On 04/06/2017 09:34 AM, Stanislav Kopp wrote:
Hello, I'm evaluate ceph cluster, to see if you can use it for our virtualization solution (proxmox). I'm using 3 nodes, running Ubuntu 16.04 with stock ceph (10.2.6), every OSD uses separate 8 TB spinning drive (XFS), MONITORs are installed on the same nodes, all nodes are connected via 10G switch. The problem is, on client I have only ~25-30 MB/s with seq. write. (dd with "oflag=direct"). [..]
8TB size suggest these are some kind of "archive" drives (SMR drives). Is that correct? If so, you may want to use non-SMR drives, because Ceph is not optimized for those.
-- Piotr Dałek piotr.dalek@xxxxxxxxxxxx https://www.ovh.com/us/ _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
