After upgrading from an old kernel to a new kernel version and booting into the new kernel the DRBD logical device was gone.
Think nothing under /proc/drbd.
This is a major problem as I have DRBD running in a cluster, with a heartbeat running between the Primary and Secondary nodes.
After rebooting into the new kernel however, the DRBD device has re-appeared. Has anyone experienced fluctuating behaviour of this sort?
Thanks.
