From owner-freebsd-questions@FreeBSD.ORG Wed Jul 1 09:29:28 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 AEE741065672 for ; Wed, 1 Jul 2009 09:29:28 +0000 (UTC) (envelope-from nvass9573@gmx.com) Received: from mail.gmx.com (unknown [213.165.64.42]) by mx1.freebsd.org (Postfix) with SMTP id 03C978FC15 for ; Wed, 1 Jul 2009 09:29:27 +0000 (UTC) (envelope-from nvass9573@gmx.com) Received: (qmail invoked by alias); 01 Jul 2009 09:29:25 -0000 Received: from ipa246.0.107.79.tellas.gr (EHLO [169.254.0.1]) [79.107.0.246] by mail.gmx.com (mp-eu003) with SMTP; 01 Jul 2009 11:29:25 +0200 X-Authenticated: #46156728 X-Provags-ID: V01U2FsdGVkX1/x57UQmILxl7IqBTVJDdR+AWb5TaEcI7Er1WeEbc jswfEldfxcbDho Message-ID: <4A4B2C64.4040508@gmx.com> Date: Wed, 01 Jul 2009 12:29:08 +0300 From: Nikos Vassiliadis User-Agent: Thunderbird 2.0.0.22 (Windows/20090605) MIME-Version: 1.0 To: Manolis Kiagias References: <4A4B0E8E.4090501@otenet.gr> In-Reply-To: <4A4B0E8E.4090501@otenet.gr> Content-Type: text/plain; charset=ISO-8859-7; format=flowed Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 X-FuHaFi: 0.62 Cc: freebsd-questions@freebsd.org Subject: Re: Failing to show 'Password:' prompt 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: Wed, 01 Jul 2009 09:29:28 -0000 Manolis Kiagias wrote: > This morning my server was unresponsive both from ssh and through http. > The only thing that is different on this system on a 1st of month, is a > dump job that runs through periodic (on a mostly inactive system). > > Visiting the console, I discovered the system was still up and > displaying login prompt on all vtys, but after typing a username, the > password prompt would never appear. Keyboard was responsive and I could > even switch between keyboard layouts (English/Greek). Plugging and and > unplugging an external USB drive, showed the kernel messages on tty0. > Still, I could not get it to display a password prompt and had to hard > reboot it. > > I can't find anything in /var/log/messages either - it stops at 5.25 in > the morning. And the dump was not performed either (and there are no > traces about it in the log). > > What kind of crash could cause the password prompt to not display? Ideas? Geia Manoli, A deadlock somewhere in the filesystem code would expose such behavior. Other subsystems may continue to work, but some operations, somehow related to that filesystem code, will wait - forever - for some locks to be released. I've seen such behavior in early RELENG_6 branch with regard to UFS snapshots. Nikos