Date: Tue, 16 Jul 2013 17:28:55 -0700 From: =?ISO-8859-1?Q?Gezeala_M=2E_Bacu=F1o_II?= <gezeala@gmail.com> To: Freddie Cash <fjwcash@gmail.com> Cc: FreeBSD Filesystems <freebsd-fs@freebsd.org> Subject: Re: Slow resilvering with mirrored ZIL Message-ID: <CAJKO3mW=ahm7sBdjGc-b2tN3D7%2BQH7gR7UPt24RsqUdZf=%2BjvA@mail.gmail.com> In-Reply-To: <CAOjFWZ5CWV3UZRppM3nTehfTPaw1N%2Bw6LjsEZZGxE16DOkS%2BGA@mail.gmail.com> References: <CABBFC07-68C2-4F43-9AFC-920D8C34282E@unixconn.com> <51D42107.1050107@digsys.bg> <2EF46A8C-6908-4160-BF99-EC610B3EA771@alumni.chalmers.se> <51D437E2.4060101@digsys.bg> <E5CCC8F551CA4627A3C7376AD63A83CC@multiplay.co.uk> <CBCA1716-A3EC-4E3B-AE0A-3C8028F6AACF@alumni.chalmers.se> <20130704000405.GA75529@icarus.home.lan> <C8C696C0-2963-4868-8BB8-6987B47C3460@alumni.chalmers.se> <20130704171637.GA94539@icarus.home.lan> <2A261BEA-4452-4F6A-8EFB-90A54D79CBB9@alumni.chalmers.se> <20130704191203.GA95642@icarus.home.lan> <43015E9015084CA6BAC6978F39D22E8B@multiplay.co.uk> <CAOjFWZ4obK1cSmvTpW%2Bt4xKdMf%2BkJV5w-sujDT1AZoepj%2B5YrA@mail.gmail.com> <3CFB4564D8EB4A6A9BCE2AFCC5B6E400@multiplay.co.uk> <51D6A206.2020303@digsys.bg> <CAOjFWZ5CWV3UZRppM3nTehfTPaw1N%2Bw6LjsEZZGxE16DOkS%2BGA@mail.gmail.com>
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On Fri, Jul 5, 2013 at 6:08 PM, Freddie Cash <fjwcash@gmail.com> wrote: > > ZFS- on-Linux has added this as "-o ashift=" property for zpool create. > > There's a threat on the illumos list about standardising this s across all > ZFS- using OSes. > > > +1 on this. We tested zfs-on-linux last year and it does automatically handle disk partitioning for correct alignment. What we do is just add ashift=12 option during zpool create. No more gpart/gnop/ashift/import steps. http://zfsonlinux.org/faq.html#HowDoesZFSonLinuxHandlesAdvacedFormatDrives Back to FreeBSD ZFS, After reading the thread, I'm still at a loss on this (too much info I guess).. regarding gpart/gnop/ashift tweaks for alignment, do we still need to perform gpart on newly purchased (SSD/SATA/SAS) Advanced Format drives? Or, skip gpart and proceed with gnop/ashift only?
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