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Date:      Tue, 26 May 2009 09:21:02 -0700
From:      George Hartzell <hartzell@alerce.com>
To:        FreeBSD Stable Mailing List <freebsd-stable@freebsd.org>
Subject:   Re: ZFS boot on zfs mirror
Message-ID:  <18972.5870.795005.186542@already.dhcp.gene.com>
In-Reply-To: <alpine.BSF.2.00.0905261353140.8940@woozle.rinet.ru>
References:  <29579856-69F7-4CDC-A52A-B414A40180ED@yellowspace.net> <4A1B0B4F.1020106@h3q.com> <ea7b7b810905260226g29e8cbf5ic75a59b979f6cd42@mail.gmail.com> <alpine.BSF.2.00.0905261353140.8940@woozle.rinet.ru>

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Dmitry Morozovsky writes:
 > On Tue, 26 May 2009, Mickael MAILLOT wrote:
 > 
 > MM> Hi,
 > MM> 
 > MM> i prefere use zfsboot boot sector, an example is better than a long talk:
 > MM> 
 > MM> $ zpool create tank mirror ad4 ad6
 > MM> $ zpool export tank
 > MM> $ dd if=/boot/zfsboot of=/dev/ad4 bs=512 count=1
 > MM> $ dd if=/boot/zfsboot of=/dev/ad6 bs=512 count=1
 > MM> $ dd if=/boot/zfsboot of=/dev/ad4 bs=512 skeep=1  seek=1024
 > MM> $ dd if=/boot/zfsboot of=/dev/ad6 bs=512 skeep=1  seek=1024
 > 
 > s/skeep/skip/ ? ;-)

What is the reason for copying zfsboot one bit at a time, as opposed
to 

  dd if=/boot/zfsboot of=/dev/ad4 bs=512 count=2

g.



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