5.4. Enabling your resource for the first time

After you have completed initial resource configuration as outlined in the previous sections, you can bring up your resource.

Each of the following steps must be completed on both nodes.

Please note that with our example config snippets (resource r0 { … }), <resource> would be r0.

Create device metadata. This step must be completed only on initial device creation. It initializes DRBD’s metadata:

# drbdadm create-md <resource>
v08 Magic number not found
Writing meta data...
initialising activity log
NOT initializing bitmap
New drbd meta data block sucessfully created.

Enable the resource. This step associates the resource with its backing device (or devices, in case of a multi-volume resource), sets replication parameters, and connects the resource to its peer:

# drbdadm up <resource>

Observe /proc/drbdDRBD’s virtual status file in the /proc filesystem, /proc/drbd, should now contain information similar to the following:

# cat /proc/drbd
version: 8.4.1 (api:1/proto:86-100)
GIT-hash: 91b4c048c1a0e06777b5f65d312b38d47abaea80 build by buildsystem@linbit, 2011-12-20 12:58:48
 0: cs:Connected ro:Secondary/Secondary ds:Inconsistent/Inconsistent C r-----
    ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:524236
[Note]Note

The Inconsistent/Inconsistent disk state is expected at this point.

By now, DRBD has successfully allocated both disk and network resources and is ready for operation. What it does not know yet is which of your nodes should be used as the source of the initial device synchronization.