MP/IO that is not dependant on the WWID of the underlying multipath device

Latest response

Causes no end of problems when migrating between SAN solutions when your server boots from SAN using device-mapper-multipath.

This is because multipath devices are hardcoded to the actual WWID of the lun (via /var/lib/multipath/bindings).

Migrate/replicate your boot lun to a new lun, the WWID changes and your server will no longer boot.

Responses

I suggest in this regard taht there should be one of the two options:

1- WWID sould be detected (Newly attached & existing) asking the user wether to make it paramanet for future connectivity or ignore it.But there should be clear indication for the newly discovered WWIDs and the existing ones.

2- OrThere should be separate utility that can discover WWIDs,show all the available LUNs,show all HOSTs and then can configure MPios under one utility.