GPT boot with ZFS RAIDZ "ZFS: i/o error - all block copies unavailable"

[Krzysztof Dajka]

I managed to boot FreeBSD with raidz1 on gpt drives on my workstation.
Well I didn't quite finished booting yet...
But from the beginning.
I tried to install FreeBSD once again instead of raidz2 I chose
raidz1, but it's not the answer. I think that It could be related to
what Norikatsu Shigemura reproduced
http://lists.freebsd.org/pipermail/freebsd-current/2009-October/012935.html
When I used gpart to create my boot slices on 3 drives I increased
size of that slice to 400 sectors. Now my system boots and
>ZFS: i/o error - all block copies unavailable
error is missing.
But I haven't really finish boot part.
Now I'm getting:
Trying to mount root from zfs:zroot
ROOT MOUNT ERROR

So I'll have to figure out what went wrong during fixit installation,
maybe some typo

On 10/28/09, alteriks at gmail.com <alteriks at gmail.com> wrote:
> On Wednesday 28 October 2009 12:10:10 you wrote:
>> I think that is unlikely.  If you type status at this point, does it
>> show all of your drives ONLINE?
>>
> Yes, they we're online.
>
>>>ZFS: can't read MOS
> I'm not quite sure about this line because I copy/pasted from Radek's post.
> I
> will check it and post later when I'll get home.
>