device-mapper: table: 253:26: multipath: error getting device  
device-mapper: ioctl: error adding target to table  
device-mapper: table: 253:66: multipath: error getting device  
device-mapper: ioctl: error adding target to table

• RedHat Enterprise Linux 6.5
• device-mapper-multipath

참고사이트 : https://access.redhat.com/solutions/38538

# vim /etc/multipath.conf

blacklist {
       devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
       devnode "^hd[a-z]"
       devnode "^sda$"
}

Or using the WWID of the device:

blacklist {
       devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
       devnode "^hd[a-z]"
       wwid    "1234567890987654321"
}

# service multipathd reload
# multipath -v2