On Mon, Jul 1, 2013 at 10:13 AM, Alex Bligh <alex@xxxxxxxxxxx> wrote: > > On 1 Jul 2013, at 17:37, Gregory Farnum wrote: > >> Oh, that's out of date! PG splitting is supported in Cuttlefish: >> "ceph osd pool set <foo> pg_num <number>" >> http://ceph.com/docs/master/rados/operations/control/#osd-subsystem > > Ah, so: > pg_num: The placement group number. > means > pg_num: The number of placement groups. > > Perhaps worth demystifying for those hard of understanding such as > myself. > > I'm still not quite sure how that relates to pgp_num. Pools are sharded into placement groups. That's the pg_num. Those placement groups can be placed all independently, or as if there were a smaller number of placement groups (this is so you can double the number of PGs but not move any data until the splitting is done). -Greg _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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