Linux does not automatically clean up after ION Accelerator LUN removals. For RHEL and OL, the required steps for LUN removal are described here:
These instructions also work for SLES.
For all distros, before running multipath –f, run the following command:
dmsetup message mpathXYZ 0 "fail_if_no_path"
where mpathXYZ is the name of the device.