Date: Sun, 21 Mar 2010 11:45:18 +0100 From: Olivier Smedts <olivier@gid0.org> To: Thiago Damas <tdamas@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: ATA 4K sector issues Message-ID: <367b2c981003210345y4f8e661aib0b273c29ea00dbd@mail.gmail.com> In-Reply-To: <f8e3d83f1003171417s60196803ra4884dae487edb9a@mail.gmail.com> References: <alpine.BSF.2.00.1003171114280.74067@mignon.ki.iif.hu> <86tysf58a2.fsf@ds4.des.no> <alpine.BSF.2.00.1003171652260.74067@mignon.ki.iif.hu> <f8e3d83f1003171034m5e75eae4r5e8b31d88d361d3b@mail.gmail.com> <367b2c981003171112n785ea9d4q21d00b533819ca67@mail.gmail.com> <f8e3d83f1003171117k20d553b7y7ce4c3c8ed2f5c96@mail.gmail.com> <201003172023.o2HKNNbj069321@apollo.backplane.com> <201003172111.o2HLBIgJ069873@apollo.backplane.com> <f8e3d83f1003171417s60196803ra4884dae487edb9a@mail.gmail.com>
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2010/3/17 Thiago Damas <tdamas@gmail.com>: > =A0I'll try tomorrow more zfs tests, with 1M alignment on begining of dis= k. > =A0But I also remember that zfs block size its 128k, but metadata can be = of > dynamic size. And we can use compressed files too. ZFS block size for data is not fixed at 128k, search for recordsize in the zfs man page. > =A0There is a sysctl, md_compress, that I turned out in my tests, but not > working as expected. > =A0Why using gnop -S 4096 works well? Interesting thread for issues with actual 4k disks : http://opensolaris.org/jive/thread.jspa?messageID=3D447926 I'm waiting for a jumper on those 4k disks to turn off the "legacy" 512b mo= de. > > Thiago > _______________________________________________ > 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= " > --=20 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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