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Bug 574858

Summary:	Possible RHEL5.5 LPFC panic with multiple initiators in the same SAN zone.
Product:	Red Hat Enterprise Linux 5	Reporter:	Vaios Papadimitriou <vaios.papadimitriou>
Component:	kernel	Assignee:	Rob Evers <revers>
Status:	CLOSED NOTABUG	QA Contact:	Red Hat Kernel QE team <kernel-qe>
Severity:	high	Docs Contact:
Priority:	low
Version:	5.5	CC:	andriusb, bzeranski, coughlan, laurie.barry, rlerch, sghosh
Target Milestone:	rc
Target Release:	5.5
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	A kernel panic may be triggered by the lpfc driver when multiple Emulex OneConnect Universal Converged Network Adapter initiators are included in the same Storage Area Network (SAN) zone. Typically, this kernel panic will present after a cable is pulled or one of the systems is rebooted. To work around this issue, configure the SAN to use single initiator zoning. (BZ#574858)	Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-03-30 17:24:44 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:	540752

Description Vaios Papadimitriou 2010-03-18 17:19:59 UTC

Description of problem:
This is a request to add a release note about a possible panic that may occur with the RHEL5.5 in-box LPFC driver version 8.2.0.63.3p.

This is the recommended release note:

Possible panic when multiple Emulex OneConnect initiators are in the same SAN zone

Background
When multiple OneConnect UCNA ports from different hosts running the 8.2.0.63.3p LPFC driver are included in the same zone, panics may occur on cable pulls or system reboots.

Workaround
This issue has been addressed in subsequent LPFC driver revisions. 
To work around this issue, configure the SAN using single initiator zoning.

Comment 4 Tom Coughlan 2010-03-19 19:37:47 UTC

I will queue this BZ up for 5.6. 

Note that the Technical Note is for 5.5. 

Emulex: We can ship the fix for this in 5.5.z. That seems appropriate considering the severity. Agreed? If so, please post a patch here, targeted at fixing this specific problem.

Comment 7 Ryan Lerch 2010-03-21 22:58:35 UTC

Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.

New Contents:
A kernel panic may be triggered by the lpfc driver when multiple Emulex OneConnect Universal Converged Network Adapter initiators are included in the same Storage Area Network (SAN) zone. Typically, this kernel panic will present after a cable is pulled or one of the systems is rebooted. To work around this issue, configure the SAN to use single initiator zoning. (BZ#574858)

Comment 9 Andrius Benokraitis 2010-03-30 17:24:44 UTC

Added to the RHEL 5.5 Technical Notes.