I have configured both ethernet access (throw nsd-servers) and fibre channel access (npiv) to my GPFS -disks. When I mount the filesystems IO-traffic goes through disks and HBA:s if the disks are available. If the disks are not available the filesystems get mounted through nds-servers and IO-traffic goes through en-devices. Unfortunately I haven't find a non-disruptive way to redirect IO-traffic to go through disks instead of ethernet.
How do I change the traffic routing from ethernet to disk without unmounting and mounting?