problem with multipath

m2mthu · 10-29-2009, 03:36 AM

Hi, plz help me
I have some problem with multipath in red hat 5.3

Exp: i have 2 hba on the host, i add 2 lun for host (hba1 - lun1, hba2 - lun2), like this how many luns on my host i can see? (2 or 4), plz explain, thanks

good luck

TBC Cosmo · 10-29-2009, 07:47 AM

If they are unique LUNs being presented to the host through a single HBA and one FC switch or direct attach, then you will see two. If you have zoned the HBAs through two switches then double the count each unique LUN. What is the multipath issue you have?

m2mthu · 10-29-2009, 08:25 PM

Quote:

Originally Posted by TBC Cosmo

If they are unique LUNs being presented to the host through a single HBA and one FC switch or direct attach, then you will see two. If you have zoned the HBAs through two switches then double the count each unique LUN. What is the multipath issue you have?

Hi,
I have two FC switch, but i only see two lun.

In my /dev have two lun: sdc, sdd. After i setup multipath, i see mpath2(sdc), mpath3(sdd). I think it's wrong. But i don't know what i wrong.
I'm beginer.
Thanks.