Best Practices with EMC Powerpath?

[C W_1]

Any out there? Specifically, when SAN allocations are taken away from the sytem, what is the proper thing to do? I know you need to lvremove, vgreduce, but I'm talking more from a powerpath perspective, should you do anything like "powermt remove" or just wait till powerpath refreshes its cache...seems that usually it will eventually pick up on the fact that the path is gone, and a powermt check will prompt you to remove it.

[Steven E. Protter]

Handle the LVM work first as you note.

Then unassign LUN ownership which is usually assigned to Fiber Card World Wide Name on the SAN.

Then you can remove, rename, put back into the pool, do anything you want.

SEP

[Geoff Wild]

powermt config (when adding)...

powermt check (to remove dead paths)...

Rgds...Geoff

[Tim Sanko]

I'd also look at checking the CXTXDX to see if you are a candidate to cleanup the init stuff. See my previous post on tape drive issues for further info.


Always do lvm stuff first. Then the powermt config for newstuff and the powermt check for defunct stuff. The issue then becomes is this a multipathed BCV is you are using timefinder... but that is for a different discussion.

Tim