• Before starting the vserver
• After starting it.
• Before stopping it.
• After stopping it.

You generally perform tasks such as mounting file system (mapping some directory in the vserver root using "mount --bind").

Here is an example where you map the /home directory as the vserver /home directory.

#!/bin/sh
case $1 in
pre-start)
	mount --bind /home /vservers/$2/home
	;;
post-start)
	;;
pre-stop)
	;;
post-stop)
	umount /vservers/$2/home
	;;
esac