fixing a busted ZFS upgrade

[Martin Simmons]

>>>>> On Sat, 02 Apr 2011 07:34:40 -0700, David Newman said:
> 
> Thanks for this script. Problem is, I can't get to the point where I can
> run it.

The script is used to perform the upgrade, so it would be too late for you
anyway (it would probably make things worse).

   
>         I've tried booting from 8.1 and 8.2 mfsBSD ISOs but both hang at
> loader.conf.

Have you tried the regular FreeBSD installation ISO?  That doesn't know about
ZFS by default, but you can enter Fixit mode with "Use the live filesystem
CDROM/DVD" and load the modules using

kldload /dist/boot/kernel/opensolaris.ko
kldload /dist/boot/kernel/zfs.ko

__Martin