Bug 118532

Summary:	EVMS crashes kernel
Product:	Gentoo Linux	Reporter:	Johan Hedin <johan.hedin>
Component:	[OLD] Core system	Assignee:	Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel>
Status:	RESOLVED NEEDINFO
Severity:	critical	CC:	jsailor
Priority:	High
Version:	2005.1
Hardware:	x86
OS:	Linux
URL:	http://forums.gentoo.org/viewtopic-t-421124.html
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	Kernel config dmesg lspci -vv

Description Johan Hedin 2006-01-10 07:00:42 UTC

Using EVMS craches my HP xw4300 and our HP nx8300. We have tried

Gentoo sources 2.6.14-gentoo-r5 (and some of the below also with 2005.1r1):
evms + BBR + lvm2 + XFS
evms + MD + XFS
evms + BBR + MD + XFS
evms + BBR + MD + LVM2 + XFS
evms + BBR + MD + LVM2 + XFS (on USB discs)

Vanilla sources + BBR 2.6.14.2:
evms + BBR + MD + LVM2 + XFS

Sometimes a kernel panic. Most often just har lockup with no reactor to keybord. Once a reboot. I have two systems at home, one old IBM running EVSM + BBR + LVM2 + XFS and one ASUS P4P800 running EVMS + XFS working without problem. These machines are installed with 2005.0 and upgraded to latest gentoo kernel.

EVMS + XFS as compability volume works.

We also always gets the minimal md reconstruction speed. I don't know if this is related.

Comment 1 Johan Hedin 2006-01-10 07:04:42 UTC

Created attachment 76735 [details]
Kernel config

Comment 2 Johan Hedin 2006-01-10 07:05:38 UTC

Created attachment 76736 [details]
dmesg

Comment 3 Johan Hedin 2006-01-11 04:34:45 UTC

Created attachment 76823 [details]
lspci -vv

Comment 4 Johan Hedin 2006-01-12 05:23:29 UTC

Pure md without evms gives high reconstructions speeds

Comment 5 Johan Hedin 2006-01-13 05:50:48 UTC

Setting kernel stack size 8k did remove the problem.

Comment 6 Daniel Drake (RETIRED) gentoo-dev

2006-01-20 15:52:25 UTC

Do you think you could test the latest development kernel (currently 2.6.16-rc1) and see if 4k stacks work ok there? I know there has been work to reduce stack consumption on storage chains like this, but it would be useful to report the issue if it is not completely fixed.

Comment 7 Daniel Drake (RETIRED) gentoo-dev

2006-02-10 08:44:58 UTC

See comment #6