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Date:      Thu, 20 Nov 2008 16:07:50 +0000
From:      Doug Rabson <dfr@rabson.org>
To:        Olivier SMEDTS <olivier@gid0.org>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: ZFSBoot try and bsdlabel bootstrap code
Message-ID:  <16C31872-6A83-4FAB-AC85-213D604CDDE4@rabson.org>
In-Reply-To: <367b2c980811191412h5e0af470k165b37edc2fc5853@mail.gmail.com>
References:  <367b2c980811191412h5e0af470k165b37edc2fc5853@mail.gmail.com>

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On 19 Nov 2008, at 22:12, Olivier SMEDTS wrote:

> Hello,
>
> I want to boot off a ZFS pool (version 13) on an USB stick for testing
> purposes. But I'm stuck with the bsdlabel bootstrap code size...
> I'm using a 2 hours old CURRENT.
>
> # kldload usb2_storage_mass
> # kldload zfs
> # dd if=/dev/zero of=/dev/da0 bs=512 count=32
> # fdisk -BI da0
> # dd if=/dev/zero of=/dev/da0s1 bs=512 count=32
> # bsdlabel -wB -b /boot/zfsboot da0s1
> bsdlabel: boot code /boot/zfsboot is wrong size
>
> Is what I'm trying to do with bsdlabel wrong ?
> I previously tried with the default bootstrap code but I had an
> (expected) "boot: Not ufs" error at boot.
>
> PS : I'm not subscribed to this list.

The process for install zfsboot is a bit manual (and undocumented).  
Try something like this:

	# dd if=/boot/zfsboot of=/dev/da0s1 count=1
	# dd if=/boot/zfsboot of=/dev/ds0s1 skip=1 seek=1024

Alternatively, you might try using the brand new support for GPT that  
I committed yesterday:

	# gpt create -f da0
	# gpt boot -b /boot/pmbr -g /boot/gptzfsboot da0
	# gpt add -t freebsd-zfs da0
	# zpool create mypool da0p2




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