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Bug 1134701

Summary:

NPE after starting/migrating VM

Product:

[oVirt] ovirt-engine

Reporter:

Arik <ahadas>

Component:

General

Assignee:

bugs <bugs>

Status:

CLOSED CURRENTRELEASE

QA Contact:

Israel Pinto <ipinto>

Severity:

low

Docs Contact:

Priority:

medium

Version:

---

CC:

ahadas, bugs, ecohen, gklein, istein, rbalakri, yeylon

Target Milestone:

ovirt-3.6.0-rc

Flags:

rule-engine: ovirt-3.6.0+
ylavi: planning_ack+
rule-engine: devel_ack+
rule-engine: testing_ack+

Target Release:

3.6.0

Hardware:

Unspecified

OS:

Unspecified

Whiteboard:

virt

Fixed In Version:

ovirt-engine-3.6.0-0.0.master.20150412172306.git55ba764

Doc Type:

Bug Fix

Doc Text:

Story Points:

---

Clone Of:

Environment:

Last Closed:

2015-12-22 13:28:52 UTC

Type:

Bug

Regression:

---

Mount Type:

---

Documentation:

---

CRM:

Verified Versions:

Category:

---

oVirt Team:

Virt

RHEL 7.3 requirements from Atomic Host:

Cloudforms Team:

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Target Upstream Version:

Embargoed:

Attachments:

Description	Flags
engine.log	none

Description Arik 2014-08-28 07:07:15 UTC

Description of problem:
NPE because of a race which is similar to the one that was fixed by Icaca2a3 (http://gerrit.ovirt.org/#/c/19683/).

Version-Release number of selected component (if applicable):


How reproducible:
very rarely

Steps to Reproduce:
1. Start/Migrate VM
2.
3.

Actual results:
NPE in engine.log

Expected results:
The NPE should not occur

Additional info:

Comment 1 Arik 2014-08-28 07:11:13 UTC

Created attachment 931738 [details]
engine.log

The NPE occurred at 2014-08-27 18:45:47,268

Comment 2 Arik 2014-08-31 07:09:35 UTC

http://gerrit.ovirt.org/gitweb?p=ovirt-engine.git;a=commit;h=c5fea68abebbc0442d103c141d236e09645f2bd9

Comment 3 Israel Pinto 2015-12-08 17:04:03 UTC

how we can reproduce this problem?

Comment 4 Arik 2015-12-08 20:06:06 UTC

As with every typical race, there is no deterministic way to reproduce it from the client side. I suggest to do a massive run-vm operations and check that the log is clean from NPEs.

Comment 5 Israel Pinto 2015-12-13 11:10:25 UTC

Verify with:
RHEVM Version: 3.6.1.3-0.1.el6 
vdsm: vdsm-4.17.13-1.el7ev
libvirt: libvirt-1.2.17-13.el7_2.2

Scenario:
1. Create VM with OS.
2. Run Start/Stop VM in loop for 50 Iterations
3. Check logs for NPE 

Results:
VM start / stop 50 times with no error.

PASS

Comment 6 Sandro Bonazzola 2015-12-22 13:28:52 UTC

oVirt 3.6.0 has been released and the bz verified, moving to closed current release.