[Linux-HA] Force switch with DRBD

[DucaConte Balabam]

Hello,
I've a cluster using heartbeat v2 and drbd in master/slave configuration.

It's:
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Last updated: Tue Mar  4 09:49:30 2008
Current DC: rman1c (875afc12-b88e-4940-9816-218d2a5911c3)
2 Nodes configured.
2 Resources configured.
============

Node: rman1a (4d7bd4ec-c121-4b13-a2d4-aec820ea36d5): online
Node: rman1c (875afc12-b88e-4940-9816-218d2a5911c3): online

Master/Slave Set: ms-drbd0
     drbd0:0     (heartbeat::ocf:drbd):  Master rman1a
     drbd0:1     (heartbeat::ocf:drbd):  Started rman1c
Resource Group: Oracle
     FS  (heartbeat::ocf:Filesystem):    Started rman1a
     V_IP        (heartbeat::ocf:IPaddr2):       Started rman1a
     Ora_DB      (heartbeat::ocf:oracle):        Started rman1a
     Ora_LSNR    (heartbeat::ocf:oralsnr):       Started rman1a

How can I force all resources to move to the other node? There's  acommand?

Thanks
Stefano