I completely agree that the capability of running jails like that is awesome, and truth be told my original intention.
For some of my jails that is how I run them too. Especially where I am being especially paranoid about security. I was trying to answer about 'general use/unexpected gotchas' scenario.
We deal with the hands we are given. I wish I could run it as tight as that on all of my boxes, but the bosses I deal with do not want to waste money on upgrading old infrastructure but still get mad when it isn't running. So fat jails are my best compromise. My other option was a virtualbox/vmware setup.
For some of my jails that is how I run them too. Especially where I am being especially paranoid about security. I was trying to answer about 'general use/unexpected gotchas' scenario.
We deal with the hands we are given. I wish I could run it as tight as that on all of my boxes, but the bosses I deal with do not want to waste money on upgrading old infrastructure but still get mad when it isn't running. So fat jails are my best compromise. My other option was a virtualbox/vmware setup.