[Lustre-discuss] finding clients that is opening/closing files

Brock Palen brockp at umich.edu
Tue Oct 26 12:56:30 PDT 2010


This was very helpful, I found the culprit. 

Brock Palen
www.umich.edu/~brockp
Center for Advanced Computing
brockp at umich.edu
(734)936-1985



On Oct 26, 2010, at 3:42 PM, Wojciech Turek wrote:

> One way is to check the "/proc/fs/lustre/mds/*/exports/*/stats" files, which contains per-client statistics.  They can be cleared by writing "0" to the file, and then check for files with lots of operations.
> 
> 
> On 26 October 2010 20:10, Brock Palen <brockp at umich.edu> wrote:
> I have wat I think is a badly behaving user, look at
> /proc/fs/lustre/mds/nobackup-MDT0000/stats
> 
> The open/close counters are running about 1000/s,
> 
> I would like to track down what clients this is coming from and knock the users about fixing there code that are doing this.
> 
> how does does look at 'stats by node'  do I need to look at all clients?  Or can I get this information from the mds?
> Thanks!
> 
> Brock Palen
> www.umich.edu/~brockp
> Center for Advanced Computing
> brockp at umich.edu
> (734)936-1985
> 
> 
> 
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> 
> 
> -- 
> Wojciech Turek
> 
> Senior System Architect
> 
> High Performance Computing Service
> University of Cambridge
> Email: wjt27 at cam.ac.uk
> Tel: (+)44 1223 763517 




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