What is LVM's filter setting, and how do I configure it in RHEL?

Issue

• The server has multiple disks attached, not all of which are assigned to LVM.
• The default LVM filter filter = [ "a/.*/" ] and global_filter = [ "a/.*/" ] causes unnecessary I/O scanning across devices at boot.
• LVM commands report I/O errors against passive paths of multipath devices.
• LVM commands report "Found duplicate" UUID detection events

• The pvs and pvscan commands display warnings similar to the following:

  WARNING: Not using lvmetad because duplicate PVs were found.
  :
  WARNING: PV <uuid> on /dev/sdX was already found on /dev/mapper/mpatha.
  WARNING: PV <uuid> prefers device /dev/mapper/mpatha becasue device is used by LVM.