RELENG_7 jails on current host

[Julian Elischer]

Mel Flynn wrote:
> Hi,
> 
> I'm looking for some confirmation/caveats for using a -current host and 
> RELENG_7 jails. Mostly I'm wondering whether -current is in good enough shape 
> to host RELENG_7 jails. What I'm trying to accomplish is to have the machine 
> that currently builds packages for -stable machines as well as hosting a 
> number of services (low volume httpd/irc/imap/smtp), can be upgraded to 
> current without significant modification to the jails. The only modification I 
> expect to be making is fake uname output and set certain port related 
> variables for the -stable build server.
> 
> The reason I'm wanting to do this is because I'm happily running current on my 
> work laptop but building ports interferes too much. I figured building ports 
> in a -current jail on a -stable host would not work very well, but I'll 
> happily be corrected on that if that's no problem.
> 
> Jails have been built as per jail(8) manpage, not using ezjail. Nullfs mounts 
> exist to share binaries and trees like /usr/ports.

should work but you may need to have current versions of:
netstat, ifconfig, ps, top and new versions of the libraries they 
want, or, as I sometimes do, copies of those from /rescue.