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 1PzmWj-00044s-TW for garchives@archives.gentoo.org; Wed, 16 Mar 2011 08:56:22 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 345DE1C033; Wed, 16 Mar 2011 08:54:35 +0000 (UTC) Received: from out5.smtp.messagingengine.com (out5.smtp.messagingengine.com [66.111.4.29]) by pigeon.gentoo.org (Postfix) with ESMTP id 1388C1C033 for ; Wed, 16 Mar 2011 08:54:34 +0000 (UTC) Received: from compute2.internal (compute2.nyi.mail.srv.osa [10.202.2.42]) by gateway1.messagingengine.com (Postfix) with ESMTP id C70C52054C for ; Wed, 16 Mar 2011 04:54:34 -0400 (EDT) Received: from frontend2.messagingengine.com ([10.202.2.161]) by compute2.internal (MEProxy); Wed, 16 Mar 2011 04:54:34 -0400 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=messagingengine.com; h=message-id:date:from:mime-version:to:subject:references:in-reply-to:content-type; s=smtpout; bh=2+OaCcMqpFXuK6jEpbNT9h+I7/g=; b=cqP+vhVxadGjgTaJSkP62PEYpvrUMwdhmxN3QPF4tSDCPsWrVGPpYhHAh1EaggOUebesKeJkvDyEGD6PE9oZemT+mR4IeXeiG2Gf8mBLNr3+DFypZE1R8pLl1qYe6jdSrODlej0w1DhnTPa590y4g/mb091eWNr2TVygJmBoYm8= X-Sasl-enc: CUsXE5DFy7XLaabxzC2Mbfwc7gxiFouM8K2dH6HqpCLf 1300265674 Received: from [192.168.5.18] (serv.binarywings.net [83.169.5.6]) by mail.messagingengine.com (Postfix) with ESMTPSA id B45F44423AF for ; Wed, 16 Mar 2011 04:54:33 -0400 (EDT) Message-ID: <4D807A91.2000901@binarywings.net> Date: Wed, 16 Mar 2011 09:53:37 +0100 From: Florian Philipp User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20110219 Lightning/1.0b3pre Thunderbird/3.1.7 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 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] terrible performance with btrfs on LVM2 using a WD 2TB green drive References: <1300167466.30677.32.camel@troll> <201103142350.49670.matt@deploylinux.net> In-Reply-To: <201103142350.49670.matt@deploylinux.net> X-Enigmail-Version: 1.1.2 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig0F1E2824EB7F437361A1FB1A" X-Archives-Salt: X-Archives-Hash: e75433c150ef3621b5062944fe513cf8 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig0F1E2824EB7F437361A1FB1A Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Am 15.03.2011 07:50, schrieb Matthew Marlowe: >=20 >> My problem is that LVM2 is not supported in parted which is the >> recommended tool to deal with this. >> >> I suspect I only need to map the individual PE to a particular start >> sector on each drive, not btrfs, but then there is stripe/block sizes = to >> consider as well ... WD also are recommending 1mb sector boundaries fo= r >> best performance - I can see a reinstall coming up :) >> > =20 > I have on my workstation: > 2 WD 2TB Black Drives > 5 WD 2TB RE4 Drives >=20 > Some notes: > - The black drives have horrible reliability, poor sector remapping, an= d have=20 > certain standard drive features to make them unusable in raid. I would= not=20 > buy them again. I'm not sure how similar the green drives are. Green drives also seem to be affected: http://doug.warner.fm/d/blog/2009/11/Western-Digital-15TB-Green-Drives-No= t-your-Linux-Software-RAID --------------enig0F1E2824EB7F437361A1FB1A Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk2AepEACgkQqs4uOUlOuU80IwCeKLzj+rB0OO4MNjBXjK1aCX++ Te4An0WD5S/QSoFMTZQqAzdz7RB9gcgE =Epg+ -----END PGP SIGNATURE----- --------------enig0F1E2824EB7F437361A1FB1A--