I found myself fighting to unistall PernixFVP VIB on some hosts and I using the command :
esxcli software vib remove --maintenance-mode -n "pernixcore-vSphere5.5.0" -f
I was getting the following error
“Output: rm: can’t remove ‘/tardisks/pernixco.v00′: Device or resource busy’
Daemon wasn’t running:
however some processes were still running:
Checking the Pernix unistall script at /opt/pernixdata/bin/prnxnistall.sh
I realised there’s also a logger daemon which had to be stopped
stopping the logger solved the problem for me! vib unistalled!