Hi Mika, 2014-10-20 11:16 GMT+02:00 Vickie CH <mika.leaf666@xxxxxxxxx>: > 2.Use dd command to create a 1.2T file. > #dd if=/dev/zero of=/mnt/ceph-mount/test12T bs=1M count=12288000 I think you're off by one "zero" 12288000/1024/1024 11 Means you're instructing it to create a 11TB file on a 1.5T volume. Cheers Benedikt _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com