Bug 462844 – Changeable SCSI Disk Boot Messages

Bug 462844 - Changeable SCSI Disk Boot Messages

Summary:	Changeable SCSI Disk Boot Messages

Status:	CLOSED DEFERRED

Aliases:	None

Product:	Red Hat Enterprise Linux 4
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	4.7.z
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	Red Hat Kernel Manager
QA Contact:	Martin Jenner
Docs Contact:

URL:
Whiteboard:
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Depends On:
Blocks:
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Reported:	2008-09-19 06:40 EDT by CAI Qian
Modified:	2009-05-01 12:13 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2009-05-01 12:13:14 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Description CAI Qian 2008-09-19 06:40:59 EDT

Description of problem:
Sometimes, I have seen SCSI disk boot messages have been changed among different boots with the same Kernel,

http://rhts.redhat.com/testlogs/29361/106777/912439
(diff-dmesg.2.6.9-78.0.4.EL)

 SCSI device sdc: drive cache: write through
  sdc: sdc1
 Attached scsi disk sdc at scsi0, channel 0, id 2, lun 0
-  Vendor: IBM       Model: 26K4888a S320  1  Rev: 1   
+  Vendor: SDR       Model: GEM318P           Rev: 1   
   Type:   Processor                          ANSI SCSI revision: 02
 Fusion MPT SAS Host driver 3.12.19.00rh
 libata version 2.00 loaded.


Version-Release number of selected component (if applicable):
kernel-2.6.9-78.0.4.EL

How reproducible:
occasionally (1 in 10 boots?)

Comment 1 CAI Qian 2008-09-19 08:38:55 EDT

Don't know if this is a regression, but I could not reproduce the issue for RHEL 4.6 GA Kernel (2.6.9-78.EL) for rebooting around 20 times.

Comment 2 CAI Qian 2008-09-21 21:41:25 EDT

I could reproduce it with kernel-2.6.9-78.0.3.EL. Let me run it for a longer period to see if it is there since RHEL 4.7.

Comment 3 CAI Qian 2008-10-22 08:39:10 EDT

Any idea on why would these information would change? Is it because there are two disks in the controller, and one of them has been picked up randomly?

Comment 4 Vitaly Mayatskikh 2009-03-16 10:06:05 EDT

We need to know full h/w configuration for SCSI bus, may be there is some kind of collision. I'll ask RHTS admins.

Comment 5 CAI Qian 2009-05-01 12:13:14 EDT

The machine iin question (groucho.rhts.bos.redhat.com) is broken at the moment.
https://engineering.redhat.com/rt3/Ticket/Display.html?id=29276

I'll close this out for now, and I can reopen this if have seen another occurrence in the future.

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