[rfc] replacing /boot/kernel.old with a unique directory name

[Eduardo Morras]

At 22:06 13/08/2011, Steven Hartland wrote:
>----- Original Message ----- From: "Alexander Best" <arundel at freebsd.org>
>
>>i just had the following idea: how about instead of copying the 
>>current kernel
>>to /boot/kernel.old and then installing the new one under /boot/kernel as the
>>results of target installkernel, we create a unique directory name 
>>for the old
>>kernel?
>
>The default size of / is likely your biggest problem.

Don't know how much compresable is /boot/kernel.old but tar with -z 
or -j may be a workaround. We can extract on demand and swap current 
/boot/kernel  with new /boot/kernel. Other way of do it is link 
/boot/kernel  to current kernel and update it, but i don't know 
(again) if it would work in single user mode.

>    Regards
>    Steve