SCIENTIFIC-LINUX-DEVEL Archives

August 2012

SCIENTIFIC-LINUX-DEVEL@LISTSERV.FNAL.GOV
Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
Re: kernel 2.6.32-279*.el6 and openafs-1.6.1-112.sl6
From:
Stephan Wiesand <[log in to unmask]>
Reply To:
Stephan Wiesand <[log in to unmask]>
Date:
Wed, 15 Aug 2012 14:14:32 +0200
Content-Type:
text/plain
Parts/Attachments:
text/plain (48 lines) 
Hi Thomas & Thomas,

On Aug 15, 2012, at 13:51 , "Thomas L. Koppe" <[log in to unmask]> wrote:

> Hi Stephan,
> 
> in the mean while we builded the kmod-openafs rpm against the kernel 2.6.32-279.2.1.el6 and now we've no problems anymore. We're testing it now for while.

I guess it will work ok.

I'm afraid this is the moment to realize that kABI-tracking kmods don't work reliably :-(

It seems something changed in the kernel, and the ABI signatures identified as being relevant to the AFS module by kmodtools didn't.

I'll do some more testing and report back. Any ideas most welcome. NB I just tried the elrepo module, and it has the same ABI requirements - and the same problem. So at least it's not specific to the SL package.

Best regards,
	Stephan

> 
> Best regards,  Thomas
> 
> Am 15.08.2012 11:38, schrieb Stephan Wiesand:
>> Hi Thomas,
>> 
>> On Aug 15, 2012, at 09:41 , "Thomas L. Koppe"<[log in to unmask]>  wrote:
>> 
>>> we have some problems with the new kernels (2.6.32-279, 2.6.32-279.1.1, 2.6.32-279.2.1) and openafs-1.6.1-112.sl6 on 32bit systems. It's the same problem on SL_6.2_X86 and SL6.3_X86. On servers with just a few installed RPMs everything works fine. On systems with a full paket installation we can't read any files in afs, which are bigger than some kbytes. On x86_64 systems we have no problems.
>> 
>> 
>> ouch. I can reproduce this on my test VM. Reading processes just hang in D+ state, but are interruptible, right?
>> 
>> I rebuilt the module against 2.6.32-279.1.1, and that build works for me. Could you please try
>> 
>> http://www-zeuthen.desy.de/~wiesand/SL6/i686/kmod-openafs-1.6.1-112.sl6.279.1.1.i686.rpm ?
>> 
>> Installing this will probably cause the same problem with older kernels you still have installed. If you want to keep both functional, rm /lib/modules/.../weak-updates/openafs/openafs.ko , extract the new module with rpm2cpio|cpio -iv, copy it to an appropritae place (say /lib/modules/.../kernel/fs), and run depmod -a 2.6.32-279.1.1.el6 . Then cross fingers and reboot.
>> 
>> Best regards,
>> 	Stephan
>> 

-- 
Stephan Wiesand
DESY - DV -
Platanenallee 6
15732 Zeuthen, Germany

ATOM RSS1 RSS2