Bug 462844 - Changeable SCSI Disk Boot Messages
Summary: Changeable SCSI Disk Boot Messages
Keywords:
Status: CLOSED DEFERRED
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel
Version: 4.7.z
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Red Hat Kernel Manager
QA Contact: Martin Jenner
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-09-19 10:40 UTC by Qian Cai
Modified: 2009-05-01 16:13 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-05-01 16:13:14 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)

Description Qian Cai 2008-09-19 10:40:59 UTC
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 Qian Cai 2008-09-19 12:38:55 UTC
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 Qian Cai 2008-09-22 01:41:25 UTC
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 Qian Cai 2008-10-22 12:39:10 UTC
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 14:06:05 UTC
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 Qian Cai 2009-05-01 16:13:14 UTC
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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