I did create the device mapper for multipathing but while testing failover is not working. So my concern is with the hba driver since I am seeing more than expected. Thanks Paras On Thursday, January 7, 2010, Rajagopal Swaminathan <raju.rajsand at gmail.com> wrote: > Greetings, > > On Fri, Jan 8, 2010 at 11:01 AM, Paras pradhan <pradhanparas at gmail.com> wrote: >> Hi Rajagopal, >> >> Do you mean to say this is typical and is resolved after we use device >> mapper multipathing? >> > > IIRC, in about 2008.11 I was tasked build a cluster with SAN. The san > administrator created 3 LUNs and first time around, it showed 12 LUNs. > I think it was RHEL4. Afer installation of the multipathing software > from server vendor site, we got the 3 LUNs properly. But at that time > I did sweat a little. > > Of course assuming you have two qlogic, 2 san switches etc etc. > > In short, most likely yes. > > BTW I am not a storage administrator.... > > Regards, > > Rajagopal > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >