4.x binaries on a 5.x machine ...

Glenn Dawson glenn at antimatter.net
Tue Jun 21 06:30:39 GMT 2005

At 11:24 PM 6/20/2005, Marc G. Fournier wrote:

>I'm looking at adding my first 5.x server onto our network, but am 
>wondering how 'backward compatible' things are still ...
>Mainly, could I run a 4.x jail'd environment on a 5.x server, or would I 
>have to upgrade the jail first?

This option from the GENERIC kernel config in 5.4 would seem to suggest 
that it would work.... though I haven't tried it myself.

options         COMPAT_FREEBSD4         # Compatible with FreeBSD4


>Long term goal is to move all boxes over to 5.x, but I can't do it all at 
>once ... I also want to spend some time testing/making sure that 5.x will 
>work in our environment, which means any jail's I move over to the server 
>need to be able to be copied back again to a 4.x server if things don't 
>work ... so leaving the jail environment itself "4.x" is prefer'd ...
>Thanks ...
>Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
>Email: scrappy at hub.org           Yahoo!: yscrappy              ICQ: 7615664
>freebsd-stable at freebsd.org mailing list
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