Bug 740158

Summary:	[VDSM] vdsm sends wrong host interface tx_rate and rx_rate to rhevm.
Product:	[Retired] oVirt	Reporter:	Yaniv Lavi <ylavi>
Component:	vdsm	Assignee:	Dan Kenigsberg <danken>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abaron, bazulay, dbotzer, iheim, knesenko, ykaul
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:	network
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-09-05 12:16:45 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	739923

Description Yaniv Lavi 2011-09-21 06:46:19 UTC

Description of problem:
vdsm sends large negative values to rhevm instead of percentage in host interface tx_rate and rx_rate.   

Version-Release number of selected component (if applicable):
6.4

How reproducible:
always

Steps to Reproduce:
1.Create setup with several Hosts
2.run on the hosts 'vdsClient -s 0 getVdsStats'
  And check the values (Tx/Rx rate ( '-694.2' / '-470.6') && 'speed': '-1'
  
Actual results:
returns negative on percent stats. the value can be more then -30000 even.

Expected results:
returns positive percent stats.

Additional info:

Comment 2 Dan Kenigsberg 2011-09-21 06:55:43 UTC

please attach vdsm.log, and the output of `vdsClient -s 0 getVdsStats`. Please send me host details (in private), since the problem does not reproduce on hosts that I've seen.

Comment 6 Dan Kenigsberg 2011-09-21 08:41:31 UTC

This bug could have stemmed form kernel reporting negative speed in 

/sys/class/net/eth0/speed

The posted patch prevents this problem, but I cannot be sure until we find a host where this reproduces (and may warrant a separate kernel bug).

http://gerrit.usersys.redhat.com/962

Comment 7 Dan Kenigsberg 2012-09-05 12:16:45 UTC

Please reopen this bug if the following commit did not help, and you have a reproducer.

commit c70c7d02ac4fe513694a47cf0f1263c7e715d888
Author: Dan Kenigsberg <danken>
Date:   Wed Sep 21 11:33:39 2011 +0300

    BZ#740158 netinfo: never report negative speed
    
    Even if, for some reason,
    
        /sys/class/net/eth0/speed
    
    had a negative value, we should not report it as such. It justly
    confuses users.