Why lvm commands show Internal error: Reserved memory not enough. Increase activation/reserved_memory?

Solution Verified - Updated -

Issue

Running lvm commands like lvcreate, lvremove, lvextend shows message:

 Internal error: Reserved memory (19210240) not enough: used 30470144. Increase activation/reserved_memory?

How to increase the activation/reserved memory?

Environment

  • Red Hat Enterprise Linux
  • lvm

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