[dm-devel] Multipath setup and rdac questions

[Bryn M. Reeves]

Christian Røsnes wrote:
> Is mpp another type of rdac driver than the one in question here ?

I have no real experience with MPP so there are probably others who 
can give more details but MPP is an entirely separate 3rd-party 
multipath driver framework, a bit like EMC's PowerPath or other 
vendor's multipathing solutions. Afaik, it supports several types of 
device including RDAC.

Part of your problem appears to be that you are trying to use /both/ 
mpp and device-mapper multipath on the same system at the same time. 
Since they both try to do the same job this is guaranteed to lead to 
problems - you need to chose one or the other & get it correctly 
configured for your hardware.

Regards,
Bryn.