[Lustre-discuss] How to determine which lustre clients are loading filesystem.

Bernd Schubert bschubert at ddn.com
Thu Jul 8 15:11:13 PDT 2010


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 07/08/2010 11:21 PM, Andreas Dilger wrote:
> On 2010-07-08, at 14:01, Guy Coates wrote:
>> Try this script; (It is from Bernd Schubert). It will parse the 
>> per-client  proc stats on the mds/oss into something nice and 
>> humanly-readable. It is very useful.
> 
> I'm not sure I'd quite call it "human readable", but it does show
> that there is a need for something to print out stats for all of the
> clients.

Yeah, I agree, it is not perfect yet. Especially it needs to be sorted
by clients doing most IO. That shouldn't be too difficult with the
existing script.

[...]

> Bernd, would you (or anyone) be interested to enhance those tools to
> be able to show stats data from multiple files at once (each prefixed
> by the device name and/or client NID)?  I don't think it makes sense
> to create separate tools for this.

I'm not sure if the existing lustre tools are really what we need. If
you have a cluster with 200 or more clients and then want to figure out
which clients are doing most IO, several lines per client provide too
much output. One line sorted by IO seems to be better, IMHO.

I would be for interested to enhance the existing tools, but then if I
look into the number of open bugs I have, several of those have a higher
priorty (btw, this script is among my bug list (bug 22469)).

Additionally at least still for the next couple of weeks I'm very very
limited with my time to finish my thesis.

Cheers,
Bernd

- --
Bernd Schubert
DataDirect Networks
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAkw2TQEACgkQqh74FqyuOzS0XQCgs7J7MqetIr1Y99gIqXBa9ntW
9pgAn2gFp+gI6R2aa3GverrNsR4v9bfO
=YcKt
-----END PGP SIGNATURE-----



More information about the lustre-discuss mailing list