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Date:      Fri, 17 Jun 2011 13:37:38 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        Henri Hennebert <hlh@restart.be>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: ZFS boot inside on the second partition inside a slice
Message-ID:  <201106171337.39104.jhb@freebsd.org>
In-Reply-To: <4DFB898E.4070202@restart.be>
References:  <BANLkTi=drd8vY84_4jqDZTFK%2Bsq=n0Kx9g@mail.gmail.com> <201106161335.46337.jhb@freebsd.org> <4DFB898E.4070202@restart.be>

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On Friday, June 17, 2011 1:06:22 pm Henri Hennebert wrote:
> On 06/16/2011 19:35, John Baldwin wrote:
> > On Thursday, June 16, 2011 8:45:41 am Zhihao Yuan wrote:
> >> Exactly. The MFCed ZFSv28 is different from any patch maintained by
> >> mm@. Maybe some untested changes involved.
> > 
> > Can you try reverting this change:
> > 
> > Author: jhb
> > Date: Thu Apr 28 17:44:24 2011
> > New Revision: 221177
> > URL: http://svn.freebsd.org/changeset/base/221177
> > 
> > Log:
> >   Due to space constraints, the UFS boot2 and boot1 use an evil hack where
> >   boot2 calls back into boot1 to perform disk reads.  The ZFS MBR boot blocks
> >   do not have the same space constraints, so remove this hack for ZFS.
> >   While here, remove commented out code to support C/H/S addressing from
> >   zfsldr.  The ZFS and GPT bootstraps always just use EDD LBA addressing.
> >   
> >   MFC after:    2 weeks
> > 
> > Modified:
> >   head/sys/boot/i386/boot2/Makefile
> >   head/sys/boot/i386/common/drv.c
> >   head/sys/boot/i386/zfsboot/Makefile
> >   head/sys/boot/i386/zfsboot/zfsldr.S
> > 
> I try with this revision (221177) reverted to no avail:
> same error - 'read error'

Hmm, ok.  No other ideas off the top of my head.

-- 
John Baldwin



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