Date: Wed, 11 Aug 2010 12:30:09 +0100 From: Olivier Smedts <olivier@gid0.org> To: netch@netch.kiev.ua Cc: geom@freebsd.org, hackers@freebsd.org Subject: Re: Support for WD Advanced Format disks Message-ID: <AANLkTi=r810Whv2MpKG1eYpM4g5HM3YkdUpZimCuMcmV@mail.gmail.com> In-Reply-To: <20100811060439.GD17926@netch.kiev.ua> References: <86wrry1hwv.fsf@ds4.des.no> <20100811060439.GD17926@netch.kiev.ua>
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2010/8/11, Valentin Nechayev <netch@netch.kiev.ua>: >> 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. That would not satisfy ZFS, which uses smaller (than 4KB) chunks for small files. That's a big problem on RAID-Z. > > If 4KB sectors are our future for a few next years, this shall be > implemented anyway... > > > -netch- > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" > -- Olivier Smedts _ ASCII ribbon campaign ( ) e-mail: olivier@gid0.org - against HTML email & vCards X www: http://www.gid0.org - against proprietary attachments / \ "Il y a seulement 10 sortes de gens dans le monde : ceux qui comprennent le binaire, et ceux qui ne le comprennent pas."
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