Bug 667141

Summary: [RHEL5.6] megaraid_sas stalls after driver is reset [rhel-5.6.z]
Product: Red Hat Enterprise Linux 5 Reporter: RHEL Program Management <pm-rhel>
Component: kernelAssignee: Jiri Pirko <jpirko>
Status: CLOSED ERRATA QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: high Docs Contact:
Priority: urgent    
Version: 5.6CC: bo.yang, coughlan, dejohnso, dhoward, jpirko, kzhang, mzywusko, pm-eus, rkhan, syeghiay, thenzl
Target Milestone: rcKeywords: ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: kernel-2.6.18-238.1.1.el5 Doc Type: Bug Fix
Doc Text:
If an error occurred during I/O, the SCSI driver reset the "megaraid_sas" controller to restore it to normal state. However, on Red Hat Enterprise Linux 5, the waiting time to allow a full reset completion for the "megaraid_sas" controller was too short. The driver incorrectly recognized the controller as stalled, and, as a result, the system stalled as well. With this update, more time is given to the controller to properly restart, thus, the controller operates as expected after being reset.
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-01-18 18:22:18 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: 665427, 670903, 692673    
Bug Blocks:    

Description RHEL Program Management 2011-01-04 15:44:16 UTC
This bug has been copied from bug #665427 and has been proposed
to be backported to 5.6 z-stream (EUS).

Comment 2 Jiri Pirko 2011-01-05 11:53:21 UTC
in kernel-2.6.18-238.1.1.el5

linux-2.6-scsi-megaraid-give-fw-more-time-to-recover-from-reset.patch

Comment 6 errata-xmlrpc 2011-01-18 18:22:18 UTC
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-2011-0163.html

Comment 7 Martin Prpič 2011-07-13 20:29:40 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:
If an error occurred during I/O, the SCSI driver reset the "megaraid_sas" controller to restore it to normal state. However, on Red Hat Enterprise Linux 5, the waiting time to allow a full reset completion for the "megaraid_sas" controller was too short. The driver incorrectly recognized the controller as stalled, and, as a result, the system stalled as well. With this update, more time is given to the controller to properly restart, thus, the controller operates as expected after being reset.