[lustre-discuss] Command line tool to monitor Lustre I/O ?

[Andreas Dilger]

On Feb 14, 2019, at 08:09, Laifer, Roland (SCC) <roland.laifer at kit.edu> wrote:
> 
> Hello,
> 
> since I usually just want to do a short check what is going on on
> clients and servers the hint for lltop seemed to be the best for my needs.
> 
> I tried it but there was an error message on the MDS. However, I found
> an easy fix and just had to replace
>  "/proc/fs/lustre/mds",
> with
>  "/proc/fs/lustre/mdt",
> in lltop-master/serv.c
> 
> It seems like many tools need to be adapted for the structures of new
> Lustre versions.
> 
> lltop is a nice tool to show which clients are currently doing most
> reads, writes or general requests.

Feel free to make a fork of the lltop repo and push a patch?  I don't think
that John is maintaining it anymore.  You could change the link on the wiki
page to point at your fork.

> Am 21.12.18 um 11:43 schrieb Martin Hecht:
>> Hello Roland,
>> 
>> there is a nice collection of lustre monitoring tools on the lustre wiki:
>> 
>> http://wiki.lustre.org/Lustre_Monitoring_and_Statistics_Guide
>> 
>> which also contains a couple of references. One of them is lltop, which
>> has already been mentioned a couple of times and that's what came to my
>> mind as well when I read your question.
>> 
>> best regards,
>> Martin
> 
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Cheers, Andreas
---
Andreas Dilger
Principal Lustre Architect
Whamcloud