From owner-freebsd-current@FreeBSD.ORG Tue Apr 20 05:14:33 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B63A516A4CE for ; Tue, 20 Apr 2004 05:14:33 -0700 (PDT) Received: from avgw.bjut.edu.cn (avgw.bjut.edu.cn [202.112.78.85]) by mx1.FreeBSD.org (Postfix) with SMTP id F0FF543D3F for ; Tue, 20 Apr 2004 05:14:32 -0700 (PDT) (envelope-from delphij@frontfree.net) Received: from beastie.frontfree.net ([218.107.145.7]) by avgw.bjut.edu.cn (SAVSMTP 3.1.5.43) with SMTP id M2004042020142629871 for ; Tue, 20 Apr 2004 20:14:26 +0800 Received: from localhost (localhost [127.0.0.1]) by beastie.frontfree.net (Postfix) with ESMTP id DA7EE115F5 for ; Tue, 20 Apr 2004 20:14:24 +0800 (CST) Received: from beastie.frontfree.net ([127.0.0.1]) by localhost (beastie.frontfree.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 01453-07 for ; Tue, 20 Apr 2004 20:14:24 +0800 (CST) Received: by beastie.frontfree.net (Postfix, from userid 1001) id EB7CB115C5; Tue, 20 Apr 2004 20:14:23 +0800 (CST) Date: Tue, 20 Apr 2004 20:14:23 +0800 From: Xin LI To: current@FreeBSD.org Message-ID: <20040420121423.GA1154@frontfree.net> References: <4084F85B.5070909@delit.net> <20040420102632.GA36668@e-Gitt.NET> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="ibTvN161/egqYuK8" Content-Disposition: inline In-Reply-To: <20040420102632.GA36668@e-Gitt.NET> User-Agent: Mutt/1.4.2.1i X-GPG-key-ID/Fingerprint: 0xCAEEB8C0 / 43B8 B703 B8DD 0231 B333 DC28 39FB 93A0 CAEE B8C0 X-GPG-Public-Key: http://www.delphij.net/delphij.asc X-Operating-System: FreeBSD beastie.frontfree.net 5.2-CURRENT FreeBSD 5.2-CURRENT #22: Wed Apr 14 17:57:37 CST 2004 delphij@beastie.frontfree.net:/usr/obj/usr/src/sys/BEASTIE i386 X-URL: http://www.delphij.net X-By: delphij@beastie.frontfree.net X-Location: Beijing, China X-Virus-Scanned: by amavisd-new at frontfree.net Subject: Re: A way to recover deleted files (just contents) from USF2 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Apr 2004 12:14:33 -0000 --ibTvN161/egqYuK8 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Apr 20, 2004 at 12:26:32PM +0200, Oliver Brandmueller wrote: > This is a FAQ. Und the frequent answer is: >=20 > You can easily recover valuable data after accsional deletion from your= =20 > backup. If you don't have a backup, then your data don't seem to be woth= =20 > having them backed up. Some Unix coursebooks even comment the result of accidentialy removal of a file without backing up as "User should take this as a lesson". Seriously speaking, backups are essential for everybody who is working on important data, not only before you are going to run "rm" on your system, but also any daily work because your work is much more valuable than disks, CD-Rs which are becoming cheaper and cheaper nowadays. On FreeBSD 5.x, besides backups you can also use a new feature of the UFS/UFS2 filesystems called "snapshots", if you have SoftUpdates enabled on it and your power supply is dependable (for performance considerations, snapshots' consistency is not guaranteed across crashes/power failures if you don't explicitly tweak the snapshot code). Snapshots brings some supplemental features which can be utilized to aid backups (make hot-copys of a frozen file system state without having to stop your applications), and we can even retrieve certain files' states at the point a snapshot of the file system has been taken (even the file itself is subsequently removed) --=20 Xin LI http://www.delphij.net/ See complete headers for GPG key and other information. --ibTvN161/egqYuK8 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAhRQfOfuToMruuMARAiqWAJ4uby+CSuUp/KW1z8F8DHteBwgAZQCfXYGc 5TDPHto8XT/4fG3b858nX6w= =k6L1 -----END PGP SIGNATURE----- --ibTvN161/egqYuK8--