Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261271AbTH2O1i (ORCPT ); Fri, 29 Aug 2003 10:27:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261273AbTH2O1h (ORCPT ); Fri, 29 Aug 2003 10:27:37 -0400 Received: from [24.241.190.29] ([24.241.190.29]:54918 "EHLO wally.rdlg.net") by vger.kernel.org with ESMTP id S261271AbTH2O1a (ORCPT ); Fri, 29 Aug 2003 10:27:30 -0400 Date: Fri, 29 Aug 2003 10:27:22 -0400 From: "Robert L. Harris" To: David T Hollis Cc: Linux-Kernel Subject: Re: ext2 -> ext3 on the fly? Message-ID: <20030829142722.GB12564@rdlg.net> Mail-Followup-To: David T Hollis , Linux-Kernel References: <20030829141619.GA12564@rdlg.net> <3F4F6233.5050809@davehollis.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="uZ3hkaAS1mZxFaxD" Content-Disposition: inline In-Reply-To: <3F4F6233.5050809@davehollis.com> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3489 Lines: 95 --uZ3hkaAS1mZxFaxD Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Thus spake David T Hollis (dhollis@davehollis.com): > Robert L. Harris wrote: >=20 > >I have a number of servers which are currently mounting /usr as ext2. I= =20 > >have a means of doing an tune2fs -j on all of them remotely en mass but > >I'd rather not reboot them all to enable journaling on machines that are > >up and not having issues. I've tried to do a: > > > >mount -t ext3 -o remount /usr > > > >as well as just a mount -o remount after changing the fstab. > > > >on a test box but it just blows out a usage message. Is there a way to > >do this remount without a complete reboot that'll be transparant to > >users? > > > > > >If not, is it dangerous to tune2fs the filesystems, change the fstab and > >then leave the box up for 2-6 months and let them reboot through > >atrrition, upgrades, etc? > > > >Current kernel is 2.4.21-ac3, getting outages and upgrades is a rather > >long process involving regression testing, etc. > > > >Robert > > > >:wq! > >------------------------------------------------------------------------= --- > >Robert L. Harris | GPG Key ID: E344DA3B > > @ x-hkp://pgp.mit.edu > >DISCLAIMER: > > These are MY OPINIONS ALONE. I speak for no-one else. > > > >Life is not a destination, it's a journey. > > Microsoft produces 15 car pileups on the highway. > > Don't stop traffic to stand and gawk at the tragedy. > >=20 > > > I would be inclined to say it's not safe not from a code perspective but= =20 > an administration perspective. If you make a change as significant as=20 > the file system format but don't test it until you reboot the box six=20 > months from now (when you aren't thinking about how you changed it six=20 > months ago) problems are likely to happen. Could be a simple typo or=20 > something else, but it can definitely come back to bite you in the=20 > backside. Granted, if you forgot to change your fstab to ext3, you'd=20 > still boot and be fine running as ext2, you just never can tell what=20 > could happen. Murphy always likes to visit on those occasions. My thoughts exactly, just wanted someone else to say it so I can give it to management. Unfortunately I know their response will be that our package management system will ensure this won't happen which technically it shouldn't but I can think of a couple ways ti still could. :wq! --------------------------------------------------------------------------- Robert L. Harris | GPG Key ID: E344DA3B @ x-hkp://pgp.mit.edu DISCLAIMER: These are MY OPINIONS ALONE. I speak for no-one else. Life is not a destination, it's a journey. Microsoft produces 15 car pileups on the highway. Don't stop traffic to stand and gawk at the tragedy. --uZ3hkaAS1mZxFaxD Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQE/T2LK8+1vMONE2jsRAsJoAJ9KTdn1McNIz8WpHXLCUuydmO5OtgCgpFne VC2k/hGnPyzA21ivkNb1mRE= =WP+k -----END PGP SIGNATURE----- --uZ3hkaAS1mZxFaxD-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/