From: Bruce Guenter Subject: Re: [PATCH v2] ext4: Deprecate data=journal mount option Date: Tue, 28 Jun 2011 22:49:55 -0600 Message-ID: <20110629044955.GA30312@untroubled.org> References: <1309260363-19012-1-git-send-email-lczerner@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="qDbXVdCdHGoSgWSk" To: linux-ext4@vger.kernel.org Return-path: Received: from zak.futurequest.net ([69.5.6.152]:50686 "HELO zak.futurequest.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751122Ab1F2E4h (ORCPT ); Wed, 29 Jun 2011 00:56:37 -0400 Content-Disposition: inline In-Reply-To: <1309260363-19012-1-git-send-email-lczerner@redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: --qDbXVdCdHGoSgWSk Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jun 28, 2011 at 01:26:03PM +0200, Lukas Czerner wrote: > Data journalling mode (data=3Djournal) is known to be neglected by > developers and only minority of people is actually using it. This > mode is also less tested than the other two modes by the developers. >=20 > This creates a dangerous combination, because the option which seems > *safer* is actually less safe the others. So this commit adds a warning > message in case that data=3Djournal mode is used, so the user is informed > that the mode might be removed in the future. When I last benchmarked it, data=3Djournal mode was considerably faster than the other modes for sync heavy work loads, such as mail servers. Have there been improvements to other (safe) modes that reverse this? --=20 Bruce Guenter http://untroubled.org/ --qDbXVdCdHGoSgWSk Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) iEYEARECAAYFAk4KrvMACgkQ6W+y3GmZgOgjVQCgp7UNRGSDpzAj/IHeDE+Muv2y COoAoIZpcZ0+/jQh6XWr8VT1XQVsSrGx =roUt -----END PGP SIGNATURE----- --qDbXVdCdHGoSgWSk--