Hello,
Sorry for the delay of my answer.
A full support of PFL in robinhood requires deeps changes in the DB
schema, the way stripe information is handled internally, and how
striping criteria are interpreted in policies. So, unless a contributor
or vendor has a strong interest in implementing this, such a
full-featured support is not expected in the short term.
Then it depends what support of FPL you expect. I have implemented a
very basic support of PFL that stores the last allocated layout of a
file. In this case robinhood considers only one of the components of the
layout, which is likely the region where most of the data resides.
The patch is here: https://review.gerrithub.io/c/cea-hpc/robinhood/+/445924
Or download the full code of robinhood including this patch:
https://review.gerrithub.io/changes/cea-hpc%2Frobinhood~445924/revisions/1/archive?format=tgz
(see README.md for build instructions)
Feedback welcome!
Regards,
Thomas
On 1/3/19 10:49 PM, Hall, Shawn (NAG) wrote:
Hi,
I’m happy to report that for our purposes (read only reporting),
Robinhood scans a PFL enabled Lustre file system and consumes
changelogs successfully. The STRIPE_INFO and STRIPE_ITEMS tables in
the database are only populated with info from files with a normal
layout (striping), whereas files with composite (PFL) layouts do not
appear.
For our purposes this does the job, but the main annoyance is the
copious number of “GetStripe | Unsupported Luster magic number from
getstripe: 0XBD60BD0” messages generated in the Robinhood logs.
Is PFL support still on the roadmap for Robinhood? I’m happy to help
test if that’s valuable.
Thanks,
Shawn
*From:*Cowe, Malcolm J <malcolm.j.c...@intel.com>
*Sent:* Monday, August 7, 2017 6:11 PM
*To:* robinhood-supp...@lists.sf.net
*Subject:* Re: [robinhood-support] PFL support
PFL landed in Lustre 2.10.0 (LU-8998).
Malcolm.
*From: *LEIBOVICI Thomas
*Organization: *CEA-DAM
*Date: *Monday, 7 August 2017 at 6:16 pm
*To: *"Hall, Shawn (NAG)" , "robinhood-supp...@lists.sf.net
<mailto:robinhood-supp...@lists.sf.net>"
*Subject: *Re: [robinhood-support] PFL support
Hello,
Can you remind me in what Lustre release it is?
Thanks
On 07/27/17 14:47, Hall, Shawn (NAG) wrote:
Hi,
I haven’t had a chance to test it, but I think it’s fairly safe to
assume that Robinhood won’t work with progressive file layouts. Is
PFL support on the roadmap for Robinhood?
Thanks,
Shawn
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