Re: [ceph-users] CephFS pg ratio of metadata/data pool

2017-03-16 Thread John Spray
On Thu, Mar 16, 2017 at 11:12 AM, TYLin wrote: > Hi all, > > We have a CephFS which its metadata pool and data pool share same set of > OSDs. According to the PGs calculation: > > (100*num_osds) / num_replica That guideline tells you rougly how many PGs you want in total -- when you have multipl

[ceph-users] CephFS pg ratio of metadata/data pool

2017-03-16 Thread TYLin
Hi all, We have a CephFS which its metadata pool and data pool share same set of OSDs. According to the PGs calculation: (100*num_osds) / num_replica If we have 56 OSDs, we should set 5120 PGs to each pool to make the data evenly distributed to all the OSDs. However, if we set metadata pool an