From owner-freebsd-questions@FreeBSD.ORG Tue Dec 11 14:01:25 2007 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 3359B16A417 for ; Tue, 11 Dec 2007 14:01:25 +0000 (UTC) (envelope-from jmrueda@diatel.upm.es) Received: from smtp.upm.es (euler.ccupm.upm.es [138.100.4.67]) by mx1.freebsd.org (Postfix) with ESMTP id B171A13C4D1 for ; Tue, 11 Dec 2007 14:01:24 +0000 (UTC) (envelope-from jmrueda@diatel.upm.es) Received: from smtp.euitt.upm.es (mail.euitt.upm.es [138.100.52.110]) by smtp.upm.es (8.13.8/8.13.8/euler-005) with ESMTP id lBBE1Mwc016050 for ; Tue, 11 Dec 2007 15:01:22 +0100 Received: from localhost (localhost [127.0.0.1]) (Authenticated sender: postfix) by smtp.euitt.upm.es (Postfix) with ESMTP id 6D908564EC for ; Tue, 11 Dec 2007 15:01:22 +0100 (CET) Received: from smtp.euitt.upm.es ([138.100.52.110]) by localhost (smtp.euitt.upm.es [127.0.0.1]) (amavisd-new, port 10024) with LMTPA id rCB6jC+WF+Zb for ; Tue, 11 Dec 2007 15:01:19 +0100 (CET) Received: from [138.100.49.70] (unknown [138.100.49.70]) (Authenticated sender: jmrueda) by smtp.euitt.upm.es (Postfix) with ESMTP id 6CD44564F5 for ; Tue, 11 Dec 2007 15:01:19 +0100 (CET) Message-ID: <475E97E9.5060504@diatel.upm.es> Date: Tue, 11 Dec 2007 15:00:09 +0100 From: =?ISO-8859-1?Q?Javier_Mart=EDn_Rueda?= User-Agent: Thunderbird 1.5.0.9 (X11/20070129) MIME-Version: 1.0 CC: freebsd-questions References: <27dbfc8c0712060134u3580b5b0v24a7bc3301c05692@mail.gmail.com> In-Reply-To: <27dbfc8c0712060134u3580b5b0v24a7bc3301c05692@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: fsck of big disk 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, 11 Dec 2007 14:01:25 -0000 Valerio Daelli wrote: > Hi list > > we have a freshly installed FreeBSD 6.2 machine with a gstriped external disk, > of 5.3Tb. The disk is composed of two slices of 2.6 Tb. > We are trying to have a (background) fsck of it but few hours later > since the start of the check > the host get unresponsive: it responds to ping but it doesn't let > login anyone, nor by ssh > nor by console. > What do you get if you press Control-T on the console when it is unresponsive? When you do a background fsck there is a point at which a snapshot of the filesystem is taken, although I'd say that happens at the beginning of the check. The problem is that with 5.3 Tb, it may take quite a while to take the snapshot, and during that time the system blocks any process that tries to write to the filesystem. Maybe that's what you are experiencing.