Multipath configuration in Redhat Linux

Redhat multipathing Configuration:


A.Prerequesties:

#rpm -q device-mapper-multipath

B.Configure

#cd /etc
#mv multipath.conf multipath.conf.dist
#sed '/^#/d; /^$/d' multipath.conf.dist > multipath.conf

#vi multipath.conf

change to blacklist local harddrive only,

blacklist {
devnode "sda"
}

C. Start the Multipath service 

#service multipathd start
#chkconfig multipathd on

D. Verify the disk paths now

#fdisk -l
#sfdisk -s