From owner-freebsd-hackers@FreeBSD.ORG  Wed Jun 27 17:55:37 2012
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From: Marcel Moolenaar <marcel@xcllnt.net>
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Date: Wed, 27 Jun 2012 10:55:19 -0700
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References: <4FE9B01C.30306@yandex.ru> <201206261337.11741.jhb@freebsd.org>
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To: "Andrey V. Elsukov" <bu7cher@yandex.ru>
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Cc: Doug Rabson <dfr@freebsd.org>, Marcel Moolenaar <marcel@freebsd.org>,
	Pawel Jakub Dawidek <pjd@freebsd.org>,
	freebsd-hackers <freebsd-hackers@freebsd.org>,
	Andriy Gapon <avg@freebsd.org>,
	freebsd-current <freebsd-current@freebsd.org>
Subject: Re: [CFC/CFT] large changes in the loader(8) code
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On Jun 26, 2012, at 9:50 PM, Andrey V. Elsukov wrote:

> If the primary GPT is corrupt, software must check the last LBA of the =
device to see if it has a
> valid GPT Header and point to a valid GPT Partition Entry Array."
>=20
> For the FreeBSD an each GEOM provider can be treated as disk device.
> So, i don't see anything criminal if we will add some quirks in the =
our loader
> for the better supporting of our technologies.

You can't just re-interpret standards to match a context you know very =
well
isn't applicable and consequently redefine what the word "device" means.
You're on a slippery slope and while you may not see it as a problem, =
you
do make it a problem for FreeBSD users. It's our users we should be =
keeping
in mind when we solve problems.

> If a user wants modify GPT in the disk editor from the another OS,
> he can do it, and it should work. The result depends only from the =
partition editor,
> it might overwrite the last sector and might don't.

Right. Another happy user that sees his/her FreeBSD installation =
destroyed
or degraded (no mirroring, warning messages about corrupted GPT, etc) =
for
no apparent reason and without any kind of warning that what he/she is =
doing
is potentially harmful... That's the spirit!

--=20
Marcel Moolenaar
marcel@xcllnt.net