crushtool can simulate mappings for you, it's help/man page should explain everything. Paul -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 On Mon, Sep 2, 2019 at 7:08 PM Robert LeBlanc <robert@xxxxxxxxxxxxx> wrote: > > I'd like to test how reweighting an OSD will change how the PGs map in the cluster. > > I suspect that I'd dump the CRUSH map and PGs in the cluster that I'm interested in then use osdmaptool. I'm not understanding how to use osdmaptool to set the reweight, then query a PG or the entire set of PGs that I'm interested in. I then suspect that if I'm okay with the new map that I could inject it into the cluster instead of having to run reweight on the OSD(s). > > This is a Jewel cluster and I'm trying to calculate OSD usage offline, then inject a map that is more distributed instead of doing a reweight, move the PGs which take a long time to just rinse and repeat over and over again. > > Thanks, > Robert LeBlanc > ---------------- > Robert LeBlanc > PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ Dev mailing list -- dev@xxxxxxx To unsubscribe send an email to dev-leave@xxxxxxx
