On Apr 21, 2011, at 4:28 PM, Adam Wead amsterdamos@gmail.com wrote:

Hi all,

I have a Dell server running cent 5.6, new install, connecting to an IBM DS3500. I have configured iscsi connections using iscsid and can log into the targets on the IBM. I can also mount the LUNs when accessing them from their active controller path. When I throw multipath into the mix, it fails completely. Multipath is working, when I run multipath -ll it shows me the correct active path and it is mapped to a device under /dev/mapper. However, if I try to access the device from that path, no luck. A mount request just hangs and eventually there's a kernel error message.

I'm using the native rdac drivers that came with the OS. Anyone using something similar? My guess is that it's either bad drivers, or a bad multipath config. I started with the default, but after tweaking different parameters, it's still not working.

Any advice is greatly appreciated.

Check the archives, there was someone who posted their multipathd config for an MD3000i a month ago which should be applicable (with a vendor/model name change).

-Ross