Bug 735083

Summary: reboot hang with netconsole configured in vlan network
Product: Red Hat Enterprise Linux 5 Reporter: Guohua Ouyang <gouyang>
Component: ovirt-nodeAssignee: Joey Boggs <jboggs>
Status: CLOSED CURRENTRELEASE QA Contact: Virtualization Bugs <virt-bugs>
Severity: urgent Docs Contact:
Priority: urgent    
Version: 5.7CC: apevec, cshao, ianauati, kli, leiwang, mburns, moli, ovirt-maint, soporte, ycui
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-11-16 14:34:20 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:
Attachments:
Description Flags
ifcfg-*, screenshot, nc output none

Description Guohua Ouyang 2011-09-01 11:48:44 UTC
Created attachment 520997 [details]
ifcfg-*, screenshot, nc output

Description of problem:
Configure netconsole in vlan network, reboot rhevh got hang at shutdown the vlan sub-interface (eth0.20).
repeat the error: "unregister_netdevice: waiting for rhevm to become free. Usage count =1".


Version-Release number of selected component (if applicable):
rhev-hypervisor-5.7-20110831

How reproducible:
Always.

Steps to reproduce:
1. install rhevh and configure netconsole.
2. after boot into rhevh and reboot

Actual results:
1. it hang at shutdown the vlan sub-interface.

Expected results:
1. reboot successfully.

Additional info:
Sometimes, after configure netconsole and reboot the os, it repeated reboot automatically.

Comment 1 Guohua Ouyang 2011-09-01 11:58:02 UTC
There is a known issue about netconsole does not support in vlan network in 5.5.
(http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Virtualization_for_Servers/2.2/html/5.5-2.2_Hypervisor_Release_Notes/sect-Release_Notes-Known_Issues.html)
But I can see the output on netconsole server after configure netconsole in 5.7(see attached file "nc"), so I don't think that know issue still exists in 5.7.

Comment 2 Guohua Ouyang 2011-09-01 12:16:41 UTC
after configure netconsole, please reboot twice if did not met the hang issue at the first time.

Comment 3 Ying Cui 2011-09-01 12:26:10 UTC
It not regression bug , test on 5.7-20110824.0 and 5.7-20110725.1, both can reproduce this issue.

Comment 4 cshao 2011-10-20 06:31:31 UTC
The same issue occurs in rhev-hypervisor-5.8-20111019.0.el5.