When using device-mapper-multipath, the devices appear in three different places. Which device should I use for creating logical volumes?

Solution Verified - Updated -

Issue

  • When  using device-mapper-multipath, the devices appear in three different  places. Which device should I use for creating Physical Volumes for the Volume Groups and Logical Volumes?
  • multipath /dev/dm-x names are getting changed after reboot, dm-x device names are not remaining persistent across system reboots.
  • Need to change default path of a multipath device. I am using multipath and it looks like the default is to create the device under /dev/mapper/mpath#. Then there's a symlink created under /dev/mpath#. I would like to change the default so that the device is created as /dev/mpath# and NOT a symlink?

Environment

  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

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