[Lustre-discuss] Lustre installation and configuration problems

[Ms. Megan Larko]

Hi!

I concur with Cliff White.  The "lustre_rmmod" returns those sort of
errors if there is still a Lustre disk mounted.  I have found (with
Lustre version 1.6.7.1) that I have to unmount all Lustre disks first
(hopefully nicely) and then I can run the lustre_rmmod command
typically without errors.

My problems have come from a hung process which cannot be killed
accessing a Lustre disk.   I have to cycle power to the Lustre client
on which the process is hung and the linux shutdown command hangs on
trying to remove the Lustre modules.    I can't remove the modules
while the disk is still mounted (perceived active) and kill -9 PID
isn't working.   My personal behavior for this is to run the linux
shutdown as far it goes (the lustre_rmmod part) and then I  physically
cycle power on the stuck client box.    If there is a better way, I
would like to learn it.

Cheers!
megan