Unable to blacklist a local disk from multipath

Issue

• I'm am trying to get the following removed from multipath since it is an internal disk:

  # multipath -l
  mpath4 (3600c0ff0001187d84537fe5101000000) dm-9 DELL,PERC H700
  [size=2.2T][features=1 queue_if_no_path][hwhandler=0][rw]
  \_ round-robin 0 [prio=0][active]
   \_ 0:2:1:0  sdb  8:16   [active][undef]
  

• I tried to follow Internal disk device is being detected as multipath device, how to remove it ? but /etc/multipath/wwids does not exist.

• I also tried to follow Blacklist Exceptions by adding adding the following to multipath.conf:

  blacklist {
          wwid 3600c0ff0001187d84537fe5101000000
  }
  

• Followed by:

  # service multipath reload
  

• but the device is still there.

NOTE: I already have physical volumes created on this path. I'm not sure if that has anything to do with it. I would like the physical volume paths to show up as /dev/sdb1, /dev/sdb2 instead of /dev/mpath4a, /dev/mpath4b.