From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1PzWSs-0001xb-MH for garchives@archives.gentoo.org; Tue, 15 Mar 2011 15:47:19 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id C602B1C015; Tue, 15 Mar 2011 15:45:49 +0000 (UTC) Received: from mail-fx0-f53.google.com (mail-fx0-f53.google.com [209.85.161.53]) by pigeon.gentoo.org (Postfix) with ESMTP id 6F44E1C015 for ; Tue, 15 Mar 2011 15:45:49 +0000 (UTC) Received: by fxm11 with SMTP id 11so952082fxm.40 for ; Tue, 15 Mar 2011 08:45:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:message-id:from:to:subject:date:user-agent :in-reply-to:references:mime-version:content-transfer-encoding :content-type; bh=7ViFGmAzYWpEWMMvHpPdfWKIWxsLWWctN07Ld0jBbfk=; b=xNEAO0Y44CdseDX7cnSvNAvhxrkYp+Prwg1dNk3TkJHBIdYSX0x1ycNPX3atbGf2dF VjVCKnrwBTXQYpVr6X6WpioqC+C9WYyZedMG0oKIz1magII9x8spGXszc/jDod1e53vy t5Yo9bj6yoHXYWSs7F/Rr48Q/DpwsSepXpB6k= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=message-id:from:to:subject:date:user-agent:in-reply-to:references :mime-version:content-transfer-encoding:content-type; b=talP9zNI5lLzV2bJcsSBo4kqv8kvnsv7+NgrNROTrcwhaAG4LXXJGSJ3v7Q/3ENUdM pFFHwbt31Atc5nji4FZuxbOvqIfVF1PdG3+BDaeHgmd5LjxfAm8I8wokPDSM2VEiuu7E JFwuEbeDiAWaD0TiUVRGTFPMs1Wju4VXWsoOM= Received: by 10.223.73.198 with SMTP id r6mr2819952faj.109.1300203916893; Tue, 15 Mar 2011 08:45:16 -0700 (PDT) Received: from energy.localnet (p4FC74820.dip0.t-ipconnect.de [79.199.72.32]) by mx.google.com with ESMTPS id c11sm3683202fav.2.2011.03.15.08.45.13 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 15 Mar 2011 08:45:14 -0700 (PDT) Message-ID: <4d7f898a.4b91df0a.2b93.ffff8f28@mx.google.com> From: Volker Armin Hemmann To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: terrible performance with btrfs on LVM2 using a WD 2TB green drive Date: Tue, 15 Mar 2011 16:44:20 +0100 User-Agent: KMail/4.6 beta4 (Linux/2.6.36.4r4; KDE/4.6.1; x86_64; ; ) In-Reply-To: References: <1300167466.30677.32.camel@troll> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Archives-Salt: X-Archives-Hash: cdf4446a54682fffbc1757a0277ddb5f On Tuesday 15 March 2011 15:26:44 James wrote: > Bill Kenworthy iinet.net.au> writes: > > I have recently added a WD 2TB green drive to two systems and am finding > > terrible performance with btrfs on an LVM using these drives. > > Hmmmm, I've been contemplating btrfs on some new installs > with the eventual goal of a CEPH network file system, on top > of ext4 and/or btrfs. Is this issue just with the drivers, or > related to btrfs too? > > How is btrfs , from the "driver's seat"? > > Does this aberration you detail, extend to the Green Seagate 2T drives? > > > I just saw on the mythtv list about the sector size problem these drives > > Can you give a precise link to this list or can I follow it (read only) > via net news? (if so what is the news group name)? > > I'd like to read up on this issue, as I have several gentoo installs > (very soon) that will have RAID1 using (2) ST 2T green drives. > > Alternative RAID configs and performance/reliability results is > also of keen interest to many; so thanks for posting about these > issues. > just google for 4k sectors and or adf drives. There is plenty of material out there. And you don't need parted. You can do the correct alignment with good old fdisk.