Date: Thu, 21 Jan 2010 08:00:02 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-stable@freebsd.org Cc: Charles Sprickman <spork@bway.net> Subject: Re: 32-bit jails on a 64-bit system? Message-ID: <201001210800.02417.jhb@freebsd.org> In-Reply-To: <alpine.OSX.2.00.1001210142470.815@hotlap.local> References: <alpine.OSX.2.00.1001210142470.815@hotlap.local>
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On Thursday 21 January 2010 1:51:36 am Charles Sprickman wrote: > Howdy, > > I saw this little tidbit in the 8.0 Release Notes... > > ---- > The jail(8) subsystem has been updated. Changes include: > > Compatibility support which permits 32-bit jail binaries to be used on > 64-bit systems to manage jails has been added. > ---- > > I know prior to 8.0 with some fancy footwork you could do some interesting > things (for example, I have a jail running a bunch of 32-bit 4.11 stuff on > a 7.2 amd64 box), but it was not easy. The comment is a bit misleading, it just means you can use an i386 /usr/sbin/jail binary on an amd64 system (presumably the same is true for other jail-related programs like jls). It's probably not useful for the vast majority of folks. Perhaps with nested jails it could be useful as a 32-bit jail on a 64-bit host can create child jails w/o needing to copy the 64-bit jail binary from the host into the jail. There are still several binaries such as ps that need to be 64-bit, even in a 32-bit jail. -- John Baldwin
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