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Bug 191933

Summary: Oops with RAID0
Product: Red Hat Enterprise Linux 4 Reporter: Joshua Baker-LePain <joshua.bakerlepain>
Component: kernelAssignee: Doug Ledford <dledford>
Status: CLOSED DUPLICATE QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: 4.0CC: jbaron
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-09-22 18:20:35 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: 176344    
Attachments:
Description Flags
serial console capture of Oops none

Description Joshua Baker-LePain 2006-05-16 15:06:41 UTC 
Description of problem:
I have a system with 2 3ware 9550SX-12 boards, each running 11 disk hardware
RAID 5s.  I want to do a stripe across these 2 large (>2TiB) disks.  I
can create the array just fine, but the system Oopses every time I try
to mke2fs the array.  Running mke2fs on 1 of the "disks" works just fine.

Version-Release number of selected component (if applicable):
2.6.9-34.ELsmp

How reproducible:
Every time

Steps to Reproduce:
1. mdadm -C /dev/md0 -l 0 -c 512 -n 2 /dev/sd[bc]1
2. mke2fs -b 4096 -j -m 0 -E stride=128 -O dir_index -T largefile4 /dev/md0
3. 
  
Actual results:
Oops (see attached serial console capture)

Expected results:
It should chug right along.

Additional info:
I asked on the linux-raid list, and Neil Brown pointed me at this patch
<http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdif
f;h=1eb29128c644581fa51f822545921394ad4f719f>.  I created a custom kernel from
the SRPM with this patch, and the problem seems to be resolved.
Comment 1 Joshua Baker-LePain 2006-05-16 15:06:42 UTC 
Created attachment 129202 [details]
serial console capture of Oops
Comment 3 Doug Ledford 2006-09-18 22:25:52 UTC 
I've posted the patch internally for review/possible inclusion in the next RHEL
update.  Thanks for the consice report and pretested fix.
Comment 6 Joshua Baker-LePain 2006-09-19 19:24:29 UTC 
No problem.  Thank *you* for reminding me that this fix isn't in u4.  I was
about to update that server.  :)
Comment 9 Doug Ledford 2006-09-22 18:20:35 UTC 

*** This bug has been marked as a duplicate of 198495 ***