From owner-freebsd-hackers@FreeBSD.ORG  Fri Jun 29 00:42:44 2012
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From: Marcel Moolenaar <marcel@xcllnt.net>
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To: Pawel Jakub Dawidek <pjd@FreeBSD.org>
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Cc: Doug Rabson <dfr@FreeBSD.org>, Marcel Moolenaar <marcel@FreeBSD.org>,
	Christian Laursen <xi@borderworlds.dk>,
	freebsd-hackers <freebsd-hackers@FreeBSD.org>,
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Subject: Re: [CFC/CFT] large changes in the loader(8) code
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On Jun 28, 2012, at 4:07 PM, Pawel Jakub Dawidek wrote:
>> 
>> I would be having less problems if the mirroring didn't force the backup
>> GPT header in anything but the last sector. [...]
> 
> GPT backup header is placed in the last sector of the mirror device,
> just like the user asked. Gmirror doesn't force anything. User decides
> to put GPT partitioning on the mirror device instead of raw disk.
> Gmirror doesn't even know and doesn't have to know how the user uses
> data area on the mirror device.

This really is a cop-out paragraph.

>> [...] If the metadata was somewhere
>> else, then we wouldn't need to kluge various places to deal with the
>> ambiguity and visible interoperability problems of the various tools and
>> OSes. [...]
> 
> Where is "somewhere else", exactly?

I already suggested a few things in this thread. Go read it.

I'm bored now, so I'll just wait for UEFI booting to be forced upon
those who mirror the whole disk with gmirror. I think that's when
we will have a more substantial and meaningful continuation of this
thread.

-- 
Marcel Moolenaar
marcel@xcllnt.net