On Thu, Aug 23, 2012 at 5:48 PM, Jim Schutt <jaschut@xxxxxxxxxx> wrote: > On 08/23/2012 03:26 PM, Tren Blackburn wrote: >> >> On Thu, Aug 23, 2012 at 2:17 PM, Jim Schutt<jaschut@xxxxxxxxxx> wrote: >>> >>> On 08/23/2012 02:39 PM, Tren Blackburn wrote: >>>> >>>> >>>> 2) Increase the number of pgs via ceph.conf (osd pg bits = 7) and >>>> create the cluster. This does not work either as the cluster comes up >>>> with 6 pgs bits per osd still. >>>> re:http://ceph.com/docs/master/config-cluster/osd-config-ref/ >>> >>> >>> >>> I use this regularly. Do you have that in your global section, i.e. >>> >>> [global] >>> osd pg bits = 7 >>> osd pgp bits = 7 >>> >> Hi Jim; >> >> Sorry about the direct reply. I have cc'ed the list. To answer your >> question I put that setting in the [osd] section, not the [global] >> section. How would a person know these settings go in [global]? > > > I'm sorry to admit I haven't learned how to know this > either. I recall trying it in the [osd] section and > not having it work, and thinking maybe the monitor > would need to know, and putting it in the [global] > section would give it access. It worked, so I moved on. Generally speaking, the first word in the config option is the section it belongs in — except when it isn't, as with here. You want it in the global section since both the monitors and several of the config tools invoked by mkcephfs need to see this value. >> Also, >> I could not find documentation about "pgp bits" What is a "placement >> group p bit"? > > > Again, I'm not sure. The default config has pg bits and > pgp bits set to the same value, so I think I assumed it > would be best to have them the same if I changed pg bits. Wherever you see a reference to pgp, it stands for PG placement. It gives us the ability to place x PGs as if they were really only y PGs (x > y, obviously). For now, these should just always match. -- 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
