On Apr 21, 2011, at 4:28 PM, Adam Wead <amsterda...@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

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