Hi, Looking at: http://ceph.com/docs/master/rados/operations/pools/ It has this description roughly in the middle: --------------- Important Increasing the number of placement groups in a pool after you create the pool is still an experimental feature in Bobtail (v 0.56). We recommend defining a reasonable number of placement groups and maintaining that number until Ceph’s placement group splitting and merging functionality matures. --------------- However, I cannot find any references how to do this? I'm asking since we have a test system with 10TB data with only the default 8 PG's created. So currently the system is throwing 400GB pg's around whenever we test removing disks. The system sometimes wants to put 2x pg's on an OSD which cannot hold it and it winds up with cluster full. If there is ~750GB free on a OSD it might decide to put 2x 400GB pgs on it (even though there are other OSD with even more disk free than that - these disks are exact same type, size and weights). System is running bobcat 0.56.2 The system holds 2 big rbd images and it is not an option to create a new pool with higher pg count and copy them (not enough total space available). Thanks in advance, Cheers, Martin -- 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
