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

Solution Verified - Updated -

Issue

  • I have many disks on my server, not all of which are assigned to LVM
  • The default LVM filter of filter = [ "a/.*/" ] causes extra unnecessary I/O testing for LVM devices at boot.
  • LVM commands report I/O errors against passive paths of multipath devices.

Environment

  • Red Hat Enterprise Linux (RHEL) 4, 5, 6, 7, 8
  • Logical Volume Manager (LVM/LVM2)

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