Question about OSD sizes: I have two cluster nodes, each with 4x 800GiB SLC SSD using BlueStore. They boot from SATADOM so the OSDs are data-only, but the MLC SATADOM have terrible reliability and the SLC are way overpriced for this application.
Can I carve off 64GiB of from one of the four drives on a node without causing problems? If I understand the strategy properly, this will cause mild extra load on the other three drives as the weight goes down on the partitioned drive, but it probably won’t be a big deal. Assuming the correct procedure is documented at http://docs.ceph.com/docs/mimic/rados/operations/add-or-rm-osds/, first removing the OSD as documented, zap it, carve off the partition of the freed drive, then adding the remaining space back in. I’m a little nervous that BlueStore assumes it owns the partition table and will not be happy that a couple of primary partitions have been used. Will this be a problem? Thanks, Brian _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
