Re: [ceph-users] Reducing I/O when increasing number of PGs

2014-01-22 Thread bf
Gregory Farnum writes: > > On Wed, Jan 22, 2014 at 9:13 AM, Caius Howcroft > > I want to double the number of pgs available for a pool, however I > > want to reduce as much as possible the resulting I/O storm (I have > > quite a bit of data in these pools). > > > > What is the best way of doin

Re: [ceph-users] Reducing I/O when increasing number of PGs

2014-01-23 Thread bf
Gregory Farnum writes: > Yes, Ceph does all the heavy lifting. Multiple PGs with the same OSDs > can happen (eg, if you only have two OSDs, all PGs will be on both), > but it behaves about as well as is possible within the configuration > you give it. > -Greg > Software Engineer #42http://in