Dear William,

The robinhood 3 documentation is here:
https://github.com/cea-hpc/robinhood/wiki/robinhood_v3_admin_doc

For POSIX, just ignore the Lustre-specific features (changelogs, HSM and 
OST-related options...)

All the documentation is listed here:
https://github.com/cea-hpc/robinhood/wiki/Documentation

The configuration sent by Alex is a good start.

Let us know if you have specific issues.

Best Regards,
Thomas

De : Branson, William via robinhood-devel 
[mailto:[email protected]]
Envoyé : mercredi 27 octobre 2021 22:50
À : [email protected]; [email protected]
Objet : [robinhood-devel] Assistance with finding documentation for a POSIX 
only deployment of robinhood

Esteemed Colleagues,

I am writing this letter to ask for your assistance in obtaining more detailed 
information about robinhood as it is deployed in a POSIX only environment.  I 
understand that most deployments are likely with the Lustre file system.
However, we would like to try it with a POSIX only spin.   I have been looking 
for documents that cover this type of deployment, but I can't seem to find too 
much available.  One Slide Deck I did see is named "robinhood-Per3S.pdf", dated 
January 30th, 2017 (1).   This document explains a bit about why a POSIX only 
type of deployment is not efficient.  Let's say for arguments sake that we 
wanted to do a POSIX only Proof of Concept.  Where would one find a 
comprehensive list of the built in's for triggers, file classes, policies, and 
rules? I have found examples in other documents, but they do not seem to cover 
any depth.  I suppose what we really could use is a document that might guide 
us to a successful POSIX deployment with depth that shows us how triggers, 
policies, and rules interact.  We understand the limitations of POSIX only, but 
our HPC deployment of a cluster with storage, is not using the Lustre file 
system.

I did find a program that I had never used before, DOXYGEN, a document 
generator program, that when run against a variety of un-complied, well 
annotated, source codes, C, C++, etc., will generate many useable forms of 
documentation.  Would you recommend using DOXYGEN in order for us to get a more 
in depth understanding of robinhood policy engine, or is there some document or 
documents that may help us better?  I have downloaded and been studying the 
documentation that I can find.  I have gone from V3, back to V2.5  and I have 
also been looking at the Lustre documentation to see if I can find references 
to POSIX only deployments and configurations.  We have the V3.1.7 robinhood 
installed and have been attempting to get it configured correctly to test out 
the triggers and policies and rules and such, but we are not being very 
successful.

Thank you in advance for your patience, time, and assistance with this endeavor.

Sincerely

Bill Branson

William E. Branson, Jr.
Server Engineer II | Research Computing Center
Medical College of Wisconsin
8701 W. Watertown Plank Road
Milwaukee, WI 53226-3548
414-955-2475 | [email protected]


1.       Leibovici, T. (n.d.). From research to industry taking back control of 
HPC file systems

with RobinHood Policy Engine. French Atomic Energy Commission. Retrieved October

27, 2021, from 
http://syst.univ-brest.fr/per3s/wp-content/uploads/2017/02/robinhood-Per3S.pdf.



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Bill Branson
Server Engineer II| Research Computing Center
Medical College of Wisconsin
414-955-2475 | [email protected]

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