Problem Description
===============
OS load fails to find SAN boot partition. With an Error message given. 
 
Contact Information = Matthew Robinson/ mattrob.com 
 
---uname output---
none
 
Machine Type = 7147, 7148, 7143, 7145 
 
---Debugger---
A debugger is not configured
 
---Steps to Reproduce---
 Steps: 1.Install OS baremetal > load indistro drivers.
      2.At the time the boot partitioning informatio
        is displayed to initialize the boot partition on
        the snowmass, an error occurs " Input/output error
        during read on /dev/sdb
      3. This has been replicated on 2 separate fiber HBA's
          with the version os Redhat.
      4. Attempted same Boot vd with Sles11.1 and there were no
          error reported during partitioning and was able to format
          without issue. 
 
---Kernel - Drivers Component Data--- 
Stack trace output:
 no
 
Oops output:
 Error Input/Output error during read on/dev/sda 
 
System Dump Info:
  The system is not configured to capture a system dump.
 
*Additional Instructions for Matthew Robinson/ mattrob.com: 
-Attach sysctl -a output output to the bug.

=Comment: #1=================================================

RHEL5.5: dud loaded via ISO on USB - (dud looks to have completed)

Problem: OS load fails to find SAN boot partition. With an Error message given. (This is the key
item of the defect)

Work around:  Cancel threw the error message which should navigate you to the partition notification
screen. The provisioned LUN will be an option. Continue threw the install normally.  OS should
install and work upon reboot.


This is due to the built in RDAC for RHEL5.5 and RHEL5.6. What is occurring is that RDAC is seeing
the passive controller on the storage array and giving an error message. This is because it cannot
communicate on that path.  If a separate LSI RDAC driver is provided it should resolve this problem.

=Comment: #3=================================================

In addition to mirroring to Red Hat, we are please requesting a kbase to be writtien up for the
workaround.