Bug 1360990 – [z-stream clone - 4.0.4] VMs are not reported as non-responding even though qemu process does not responds.

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Bug 1360990 - [z-stream clone - 4.0.4] VMs are not reported as non-responding even though qemu process does not responds.

Summary:	[z-stream clone - 4.0.4] VMs are not reported as non-responding even though ...

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Virtualization Manager
Classification:	Red Hat
Component:	vdsm (Show other bugs)
Sub Component:
Version:	3.6.7
Hardware:	Unspecified Unspecified

Priority	medium Severity high
Target Milestone:	ovirt-4.0.4
Target Release:	4.0.4
Assigned To:	Francesco Romani
QA Contact:	sefi litmanovich
Docs Contact:

URL:
Whiteboard:
Keywords:	ZStream

Depends On:	1357798
Blocks:
	Show dependency tree / graph

Reported:	2016-07-28 02:21 EDT by rhev-integ
Modified:	2017-04-03 08:53 EDT (History)
CC List:	13 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:	This update fixes a error in the monitoring code that caused the VDSM to incorrectly report that a QEMU process has recovered and is responsive after being unavailable for a short amount of time, while it was actually unresponsive.
Story Points:	---
Clone Of:	1357798
Environment:
Last Closed:	2016-09-28 18:17:25 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	Virt
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
oVirt gerrit	61309	master	MERGED	tests: sampling: add FakeClock helper	2016-07-28 02:21 EDT
oVirt gerrit	61310	master	MERGED	vm: periodic: fix stats age reporting	2016-08-02 06:11 EDT
oVirt gerrit	61420	master	MERGED	virt: sampling: add is_empty() method to StatsSample	2016-08-02 06:06 EDT
oVirt gerrit	61820	ovirt-4.0	MERGED	tests: sampling: add FakeClock helper	2016-08-17 06:21 EDT
oVirt gerrit	61821	ovirt-4.0	MERGED	virt: sampling: add is_empty() method to StatsSample	2016-08-17 06:22 EDT
oVirt gerrit	61822	ovirt-4.0	MERGED	vm: periodic: fix stats age reporting	2016-08-17 06:22 EDT
Red Hat Product Errata	RHBA-2016:1950	normal	SHIPPED_LIVE	vdsm 4.0.4 bug fix and enhancement update	2016-09-28 21:18:46 EDT

Groups: None (edit)

Comment 1 sefi litmanovich 2016-09-05 04:53:20 EDT

Verified with rhevm-4.0.4-0.1.el7ev.noarch, host: vdsm-4.18.12-1.el7ev.x86_64.


Verified according to steps in description.
Result after kill -19 <qemu-pid> :
vdsClient is reporting the vm in state 'UP' with monitorResponse = -1. In engine the vm is reported as not responding which is the expected result.
Status isn't changed after several minutes, so no monitoring issues.
When resuming the process with kill -CONT <qemu-pid> monitorResponse = 0 and vm is back up in engine.

Comment 3 errata-xmlrpc 2016-09-28 18:17:25 EDT

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://rhn.redhat.com/errata/RHBA-2016-1950.html

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