Bug 66569

Summary:	megaraid install hang with 4kb stripe size
Product:	[Retired] Red Hat Linux	Reporter:	masanari iida <masanari_iida>
Component:	kernel	Assignee:	Arjan van de Ven <arjanv>
Status:	CLOSED NOTABUG	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.3
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2003-06-07 18:49:44 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:

Description masanari iida 2002-06-12 11:29:01 UTC

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.0.0) Gecko/20020530

Description of problem:
HP NetRAID-1M/2M with 4k byte stripe size cause following errors.

Blocked mailbox......!! 
SCSI timeout

Then system hang.  Default stripe size (64kb) is OK.
Use older megaraid (1.15hp), it works fine.


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


How reproducible:
Always

Steps to Reproduce:
1. Create 4kb stripe size LU on NetRAID 1M/2M
2. Install RH7.3 from CD-ROM
3. 
	

Actual Results:   Install never finish because of errors.
 Blocked mailbox.....!! scsi timeout


Expected Results:   Finish install.


Additional info:

 This problem went into megaraid source code between version 1.15 (1.15hp) and 1.18.
The workaround that we found was, use default stripe size or bigger.

Comment 1 Arjan van de Ven 2002-06-12 11:31:09 UTC

LSI has informed us that a 4Kb stripe size is not supported well with their
firmware. We have had a LOT of problems with 4Kb sizes before, and it has costed
us dearly. It is an official recommendation to NOT use 4Kb stripes with AMI/LSI
megaraid (and OEM variants) hardware.

Comment 2 masanari iida 2002-06-12 12:02:16 UTC

OK, if 4kb is not recommended or not supported, my next question is,
which stripe size is recommended & supported.
I remember the default of the stripe size is 64kb.
And I would like to know which stripe size has tested by LSI or RedHat?

Comment 3 Arjan van de Ven 2003-06-07 18:49:44 UTC

LSI fixed the firmware;.