From owner-freebsd-fs@FreeBSD.ORG Sun Mar 28 17:17:11 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 23AEC106564A for ; Sun, 28 Mar 2010 17:17:11 +0000 (UTC) (envelope-from thomas.e.zander@googlemail.com) Received: from mail-ww0-f54.google.com (mail-ww0-f54.google.com [74.125.82.54]) by mx1.freebsd.org (Postfix) with ESMTP id AE9CF8FC08 for ; Sun, 28 Mar 2010 17:17:10 +0000 (UTC) Received: by wwb24 with SMTP id 24so996638wwb.13 for ; Sun, 28 Mar 2010 10:17:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:received:message-id:subject:from:to:content-type; bh=s+n4nvyJWs/tMWthNFcnOKgdNtvYC0cQQAVMJHe+O1c=; b=gm/EgOXXOqPiPWFWBy3qRiOM73kP+Fuq5aFf2gM/DEW28X6IyuApuU60RMyu6DBWoc RqSkd9S5RIJe7+l0Fljwgt92ebdTCswHao98IV/yYoDiGpLiaa20ZpibGUAh9cBV77fi +e0V1MZwHD5oRpz5MnuTqUJdBDqF2A1nFT8oo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=LfUQMs0vH2isjfBxRq/CvI2Vc5kf1euKlbb4sMnorIFmaXtwN7r/70LmKedbthTh5W qGn0sY0sZWmJ96Aw/gRqKVciCBtqBdn78jzhe8ZSXlKB0v1nD3qOPiuHssWmBUyNttoV hMBz6jUAKoypql0OmoASwzXHAbKMCdp8rdiP0= MIME-Version: 1.0 Received: by 10.216.186.211 with HTTP; Sun, 28 Mar 2010 09:49:18 -0700 (PDT) In-Reply-To: <492FB7C5-1B48-46BA-B63F-E7CBF7A0A195@lexasoft.ru> References: <492FB7C5-1B48-46BA-B63F-E7CBF7A0A195@lexasoft.ru> Date: Sun, 28 Mar 2010 18:49:18 +0200 Received: by 10.216.87.66 with SMTP id x44mr2375852wee.96.1269794958753; Sun, 28 Mar 2010 09:49:18 -0700 (PDT) Message-ID: <786602c61003280949s15782d2bh82e2f8dd33a31d88@mail.gmail.com> From: Thomas Zander To: freebsd-fs@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Subject: Re: ZFS raidz and 4k sector disks X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Mar 2010 17:17:11 -0000 On Sun, Mar 28, 2010 at 15:03, Alexey Tarasov wrote: > According to mailing lists, these drives can't be configured to present 4k sectors to OS. Maybe that's a dumb idea, but I am curious. As far as I understand, the following points apply: - EARS and RAIDZ is slow, but - if you make ZFS aware of the 4k sector size (gnop), performance is okay If so, what happens if you configure geli for the whole drive with 4k sectors? Maybe you get AES-128 for free :-) Riggs