hi without "osd journal size" specified in ceph.conf the mkcephfs stopps with: /usr/bin/cosd -c /etc/ceph/ceph.conf --monmap /tmp/monmap.26881 -i 0 -- mkfs --osd-data /ceph/osd0 ** WARNING: Ceph is still under heavy development, and is only suitable for ** ** testing and review. Do not trust it with important data. ** mount failed to open journal /ceph/osd0/journal: Inappropriate ioctl for device error creating empty object store in /ceph/osd0: Inappropriate ioctl for device all is ok if "osd journal size = 100" is configured in ceph.conf - Thomas -- 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