Hi I want to have multipath manage only the CLARiiON LUN that I boot from (LUN 0). So I know that I can specify the following in /etc/multipath.conf: blacklist { wwid * } blacklist_exceptions { wwid nnnnnnnnnn } The wwid value is different for every CLARiiON LUN. So, if I want to automate the process of adding the 'wwid' value to the blacklist, what utility can I use to specify a LUN number, and find the WWN of the LUN? Thanks! tl Terry Lemons Backup Platforms Group EMC² where information lives 4400 Computer Drive, MS D239 Westboro MA 01580 Phone: 508 898 7312 Email: Lemons_Terry@xxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel