On 11/05/2012 06:14 AM, Stefan Priebe - Profihost AG wrote:
Hello list, Is there a way to change the number of pg_num / pgp_num after adding more osds?
The pg_num/pgp_num settings are only used by mkcephfs at install time.
I mean i would like to start with 16 OSDs but i think i'll expand over time to up to 100 OSDs. So i think i need to tune pg_num / pgp_num.
You can specify pg_num when creating a pool: ceph osd pool create <name> <pgnum> But you don't want to have too many (thousands per osd). Being able to change the number of pgs in a pool (pg splitting/merging) is in the works, but in the mean time you can create more pools after you add a bunch of osds to keep your pg/osd ratio around 100. Josh -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
