Date: Fri, 7 Oct 2011 17:41:59 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: "Andrey V. Elsukov" <bu7cher@yandex.ru> Cc: Garrett Cooper <yanegomi@gmail.com>, Glen Barber <gjb@freebsd.org>, Poul-Henning Kamp <phk@phk.freebsd.dk>, freebsd-current@freebsd.org, Benjamin Kaduk <kaduk@mit.edu>, Arnaud Lacombe <lacombar@gmail.com> Subject: Re: aliasing (or renaming) kern.geom.debugflags Message-ID: <alpine.BSF.2.00.1110071734140.4137@wonkity.com> In-Reply-To: <4E8F5D47.9070904@yandex.ru> References: <81477.1318015137@critter.freebsd.dk> <4E8F55CC.3060302@FreeBSD.org> <4E8F5D47.9070904@yandex.ru>
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On Sat, 8 Oct 2011, Andrey V. Elsukov wrote: > On 07.10.2011 23:41, Glen Barber wrote: >> In my experience, without kern.geom.debugflags=16, the MBR will not be >> written to the memstick, leaving you with what would effectively be a >> coaster in the not-so-distant past. > > The problem is that this bad suggestion is everywhere in the Internet. > And users use it always even when it not needed. I think it is bad idea > add it in the our official documentation. > When you doing all in the right way using debugflags=16 is not needed. > And it is really dangerous when you doing something what you do not know > exactly. Since we're talking about this, could you review the usage in the gmirror section of the Handbook GEOM chapter: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/geom-mirror.html Seems like that is a valid non-debugging use, to allow the last block to be written.
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