Bug 836572

Summary:	Kernel panics when running md raid{1,10} from a SAS controller with SATA drives
Product:	[openSUSE] openSUSE 12.3	Reporter:	Dion Kant <g.w.kant>
Component:	Kernel	Assignee:	E-mail List <kernel-maintainers>
Status:	RESOLVED DUPLICATE	QA Contact:	E-mail List <qa-bugs>
Severity:	Critical
Priority:	P5 - None
Version:	Final
Target Milestone:	---
Hardware:	x86-64
OS:	openSUSE 12.3
Whiteboard:
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Dion Kant 2013-08-25 13:51:38 UTC

User-Agent:       Mozilla/5.0 (X11; Linux i686 on x86_64; rv:23.0) Gecko/20100101 Firefox/23.0


When running an md raid1 or raid10 with SATA disk devices behind a SAS controller, the kernel panics.

This is a known issue and is a follow up on https://bugzilla.novell.com/show_bug.cgi?id=813889. Since I was unable to reopen that one I opened this as a new bug.

I think I run into the same issue as is described by commit 5026d7a9b2f3eb1f9bda66c18ac6bc3036ec9020 from H. Peter Anvin:

md/raid1,5,10: Disable WRITE SAME until a recovery strategy is in place

I see such panics happening with 3.7.10-1.16 kernels (desktop, xen, ...)

Is this issue taken care of in a (future) maintenance update?




Reproducible: Always

Steps to Reproduce:
1. Create a raid10 or raid1 device
2. Access the device
3. wait for kernel panic
Actual Results:  
System hangs because of kernel panic

Expected Results:  
A stable system

Comment 1 Dion Kant 2013-08-25 13:57:39 UTC

Finally I did manage to reopen the original one, after re-spinning the http post several times. Therefore I marked this one as a duplicate of 813889.

*** This bug has been marked as a duplicate of bug 813889 ***