Hi Loic, I am getting a lot of error messages in system log file while preparing the device. Can you please tell me what is wrong here? Ceph version: 10.2.2 The command I am using: ceph-deploy purge ca-ostest433 ceph-deploy purgedata ca-ostest433 ceph-deploy new ca-ostest433 echo "osd pool default size = 1" >> ceph.conf ceph-deploy install ca-ostest433 ceph-deploy mon create-initial ceph-deploy mon create ca-ostest433 ceph-deploy gatherkeys ca-ostest433 ceph-deploy disk zap ca-ostest433:sdb ceph-deploy osd prepare ca-ostest433:sdb ceph status Error message that I got in the system log : cat /var/log/messages: Aug 1 05:59:39 ca-ostest432 sh: File "/usr/lib/python2.7/site-packages/ceph_disk/main.py", line 4994, in run Aug 1 05:59:39 ca-ostest432 sh: main(sys.argv[1:]) Aug 1 05:59:39 ca-ostest432 sh: File "/usr/lib/python2.7/site-packages/ceph_disk/main.py", line 4945, in main Aug 1 05:59:39 ca-ostest432 sh: args.func(args) Aug 1 05:59:39 ca-ostest432 sh: File "/usr/lib/python2.7/site-packages/ceph_disk/main.py", line 4703, in <lambda> Aug 1 05:59:39 ca-ostest432 sh: func=lambda args: main_activate_space(name,args), Aug 1 05:59:39 ca-ostest432 sh: File "/usr/lib/python2.7/site-packages/ceph_disk/main.py", line 3722, in main_activate_space Aug 1 05:59:39 ca-ostest432 sh: reactivate=args.reactivate, Aug 1 05:59:39 ca-ostest432 sh: File "/usr/lib/python2.7/site-packages/ceph_disk/main.py", line 3009, in mount_activate Aug 1 05:59:39 ca-ostest432 sh: e, Aug 1 05:59:39 ca-ostest432 sh: ceph_disk.main.FilesystemTypeError: Cannot discover filesystem type: device /dev/disk/by-partuuid/00000000-0000-0000-0000-00000 0000000: Command '/sbin/blkid' returned non-zero exit status 2 Aug 1 05:59:39 ca-ostest432 python: detected unhandled Python exception in'/usr/sbin/ceph-disk' Aug 1 05:59:39 ca-ostest432 abrt-server: Not saving repeating crash in '/usr/sbin/ceph-disk' Aug 1 05:59:39 ca-ostest432 sh: Traceback (most recent call last): Aug 1 05:59:39 ca-ostest432 sh: File "/usr/sbin/ceph-disk", line 9, in <module> Aug 1 05:59:39 ca-ostest432 sh: load_entry_point('ceph-disk==1.0.0', 'console_scripts', 'ceph-disk')() Aug 1 05:59:39 ca-ostest432 sh: File "/usr/lib/python2.7/site-packages/ceph_disk/main.py", line 4994, in run Aug 1 05:59:39 ca-ostest432 sh: main(sys.argv[1:]) Aug 1 05:59:39 ca-ostest432 sh: File "/usr/lib/python2.7/site-packages/ceph_disk/main.py", line 4945, in main Aug 1 05:59:39 ca-ostest432 sh: args.func(args) Aug 1 05:59:39 ca-ostest432 sh: File "/usr/lib/python2.7/site-packages/ceph_disk/main.py", line 4382, in main_trigger Aug 1 05:59:39 ca-ostest432 sh: raise Error('return code ' + str(ret)) Aug 1 05:59:39 ca-ostest432 sh: ceph_disk.main.Error: Error: return code 1 Thanks, Muminul -- 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