drbd 8.3 hard drive failure recovery

drbdadm attach r0
DRBD module version: 8.3.10
   userland version: 8.3.8
you should upgrade your drbd tools!
0: Failure: (119) No valid meta-data signature found.

    ==> Use 'drbdadm create-md res' to initialize meta-data area. <==

Command 'drbdsetup 0 disk /dev/sda3 /dev/sda3 internal --set-defaults --create-device --on-io-error=call-local-io-error' terminated with exit code 10

 drbdadm create-md r0
DRBD module version: 8.3.10
   userland version: 8.3.8
you should upgrade your drbd tools!
Writing meta data...
initializing activity log
NOT initialized bitmap
New drbd meta data block successfully created.
 

drbdadm attach r0

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