respawn fails on HP servers

[dyasny]

The previous run of hpacucli remains locking in memory, so a call to respawn will produce:

Error: Another instance of ACU is already running (possibly a service). Please
terminate the ACU application before running the ACU CLI.

In my scenario, there were no lockfiles to be found under /opt/compaq or any mutex references in /dev/shm. Nothing HP related in ps either, only thing that helps is a reboot, since the pxe environment has no strace for debugging

[ErwanAliasr1]

As per http://uppayinix.blogspot.fr/2010/10/hpacucli-error-another-instance-of-acu.html, it seems to be related to a blocked semaphore.

If you have ti issue again, please provide a ps -a and ipcs -p.