[Lustre-discuss] Log file opens/reads/etc?

[daledude]

On Aug 18, 6:43 am, Andreas Dilger <adil... at sun.com> wrote:
> On Aug 09, 2008  05:06 -0700, daledude wrote:
>
> > Is there is a tool that shows what files are being accessed? Sort of
> > like inotify, but not inotify? I'd like to compile file access
> > statistics to try and balance the most accessed files across the OST's
> > better.
>
> There is a feature being worked on for Lustre 2.0 called "Changelogs"
> that will allow recording all files that are modified.
>
> Cheers, Andreas

Is there a "debug" tool/option/log in 1.6.5 that outputs what files
are being opened or read? Im more interested in reads. Im not using
striping so I'd like to find out what files are accessed the most so
they can be copied to less overloaded OST's.

Even a tool that just works with generic ext that also works with
lustre would be good. I dont even know if I can use inotify with
lustre, but I cant use that anyways as I have about 6 million files
and half that number in directory trees.

Thanks,
Dale