[dm-devel] Different Path priorities for iSCSI and FC paths to a combination lun.

[Tore Anderson]

Hi,

* Srinivas Ramani

> I would be grateful to learn from this forum on how one would be able
> to have different path priorities for a FC / iSCSI  paths to a
> multiprotocol FC/iSCSI combination lun using device mapper . The
> intention is that a  FC path should have a higher priority than an
> iSCSI path to the same lun. Is it possible to do it with a
> configuration change or would one need to  add this feature to the 
> mpath_prio_alua  code.

Make a small wrapper script that invokes mpath_prio_alua and also checks
if the path is to a iSCSI volume or not (you can probably determine this
by looking somewhere beneath /sys/block/$dev/).  If it is, add 100 to
whatever mpath_prio_alua returned, and print the sum.

Regards
-- 
Tore Anderson