Bug 1413968

Summary:	[z-stream clone - 3.6.11] After hotplugging CPU results in frequent KeyError.
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	rhev-integ
Component:	ovirt-engine	Assignee:	Milan Zamazal <mzamazal>
Status:	CLOSED ERRATA	QA Contact:	Israel Pinto <ipinto>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3.6.9	CC:	achareka, eedri, eheftman, lsurette, mavital, mgoldboi, michal.skrivanek, mzamazal, rbalakri, Rhev-m-bugs, srevivo, tjelinek, troels, ykaul, ylavi
Target Milestone:	ovirt-3.6.11	Keywords:	ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Previously, there were frequent KeyError tracebacks in the vdsm.log after CPU hotplug. Now, these errors are no longer produced by VDSM after CPU hotplug.	Story Points:	---
Clone Of:	1408790	Environment:
Last Closed:	2017-05-09 17:04:00 UTC	Type:	---
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:	1408790
Bug Blocks:

Description rhev-integ 2017-01-17 13:13:26 UTC

+++ This bug is a downstream clone. The original bug is: +++
+++   bug 1408790 +++
======================================================================

After hotplugging CPU results in following KeyError:

~~~
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/vdsm/executor.py", line 192, in _execute_task
    callable()
  File "/usr/share/vdsm/virt/periodic.py", line 289, in __call__
    self._execute()
  File "/usr/share/vdsm/virt/periodic.py", line 345, in _execute
    self._vm.updateNumaInfo()
  File "/usr/share/vdsm/virt/vm.py", line 5181, in updateNumaInfo
    self._numaInfo = numaUtils.getVmNumaNodeRuntimeInfo(self)
  File "/usr/share/vdsm/numaUtils.py", line 116, in getVmNumaNodeRuntimeInfo
    vnode_index = str(vcpu_to_vnode[vcpu_id])
KeyError: 8
~~~

We already have upstream patch for the same:

https://gerrit.ovirt.org/#/c/65562/1..4

But latest Package - vdsm-python-4.18.15.3-1.el7ev.noarch.rpm does not have the patch.

(Originally by Ameya Charekar)

Comment 1 rhev-integ 2017-01-17 13:13:35 UTC

Yes, this is fixed in 4.1. Is that enough or an earlier release is requested?

(Originally by michal.skrivanek)

Comment 5 rhev-integ 2017-01-17 13:13:53 UTC

Patch backported to 4.0, backport to 3.6 posted.

(Originally by Milan Zamazal)

Comment 8 Israel Pinto 2017-03-28 19:18:42 UTC

Verify with:
Red Hat Enterprise Virtualization Manager Version: 3.6.11-0.1.el6


Steps:
1. Create VM with 1 CPU and Run it
2. Hotplug CPU to 2 and check vdsm log 

Results:
CPU is updated, No Error in vdms log

Comment 10 errata-xmlrpc 2017-05-09 17:04:00 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

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

https://access.redhat.com/errata/RHEA-2017:1210