Hello Michael

> - Lustre should forward requests for archive ID 0 to all agents, but doesn’t 
> (or the client side HSM API filters them)
This is addressed in JIRA ticket LU-6449 and I am currently working on a patch.

> - Robinhood should use the last known archive ID of the file for the request
This will require to add a new field in SOFT_RM table to remember the last 
known archive_id from the ENTRY table. I will also push a patch soon for 
approval from RBH team.

And both changes are complementary.


Le Jun 26, 2015 à 09:29, Michael Kukat 
<[email protected]<mailto:[email protected]>> a écrit :

Hello,

while testing our XtreemStore parallel data mover with Robinhood, i found out 
the lhsm removals don't work. Having a quick look into the rbh and Lustre 
sources revealed that there might be a bug. Robinhood always sends the 
HUA_REMOVE with archive_id=0, which isn't forwarded to my copytool registered 
for archive_id=1 (the PDM). If i register the copytool with archive ID 0 in the 
list, it is registered for any archive ID, which also is not what i want.

lfs hsm_remove uses the archive ID from the archived file, so this removal 
request works fine.

Could you please shed some light on what behavior is expected? I could imagine 
two situations:
- Lustre should forward requests for archive ID 0 to all agents, but doesn't 
(or the client side HSM API filters them)
- Robinhood should use the last known archive ID of the file for the request

For consistency, the second option would make more sense as with correct use, 
it should not be necessary to broadcast a deletion to all archives - the the 
file should only exist in one archive, right?

Thanks for the info and best regards

--
Mit freundlichen Grüßen

Michael Kukat
Senior Software Developer

GRAU DATA AG
Marie-Curie-Str. 19
73529 Schwäbisch Gmünd

E-Mail: [email protected]<mailto:[email protected]>
Tel.: +49 7171 187-0
Fax: +49 7171 187-250

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