Date: Wed, 11 Aug 2010 18:27:54 +0700 From: Eugene Grosbein <eugen@grosbein.pp.ru> To: Valentin Nechayev <netch@netch.kiev.ua> Cc: geom@freebsd.org, hackers@freebsd.org Subject: Re: Support for WD Advanced Format disks Message-ID: <20100811112754.GA72031@rdtc.ru> In-Reply-To: <20100811060439.GD17926@netch.kiev.ua> References: <86wrry1hwv.fsf@ds4.des.no> <20100811060439.GD17926@netch.kiev.ua>
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On Wed, Aug 11, 2010 at 09:04:39AM +0300, Valentin Nechayev wrote: > > I'm looking into a clean, permanent solution for WD Green drives that > > use 4096-byte physical sectors. To summarize the information I've > > collected so far: > > There is attempt to look from another side - is it really needed? > Captain Obvious says that if one have a new disk, it's easy to format > it properly - i.e. not xxx*16*63 but aligned on 4KB boundary. For > example, set up geometry xxx*64*32 for all new disks and align GPT > partitions on 1MB boundary. As soon as FS requests in FreeBSD are no > less than 4KB in size, this would satisfy any disk. > > If 4KB sectors are our future for a few next years, this shall be > implemented anyway... Also, we have geom_cache for performance-sensetive setups anyway :-) Eugene Grosbein
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