Re: [ceph-users] Doubts about backfilling performance
Hi David , After studying a lot about this configuration I found this post. https://zeestrataca.com/posts/expanding-ceph-clusters-with-juju/ Thanks for your recommendation! Regards, Fabio Abreu On Sat, Feb 23, 2019 at 11:19 AM David Turner wrote: > Jewel is really limited on the settings you can tweak for backfilling [1]. > Luminous and Mimic have a few more knobs. An option you can do, though, is > to use osd_crush_initial_weight found [2] here. With this setting you set > your initial crush weight for new osds to 0.0 and gradually increase them > to what you want them to be. This doesn't help with already added osds, but > can help in the future. > > > [1] > http://docs.ceph.com/docs/jewel/rados/configuration/osd-config-ref/#backfilling > [2] > http://docs.ceph.com/docs/jewel/rados/configuration/pool-pg-config-ref/ > > On Sat, Feb 23, 2019, 6:08 AM Fabio Abreu > wrote: > >> Hello everybody, >> >> I try to improve the backfilling proccess without impact my client I/O, >> that is a painfull thing when i putted a new osd in my environment. >> >> I look some options like osd backfill scan max , Can I improve the >> performance if I reduce this ? >> >> Someome recommend parameter to study in my scenario. >> >> My environment is jewel 10.2.7 . >> >> Best Regards, >> Fabio Abreu >> -- >> Atenciosamente, >> Fabio Abreu Reis >> http://fajlinux.com.br >> *Tel : *+55 21 98244-0161 >> *Skype : *fabioabreureis >> ___ >> ceph-users mailing list >> ceph-users@lists.ceph.com >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > -- Atenciosamente, Fabio Abreu Reis http://fajlinux.com.br *Tel : *+55 21 98244-0161 *Skype : *fabioabreureis ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] Doubts about backfilling performance
Jewel is really limited on the settings you can tweak for backfilling [1]. Luminous and Mimic have a few more knobs. An option you can do, though, is to use osd_crush_initial_weight found [2] here. With this setting you set your initial crush weight for new osds to 0.0 and gradually increase them to what you want them to be. This doesn't help with already added osds, but can help in the future. [1] http://docs.ceph.com/docs/jewel/rados/configuration/osd-config-ref/#backfilling [2] http://docs.ceph.com/docs/jewel/rados/configuration/pool-pg-config-ref/ On Sat, Feb 23, 2019, 6:08 AM Fabio Abreu wrote: > Hello everybody, > > I try to improve the backfilling proccess without impact my client I/O, > that is a painfull thing when i putted a new osd in my environment. > > I look some options like osd backfill scan max , Can I improve the > performance if I reduce this ? > > Someome recommend parameter to study in my scenario. > > My environment is jewel 10.2.7 . > > Best Regards, > Fabio Abreu > -- > Atenciosamente, > Fabio Abreu Reis > http://fajlinux.com.br > *Tel : *+55 21 98244-0161 > *Skype : *fabioabreureis > ___ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
[ceph-users] Doubts about backfilling performance
Hello everybody, I try to improve the backfilling proccess without impact my client I/O, that is a painfull thing when i putted a new osd in my environment. I look some options like osd backfill scan max , Can I improve the performance if I reduce this ? Someome recommend parameter to study in my scenario. My environment is jewel 10.2.7 . Best Regards, Fabio Abreu -- Atenciosamente, Fabio Abreu Reis http://fajlinux.com.br *Tel : *+55 21 98244-0161 *Skype : *fabioabreureis ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
