Broken ZFS boot on upgrade

[Martin Simmons]

>>>>> On Mon, 11 Nov 2019 09:42:48 -0330, Jonathan Anderson said:
> IronPort-SDR: ceFSuzFcg1v+wJx9uExExUpnIS9KKyHX2ru5QfYI5wuUSU/1dtZ5bBhqndGGrT9oQpi3iWnC5y
> 
> On 11/11, Martin Simmons wrote:
> > >>>>> On Sun, 10 Nov 2019 22:16:26 -0330, Jonathan Anderson said:
> > > 
> > >                                                   but when I run `lszfs
> > > zroot/ROOT/default` from the loader prompt it gives me an empty result (so,
> > > e.g., no /boot).
> > 
> > FWIW, I think that is normal unless you have created a child dataset of
> > zroot/ROOT/default.
> 
> Oh I see, so `lszfs` lists datasets rather than contents?

Yes.

> > You can try the ls command, e.g.
> > 
> > ls
> > ls /boot
> > ls /boot/kernel
> > ls /boot/kernel/kernel
> 
> These commands resulted in "i/o error - all block copies unavailable" errors.

That suggests it is having problem accessing the root directory, not just the
boot files.

__Martin