[Lustre-discuss] LUG 2012 Registration is open

[Shay Seager]

Hello!
Happy New Year!  We here at OpenSFS hope that you have had a wonderful start to 
your 2011.

OpenSFS would like to invite you to enjoy spring in beautiful Austin Tx - 

LUG 2012 will be held at the Hyatt Regency Austin, Downtown on the Lake, 
Monday, April 23rd 2012 through Wednesday, April 25th 2012.

This 2 1/2 day event is the primary venue for discussion and seminars on open 
source parallel file system technologies with a unique focus on the Lustre™ 
parallel file system.

To Register please follow this link http://www.opensfs.org/lug/registration

LUG is a user-led event whose organizing committee is made up of 
representatives from Indiana University (IU), Naval Research Laboratory (NRL), 
Oak Ridge National Laboratory (ORNL), Sandia National Laboratories (SNL), 
Lawrence Livermore National Laboratory (LLNL), and Texas Advanced Computing 
Center (TACC).

Feel free to contact me with any questions.

Best,

Shay



- - - 
Shay Seager
Open SFS Secretary 
www.opensfs.org
(925) 290-7641
s...@opensfs.org



___
Lustre-discuss mailing list
Lustre-discuss@lists.lustre.org
http://lists.lustre.org/mailman/listinfo/lustre-discuss

[Lustre-discuss] Call for Participation - LUG 2012

[Shay Seager]

Request for Participation

The LUG program committee would like to invite members of the Lustre community 
to submit presentation abstracts for inclusion in this year's meeting.  It is 
not necessary to submit a technical paper, just an abstract of your proposed 
talk no more than a page in length.  Talks should target a half an hour in 
length and reflect the work that you or your site are doing with Lustre.  The 
deadline to submit presentation abstracts is February 14, 2012.  For questions 
or to submit a presentation abstract, send mail to 
submissi...@lists.opensfs.org or contact the program committee chair, Stephen 
Simms (ssi...@indiana.edu).

Thank you,
Shay

- - - 
Shay Seager
Open SFS Secretary 
www.opensfs.org
(925) 290-7641
s...@opensfs.org



___
Lustre-discuss mailing list
Lustre-discuss@lists.lustre.org
http://lists.lustre.org/mailman/listinfo/lustre-discuss

Re: [Lustre-discuss] Finding bugs in Lustre with Coccinelle

[Isaac Huang]

On Sun, Jan 08, 2012 at 10:20:36AM -0700, Andreas Dilger wrote:
> Isaac,
> I'm all in favor of using static code analysis tools to find bugs like this. 
> The first step, as you have done is to find and fix the bugs (though with 
> proper patches since LASSERT() as a means of error handling is unacceptable). 

That patch was only meant to point out where the bugs were.

> ..
> We are now entering a 3 month feature freeze for the 2.2 branch, so it is a 
> perfect time to fix latent bugs like this before the 2.2 release. Please 
> don't delay too long since the last month will be a code freeze and only bugs 
> being hit during testing will be landed. 

I probably don't have the time to fix them by myself but I'll open
JIRA tickets for them.

- Isaac
___
Lustre-discuss mailing list
Lustre-discuss@lists.lustre.org
http://lists.lustre.org/mailman/listinfo/lustre-discuss

Re: [Lustre-discuss] Finding bugs in Lustre with Coccinelle

[Isaac Huang]

On Sun, Jan 08, 2012 at 09:43:00AM +, Nikitas Angelinas wrote:
> Hi Isaac,
> 
> Funny, I was planning to have a look at this, this weekend if time
> permitted. I was interested in finding out how noticeable the issue of
> false positives may be in Coccinelle, but that shouldn't be a big
> problem as one will go through the generated patches manually anyway.

It did ring a couple of false alarms, which I removed from the
attached patch. But I believe they could all be avoided by improving
the simplistic Coccinelle script.

- Isaac
___
Lustre-discuss mailing list
Lustre-discuss@lists.lustre.org
http://lists.lustre.org/mailman/listinfo/lustre-discuss

Re: [Lustre-discuss] Finding bugs in Lustre with Coccinelle

[Karsten Weiss]

On Sun, 8 Jan 2012, Andreas Dilger wrote:

> I'm all in favor of using static code analysis tools to find bugs like this.

I've compiled(^1) Lustre 2.1.0 on CentOS 6.2 with Clang's static analyzer 
(LLVM 3.0). Here's the bug summary to give you an idea of the result:

Bug TypeQuantity

All Bugs 594

Dead code
 Idempotent operation 11

Dead store
 Dead assignment  76
 Dead increment3
 Dead initialization   3

Logic error
 Assigned value is garbage or undefined9
 Called function pointer is null (null dereference)   27
 Dereference of null pointer 456
 Dereference of undefined pointer value1
 Division by zero  3
 Function call argument is an uninitialized value  4
 Garbage return value  1

You can download the full result (annotated source code) here:

http://dl.dropbox.com/u/1868416/lustre-2.1.0-scan-build.tar.bz2
(I will delete this file in a couple of days)

To view the result extract the archive and point your web browser at:

lustre-2.1.0-scan-build/2012-01-09-1/index.html

Cheers,
Karsten

^1: Here's what I used:

touch META
sh autogen.sh 
scan-build ./configure --disable-server \
--with-linux=/usr/src/kernels/2.6.32-220.2.1.el6.x86_64 \
--with-linux-obj=/lib/modules/2.6.32-220.2.1.el6.x86_64/build/ \
--with-downstream-release=wc1
mkdir ./lustre-2.1.0-scan-build
scan-build -o ./lustre-2.1.0-scan-build/ make -j 24

-- 
___creating IT solutions
Dipl.-Inf. Karsten Weissscience + computing ag
phone:+49 7071 9457 452 Hagellocher Weg 73
teamline: +49 7071 9457 681 72070 Tuebingen
email:k.we...@science-computing.de  www.science-computing.de
-- 
Vorstand/Board of Management:
Dr. Bernd Finkbeiner, Dr. Roland Niemeier, 
Dr. Arno Steitz, Dr. Ingrid Zech
Vorsitzender des Aufsichtsrats/
Chairman of the Supervisory Board:
Philippe Miltin
Sitz/Registered Office: Tuebingen
Registergericht/Registration Court: Stuttgart
Registernummer/Commercial Register No.: HRB 382196 


___
Lustre-discuss mailing list
Lustre-discuss@lists.lustre.org
http://lists.lustre.org/mailman/listinfo/lustre-discuss

Re: [Lustre-discuss] Need Help

[Patrice Hamelin]

Hi,

  I am getting that occasionnally and try to remount another time, 
which works.  I am interested in finding out what's happenning too.


Thanks.

On 01/07/12 07:19, Ashok nulguda wrote:

Dear All,

We have Lustre 1.8.4 installed with 2 MDS servers and 2 OSS servers 
with 17 OSTes and 1 MDT with ha configured on both my MDS and OSS.

problem:-
Some of my OSTes are not mounting on my OSS servers.
When i try to maunully mount it  through errors " failed: Transport 
endpoint is not connected"

commnd :-mount -t lustre /dev/mapper/..   /OST1
" failed: Transport endpoint is not connected"

however, when we login and check MDS server for lustre ost status we found
cat /proc/fs/lustre/mds/lustre-MDT/recovery_status
It shows completed
And also
cat /proc/fs/lustre/devices
All my mdt and ost are showing up status.

Can anyone help us it debuging.


Thanks and Regards
Ashok

--
*Ashok Nulguda
*
*TATA ELXSI LTD*
*Mb : +91 9689945767
Mb : +91 9637095767
Land line : 2702044871
*
*Email :ash...@tataelxsi.co.in *


___
Lustre-discuss mailing list
Lustre-discuss@lists.lustre.org
http://lists.lustre.org/mailman/listinfo/lustre-discuss


--
Patrice Hamelin
Specialiste sénior en systèmes d'exploitation | Senior OS specialist
Environnement Canada | Environment Canada
2121, route Transcanadienne | 2121 Transcanada Highway
Dorval, QC H9P 1J3
Téléphone | Telephone 514-421-5303
Télécopieur | Facsimile 514-421-7231
Gouvernement du Canada | Government of Canada

___
Lustre-discuss mailing list
Lustre-discuss@lists.lustre.org
http://lists.lustre.org/mailman/listinfo/lustre-discuss