vserver to apply settings without reboot.
It would be nice for the vserver module to allow you to update a client's vserver without rebooting their vps.
For instance, if i want to upgrade diskspace, or ram, i can do this from the command line via
(assume 101 as vps id)
vzctl set 101 --physpages 1024M:1024M --save
or upgrade diskspace
vzctl set 101 --diskspace 40G:40G --save
The above commands would apply the new settings to the vps without the need to restart the vps, and would also save those settings to the config file.