Bug 73353 - kernel panic on raidstop
Summary: kernel panic on raidstop
Alias: None
Product: Red Hat Enterprise Linux 2.1
Classification: Red Hat
Component: raidtools (Show other bugs)
(Show other bugs)
Version: 2.1
Hardware: i686 Linux
Target Milestone: ---
Assignee: Larry Woodman
QA Contact: David Lawrence
Keywords: Security
Depends On: 73356
TreeView+ depends on / blocked
Reported: 2002-09-03 12:28 UTC by Nick (Gunnar) Bluth
Modified: 2007-11-30 22:06 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2003-07-10 12:22:52 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Dump of the observation of /proc/mdstat and the kernel panic (2.79 KB, text/plain)
2002-09-03 12:31 UTC, Nick (Gunnar) Bluth
no flags Details

Description Nick (Gunnar) Bluth 2002-09-03 12:28:27 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (compatible; Konqueror/3; Linux)

Description of problem:
Doing some experiments with the SAN here. After seeing that syncing 2 RAID 1's simultaneously is very slow, I wanted to speed things up a bit and did a raidstop /dev/md0
Result: kernel panic (see attachment)

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Make two RAID 1's (/dev/md[01]) using sd[ac]1 and sd[bd]1
on 4 logical drives on a LSI storage (~73 GB each) connected via QLogic 2300 HBA (driven by qla2x00.o)
2. Do a mkraid -R /dev/md[01]
3. Do a raidstop /dev/md1

Actual Results:  Kernel panic

Expected Results:  Obvious.....

Additional info:

Compaq DL 580, 4xXeon 700, 4 GB, Onboard Smart-2
2x Qlogic 2300 FC HBA

Comment 1 Nick (Gunnar) Bluth 2002-09-03 12:31:45 UTC
Created attachment 74684 [details]
Dump of the observation of /proc/mdstat and the kernel panic

Comment 2 Arjan van de Ven 2002-09-03 12:33:36 UTC
qla2x00.o panics.. film at 11...at least it didn't eat your data this time.
 Why aren't you using qla2300.o ?

Comment 3 Nick (Gunnar) Bluth 2002-09-03 13:39:31 UTC
Well, see #73356 
I just did it again without watching /proc/mdstat, and it worked...

Comment 4 Nick (Gunnar) Bluth 2002-09-06 13:00:42 UTC
Ok, I think I have to apologize...  
I just learned that the SAN guys made the four disks a 2x2 mirror, 
although they explicitly told me they hadn't...  
This explains some of the problems I had...  
Nevertheless, I think the issue concerning "raidstop" while having a   
"while true; do grep sync /proc/mdstat ; sleep 1 ; echo; done" 
seems to be generic to me... 

Comment 5 Larry Woodman 2003-06-23 17:32:50 UTC
This has been fixed in the e.12 kernel errata that was released 
at the beginning of this year.

Larry Woodman

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