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Date: Thu, 30 Oct 2014 16:35:31 -0700
From: Peter Grehan <grehan@freebsd.org>
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To: Andrea Brancatelli <abrancatelli@schema31.it>
Subject: Re: bhyve machine not starting after upgrading
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Hi Andrea,

> Mmmm Peter, the -e seems to be totally ignored.

  Ok, looks like the ZFS probe code will override those :(

> Type '?' for a list of commands, 'help' for more detailed help.
> OK show
> LINES=24
> boot_serial=1
> console=userboot
> currdev=zfs:repository:
> interpret=OK
> loaddev=zfs:repository:
> prompt=${interpret}
> rootdev=disk0p2
> smbios.bios.vendor=BHYVE
> OK

  How about if you set loaddev to disk0p2, and see if that allows a boot ?

  Another solution, though not pretty, is to build a version of userboot 
that doesn't have ZFS enabled. Modify 
sys/boot/userboot/userboot/Makefile and remove the MK_ZFS section, and 
copy userboot.so from the build to /boot/userboot.so and the host. This 
should give you back the behaviour from 10.0.

later,

Peter.