Quota accounting adds about 1% overhead, but has been enabled by default for several years already.
Quota *enforcement* can have a higher overhead when close to the quota limits, and of course will remove 100% of performance when the limit is exceeded. Cheers, Andreas On Apr 22, 2022, at 13:40, Raj <[email protected]> wrote: Andreas, Is there any IO penalties in enabling project quota? Will I see the same throughput from the FS? Thanks -Raj On Fri, Apr 15, 2022 at 1:32 PM Andreas Dilger via lustre-discuss <[email protected]<mailto:[email protected]>> wrote: Note that in newer Lustre releases, if you have project IDs enabled (you don't need to *enforce* project quotas, just have quota accounting enabled), that "df" (statfs()) will return the quota for the project ID on that directory tree. It isn't _quite_ "fast du" for arbitrary directory trees, but quite useful in any case. On Apr 15, 2022, at 11:17, Steve L via lustre-discuss <[email protected]<mailto:[email protected]>> wrote: Hi Thomas, Thanks for the tips. I have a client that they are looking into implementing their own "fast du". I will look into Robinhood to see if there are any duplicated functions. Not sure if they are looking into advanced functionality like policy management, thou. Does Robinhood offer APIs, or command-line tools to provide "du" like data? If not, how about direct database accesses? /steve ________________________________ From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Sent: Friday, April 15, 2022 4:03 AM To: 'Steve L' <[email protected]<mailto:[email protected]>> Cc: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Subject: RE: Essential tools for Lustre Dear Steve, >What are the essential tools to make life easier in the Lustre ecosystem? We use and maintain to those 2 open-source tools: - Shine, for Lustre administration: https://github.com/cea-hpc/shine - RobinHood policy engine for managing data in filesystems: https://github.com/cea-hpc/robinhood/wiki Best regards, Thomas De : lustre-discuss [mailto:[email protected]] De la part de Steve L via lustre-discuss Envoyé : samedi 9 avril 2022 00:52 À : [email protected]<mailto:[email protected]> Objet : [lustre-discuss] Essential tools for Lustre Hi All, I am new to Lustre. I like to know if anyone out there is actively using IML (Integrated Manager for Lustre) to administer and/or monitor Lustre? If yes, I plan to run Lustre LTS (e.g., 2.12.8). Do you know if IML can run against 2.12.8? IML official website seems to be very quiet for the last year. Is the project still alive? If no, do you run any other GUI or non-GUI tools to help administer/monitor? What are the essential tools to make life easier in the Lustre ecosystem? Any pointers are deeply appreciated. If this is not the right forum to ask such questions, please accept my apology. I searched the archive, but could not discover any items related to IML. Thanks ahead for your assistance. Steve _______________________________________________ lustre-discuss mailing list [email protected]<mailto:[email protected]> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org Cheers, Andreas -- Andreas Dilger Lustre Principal Architect Whamcloud _______________________________________________ lustre-discuss mailing list [email protected]<mailto:[email protected]> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
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