I believe this problem will exist until I can see under the log:
MainThread::INFO::2016-09-06 14:51:35,322::config::206::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config::(refresh_local_conf_file) Trying to get a fresher copy of vm configuration from the OVF_STORE
MainThread::WARNING::2016-09-06 14:51:38,965::ovf_store::106::ovirt_hosted_engine_ha.lib.ovf.ovf_store.OVFStore::(scan) Unable to find OVF_STORE
MainThread::ERROR::2016-09-06 14:51:38,966::config::235::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config::(refresh_local_conf_file) Unable to get vm.conf from OVF_STORE, falling back to initial vm.conf

Comment 1 Yaniv Lavi 2016-09-15 15:19:50 UTC

Do we need BZ #1364132 to fix this?

Comment 2 Martin Sivák 2016-09-20 10:37:09 UTC

This issue is only present until the VM is restarted for the first time after the OVF was refreshed by the engine.

Comment 3 Artyom 2016-10-05 13:29:42 UTC

Verified on ovirt-hosted-engine-setup-2.0.3-2.el7ev.noarch

Initial configuration file looks like:
[root@alma07 ovirt-hosted-engine-setup]# cat /var/run/ovirt-hosted-engine-ha/vm.conf
vmId=c49b16c1-9644-479a-8fed-9ba9949721e9
memSize=4096
display=vnc
devices={index:2,iface:ide,address:{ controller:0, target:0,unit:0, bus:1, type:drive},specParams:{},readonly:true,deviceId:43f8e4af-e308-4e2f-a767-b4a74d0718d4,path:,device:cdrom,shared:false,type:disk}
devices={index:0,iface:virtio,format:raw,poolID:00000000-0000-0000-0000-000000000000,volumeID:c76f68d3-dd0a-4ff1-8e56-fff9e5cf5c42,imageID:a1f83ec7-5481-42fe-adf9-e90d14cd7e1b,specParams:{},readonly:false,domainID:204c3098-e2a3-470c-a2b8-e4d3543685e1,optional:false,deviceId:a1f83ec7-5481-42fe-adf9-e90d14cd7e1b,address:{bus:0x00, slot:0x06, domain:0x0000, type:pci, function:0x0},device:disk,shared:exclusive,propagateErrors:off,type:disk,bootOrder:1}
devices={device:scsi,model:virtio-scsi,type:controller}
devices={nicModel:pv,macAddr:00:1a:4a:16:25:03,linkActive:true,network:ovirtmgmt,filter:vdsm-no-mac-spoofing,specParams:{},deviceId:078ae09a-e595-41c8-9bd0-56be2a245400,address:{bus:0x00, slot:0x03, domain:0x0000, type:pci, function:0x0},device:bridge,type:interface}
devices={device:console,specParams:{},type:console,deviceId:ccf5c63a-9ea2-417d-aff9-c9703320dc11,alias:console0}
devices={device:vga,alias:video0,type:video}
vmName=HostedEngine
spiceSecureChannels=smain,sdisplay,sinputs,scursor,splayback,srecord,ssmartcard,susbredir
smp=2
maxVCpus=4
cpuType=SandyBridge
emulatedMachine=rhel6.5.0
devices={device:virtio,specParams:{source:random},model:virtio,type:rng}