"primary" Condition for drbd?

[Harald Dunkel <harald.dunkel@xxxxxxxxxx>]

Hi folks,

would it be possible to add a Condition to check if a drbd
resource ( a virtual block device with replication via network,
see https://linbit.com/drbd/) is primary? I checked

	/sys/devices/virtual/block/drbd1

for example, but I haven't found a way to distinguish primary
from secondary block devices yet. Apparently there is no directory
element showing up only for primary mode.


Regards

Harri