Is there any doucmentation other than this for for someone who runs RHEL boxes and wants to use PowerPath?

EMC ® PowerPath ® for Linux Version 5.7 Installation and Administration Guide P/N 300-014-166 REV 02

I am completely boot to san. I have a few existing systems that are LVM, never had the native multipathing configured, and have had PowerPath installed.

I also have a handful of systems that are boot to san where the native multipath driver is in use. I prefer this becuase I know how to configure multipathd and make it work. Powerpath for Linux is a huge headache for me.

I have searched the forums and the internet. I can find 5 or 6 different blogs that have some notes or tips on installing RH and using powerpath, but every one has a completely different set of instructions to install a new system... I have dealt with my sales team and support engineers. Getting someone who knows how Linux works with Powerpath is nearly impossible.

I've never gotten an answer from anyone at EMC about how to make powerpath update the links in /dev/disk/by-label - So if I do a disk rescan on the host, all of those links are reset from the emcpower devices to the /dev/sdX devices... I have to reboot to add a disk, and be able to mount the emcpower device by label.

Am I missing something, or should I just stick with the native multipath setup?