Hi,
I've written a python script to walk the lustre filesystem, get the 
os.stat details for each file to get the file owner id and then 
generates a report of the total file size used by each user. I'm doing 
it this way as users own files sprinkled throughout the filesystem as 
opposed to all being filed away in neat subdirectories for each user. As 
this is just using the standard posix stuff it's slow as it goes to the 
OSS's to get the file info from there. Presumably it should be possible 
to get this info from the MDS ? If so, what lustre specific commands 
would be useful ? Is there a python module out there that links into the 
lustre client libraries to access info direct from the MDS ?
Regards,
Emyr
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