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Date: Sat, 15 Nov 2014 15:59:34 -0800
From: Peter Grehan <grehan@freebsd.org>
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To: Willem Jan Withagen <wjw@digiware.nl>,
 "freebsd-virtualization@freebsd.org" <virtualization@freebsd.org>
Subject: Re: Trying to run an older head in a recent Bhyve.
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Hi Willem,

> I'm trying to run one of my older VM's and get the crash below in the VM
> when trying to boot...
>
> This happens both on an older BSD:
> FreeBSD 11.0-CURRENT (FREETEST) #1 r273066M: Sun Oct 19 00:59:06 CEST 2014
> As well as on a very recent:
> FreeBSD 11.0-CURRENT (BHYVE00) #0 r274490M: Fri Nov 14 02:42:43 CET 2014
>
> The older 10.0 VM's do boot normally
>
> Any suggestions on what this might be, and/or how to debug this..

  Did the disk image backing file change by any chance ? e.g. from file 
to zvol ?

  What's the version of the VM that has the issue ?

later,

Peter.