> FWIW, the xfs -n size=64k option is probably not a good idea. Agreed, moreover it’s a really bad idea. You get memory allocation slowdowns as described in the linked post, and eventually the OSD dies. It can be mitigated somewhat by periodically (say every 2 hours, ymmv) flushing the system’s buffer cache to effectively defragment memory, or possibly by increasing setting vm_min_free_kybtes to a large enough setting based on your physmem. For sure the only real cure is rebuilding all OSD’s with defaults. — Anthony _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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