From owner-freebsd-questions@FreeBSD.ORG Tue Dec 8 06:58:38 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E177E106566B for ; Tue, 8 Dec 2009 06:58:38 +0000 (UTC) (envelope-from cronfy@sprinthost.ru) Received: from odin.from.sh (odin.from.sh [80.93.50.112]) by mx1.freebsd.org (Postfix) with ESMTP id A14878FC12 for ; Tue, 8 Dec 2009 06:58:37 +0000 (UTC) Received: from odin.from.sh ([80.93.50.112]) by odin.from.sh with esmtps (TLSv1:AES256-SHA:256) (Exim 4.69 (FreeBSD)) (envelope-from ) id 1NHu1C-000FiW-8V for freebsd-questions@freebsd.org; Tue, 08 Dec 2009 09:57:54 +0300 Received: from [194.8.176.106] (helo=[192.168.0.3]) by odin.from.sh with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.69 (FreeBSD)) (envelope-from ) id 1NHu15-000Fi1-Mq for freebsd-questions@freebsd.org; Tue, 08 Dec 2009 09:57:47 +0300 Message-ID: <4B1DF953.4050504@sprinthost.ru> Date: Tue, 08 Dec 2009 09:59:31 +0300 From: cronfy User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: FreeBSD is too filesystem errors sensitive X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Dec 2009 06:58:39 -0000 Hello. Please forgive me for probably a very stupid question. But why is FreeBSD so sensitive to filesystem errors that it ends up with panics like 'freeing free block' or 'ffs_valloc: dup alloc'? I just can't get it. Failed to allocate vnode? Go allocate another one! Freeing free block? Leave it free then! I understand these situations should never happen, but the hell why is it required to panic and kill everything that would be working happily even if something very disasterous happen to /backup partition, in example? Would be very appreciated if someone could explain that... thanks.