Bug 643345 – netback does not properly get to the Connected state after it's been Closed [rhel-5.5.z]

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Bug 643345 - netback does not properly get to the Connected state after it's been Closed [rhel-5.5.z]

Summary:	netback does not properly get to the Connected state after it's been Closed [...

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 5
Classification:	Red Hat
Component:	kernel-xen (Show other bugs)
Sub Component:
Version:	5.5
Hardware:	All Linux

Priority	high Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	Jiri Pirko
QA Contact:	Virtualization Bugs
Docs Contact:

URL:
Whiteboard:
Keywords:	ZStream

Depends On:	591548
Blocks:
	Show dependency tree / graph

Reported:	2010-10-15 07:07 EDT by RHEL Product and Program Management
Modified:	2015-05-04 21:21 EDT (History)
CC List:	10 users (show)

See Also:
Fixed In Version:	kernel-2.6.18-194.28.1.el5
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2011-01-04 11:55:05 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2011:0004	normal	SHIPPED_LIVE	Important: kernel security, bug fix, and enhancement update	2011-01-04 11:52:05 EST

Groups: None (edit)

Description RHEL Product and Program Management 2010-10-15 07:07:00 EDT

This bug has been copied from bug #591548 and has been proposed
to be backported to 5.5 z-stream (EUS).

Comment 2 Jiri Pirko 2010-11-16 04:43:37 EST

in kernel-2.6.18-194.28.1.el5

linux-2.6-virt-xen-fix-connected-state-after-netback-dev-closed.patch

Comment 4 Lei Wang 2010-12-07 05:08:06 EST

Hi, Paolo

Would you please help to provide the more exact steps to reproduce this bug?

Comment 5 Paolo Bonzini 2010-12-07 05:40:24 EST

You can install a Windows VM with PV drivers and disable then enable the PV network cards from Device Manager.  Without the patch the domain will hang after just a few tries and you will have to destroy the domain.  5 are enough to confirm the bug is verified.

Comment 6 Lei Wang 2010-12-07 21:17:48 EST

Hi, Paolo, thanks for your clarification.

Tested with:
i386 and x86_64 host
Win2008-64 guest
Win2003-32 guest

component version:
xen-3.0.3-120.el5
xenpv-win-1.3.1-1.el5

Steps:
1. install xenpv-win-1.3.1-1 on Windows guest
2. disable then enable the PV NIC from Device Manager
3. repeat step2

Reproduced the bug with kernel-xen-2.6.18-194.el5:
For Win2003-32 guest, it takes one or two disable/enable cycles to make guest hang.
For Win2008-64 guest, it takes only one disable/enable cycle to make guest hang.

Verified the bug with kernel-xen-2.6.18-194.30.1.el5:
For both guests, disable/enable work smoothly, and after five disable/enable cycles the guests still work fine without hang.

According the test result above, move to VERIFIED.

Comment 8 errata-xmlrpc 2011-01-04 11:55:05 EST

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0004.html

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