Q-IO Question

you could try telling PowerPath to stop managing particular path/devices ..

Thank you for the response. By manage, do you mean powermt remove? The docs state "On all platforms except AIX, powermt_remove does remove a path...if open." Since these are AIX hosts, does that mean if a path is open, it will be removed? Also, and more important, how do I restart, powermt config?

Harold

i was looking at "powermt manage" and "powermt unmanage" commands ..unfortunately i don't see an option to "unmange" a particular path ..you have to unmanage particular device.

In my experience, unfortunately, the only way to clear the Queued IO stats column is a reboot...

null

Thanks again for the responses.
When all else fails, RTFM. The docs on PP 5.1 reveal a new (from 4.5 docs) command for AIX and Solaris; powermt disable/enable. This sounds like it may be the silver bullet I was looking for. Since my suspect hosts were at 4.5.1, it wouldn't have helped in this case, but it will spur me to upgrade in case it will do what I want in the future. Until then, it looks like a stuck Q IO means a reboot.

Harold

Sounds like conventional wisdom is that a reboot is in order when Queued I/O gets "stuck."

Thanks for the input.