"failed errno 24"/"Too many open files" when running lvm commands on RHEL7.6 with large lun count

Issue

When a large number of devices exist the default ulimit can be reached resulting in Too many open files messages when running lvm commands:

# pvs
  Device open /dev/mapper/mpathel 253:677 failed errno 24
  Device open /dev/mapper/mpathel 253:677 failed errno 24
  Device open /dev/mapper/mpathic 253:933 failed errno 24