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 1Q2RY2-0003GY-LM for garchives@archives.gentoo.org; Wed, 23 Mar 2011 17:08:42 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 4E5B31C047; Wed, 23 Mar 2011 17:06:28 +0000 (UTC) Received: from out3.smtp.messagingengine.com (out3.smtp.messagingengine.com [66.111.4.27]) by pigeon.gentoo.org (Postfix) with ESMTP id 2663E1C047 for ; Wed, 23 Mar 2011 17:06:28 +0000 (UTC) Received: from compute3.internal (compute3.nyi.mail.srv.osa [10.202.2.43]) by gateway1.messagingengine.com (Postfix) with ESMTP id E153920238 for ; Wed, 23 Mar 2011 13:06:27 -0400 (EDT) Received: from frontend1.messagingengine.com ([10.202.2.160]) by compute3.internal (MEProxy); Wed, 23 Mar 2011 13:06:27 -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=x31MGBH5sg6kUPUrpEeVC5kkOcg=; b=TIWu/CocD/1X11qD/0cOuYB2MZVGk+4K0syWGvEc4DTwmdhzxD82eaCtjNurLabh2Dnw+cn7URBmbbwQe6iqaNsvXt6UOJrhiCAwei4/Z36osRw13VBjCQ+gkiVgHZq1mPs0hw/WsX7yFjcBmda0+gexwXmRqpI81esntoxmvIk= X-Sasl-enc: cIhJZ0XGJo5joDTI10WVpnCkr+G2L1IjbcQ4UX5oKpZX 1300899987 Received: from [192.168.5.18] (serv.binarywings.net [83.169.5.6]) by mail.messagingengine.com (Postfix) with ESMTPSA id C4092401C71 for ; Wed, 23 Mar 2011 13:06:26 -0400 (EDT) Message-ID: <4D8A283B.8080805@binarywings.net> Date: Wed, 23 Mar 2011 18:04:59 +0100 From: Florian Philipp User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.15) Gecko/20110313 Lightning/1.0b3pre Thunderbird/3.1.9 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] the best filesystem for server: XFS or JFS (or?) References: <4D87A7C6.1060502@gmail.com> <4D89A0F9.8080007@gmail.com> <201103230850.15123.stephane@22decembre.eu> <4d89b8ba.9505df0a.1617.6e4b@mx.google.com> In-Reply-To: X-Enigmail-Version: 1.1.2 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig6162BB84DA2F87CFEEB2A387" X-Archives-Salt: X-Archives-Hash: c841ff75cad9e5c1ad0b9f9bbbe2ab39 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig6162BB84DA2F87CFEEB2A387 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Am 23.03.2011 14:04, schrieb Mr. Jarry: > On Wed, Mar 23, 2011 at 10:09 AM, Volker Armin Hemmann > wrote: >=20 >> And if you don't care about barriers, jfs might be a good choice. >=20 > Knowing nothing about "barriers" I tried to find some info and > came accross this article: >=20 > http://searchenterpriselinux.techtarget.com/tip/Deciding-when-to-use-Li= nux-file-system-barriers >=20 > It says, barriers can not work with device mapper (raid, lvm). > If it is true (?) then because of having all partitions in raid1 (md), > I need not worry about barriers. Whatever filesystem I picked out, > I could not use barriers... >=20 > Jarry >=20 Kernel changes claim barrier support for DM and MD beginning at 2.6.33 [1= ]. Some support was also added in 2.6.31, 2.6.30 and 2.6.29. This thread [2] leaves me with the impression that the same patches providing support in DM and MD also solved the issue for LVM. The article you cite might be correct in the context of RHEL-5.5 and SLED-10 which use a much older kernel (2.6.24 if I'm not mistaken). [1] http://kernelnewbies.org/Linux_2_6_33 [2] http://lwn.net/Articles/326597/ Also interesting: http://lwn.net/Articles/400541/ Hope this helps, Florian Philipp --------------enig6162BB84DA2F87CFEEB2A387 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/ iEYEARECAAYFAk2KKD8ACgkQqs4uOUlOuU/8vQCfRTiE64T1uTLtKBL5juzedHKE 4awAnRAXQwr7KwnGid7M1WfMcRaizlMy =mtrM -----END PGP SIGNATURE----- --------------enig6162BB84DA2F87CFEEB2A387--