[Lustre-discuss] OSTs hanging while running IOR

[Rafael David Tinoco]

It seeeeeeeems that using 64 threads for OST solved the problem.
:D

But.. too early to celebrate .. running all blocksizes and stripe widths combinations.

Regards

Tinoco

-----Original Message-----
From: Oleg.Drokin at Sun.COM [mailto:Oleg.Drokin at Sun.COM] 
Sent: Wednesday, September 09, 2009 7:26 PM
To: Rafael David Tinoco
Cc: lustre-discuss at lists.lustre.org
Subject: Re: [Lustre-discuss] OSTs hanging while running IOR

Hello!

On Sep 9, 2009, at 1:31 PM, Rafael David Tinoco wrote:
> One of my OSSs crashes, sometimes one, sometimes another. With the  
> following error:

That's not a crash.
That's watchdog timeout indicative of lustre spending too much time
waiting on io.
As such you need to somehow decrease the load on the system (by e.g.  
reducing
the number of io threads - was discussed on this list recently),  
increase obd_timeout or
get faster disk subsystem.

Bye,
     Oleg