From owner-freebsd-stable@FreeBSD.ORG Fri Mar 27 01:11:53 2009 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D9AD1106564A for ; Fri, 27 Mar 2009 01:11:53 +0000 (UTC) (envelope-from freebsd-nospam@yaxom.com) Received: from gw.yaxom.com (gw.yaxom.com [59.167.217.197]) by mx1.freebsd.org (Postfix) with SMTP id 24A7E8FC16 for ; Fri, 27 Mar 2009 01:11:52 +0000 (UTC) (envelope-from freebsd-nospam@yaxom.com) Received: (qmail 75232 invoked from network); 27 Mar 2009 11:11:51 +1000 Received: from joker.yaxom.com (172.16.1.10) by iliad.yaxom.com with SMTP; 27 Mar 2009 11:11:51 +1000 Received: (qmail 2891 invoked by uid 1001); 27 Mar 2009 11:11:51 +1000 Message-ID: Date: Fri, 27 Mar 2009 11:11:50 +1000 From: Greg Black To: "Mikhail T." References: <49C83673.3000604@aldan.algebra.com> <200903251232.11418.doconnor@gsoft.com.au> <49C99204.2050601@aldan.algebra.com> <200903251334.38350.doconnor@gsoft.com.au> <49C99FD2.50609@aldan.algebra.com> <49CA5602.9050001@aldan.algebra.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <49CA5602.9050001@aldan.algebra.com> User-Agent: Mutt/1.4.2.2i; gjb-muttsend.sh 1.7 2004-10-05 X-Uptime: 126 days X-Operating-System: FreeBSD 6.2-RELEASE-p5 i386 X-Location: Brisbane, Australia; 27.49835S 152.98380E X-URL: http://www.gbch.net/gjb.html X-Blog: http://www.gbch.net/gjb/blog/ X-Image-URL: http://www.gbch.net/gjb/gjb-auug048.gif X-PGP-Key-Fingerprint: EBB2 2A92 A79D 1533 AC00 3C46 5D83 B6FB 4B04 B7D6 X-Request-PGP: http://www.gbch.net/keys/4B04B7D6.asc Cc: freebsd-stable@freebsd.org, Andrew Snow , fs@freebsd.org Subject: Re: dump | restore fails: unknown tape header type 1853384566 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Mar 2009 01:11:54 -0000 On 2009-03-25, Mikhail T. wrote: > Greg Black ???????(??): >> On 2009-03-24, Mikhail T. wrote: >> >>> That's true. I just wanted to point out, that someone running dump only >>> (to make backups) is not going to know, whether his dumps are usable >>> (for whichever of the two reasons), until he needs them... >> >> Such a person is not making backups and deserves what he gets. >> > But he *is* making backups -- kindly re-read my paragraph above... He > just is not routinely using them and thus does not know, that they > aren't usable... It is not unreasonable to expect the two utilities to > "just work", so I wouldn't be blaming such a person for not testing > restore. Sorry, this person is *not* making backups in any meaningful fashion. Unless you verify regularly (preferably every time you make a backup) that you can restore both parts of the backup and the entire thing, you are not making backups. You may be lucky, but you probably won't be lucky when it really matters. This is a long-standing issue with backups. But people who don't understand the tools they are using tend to make these mistakes. The result is bad. The solution is to employ competent people who both understand the issues and have the authority to carry out their task.