From owner-freebsd-hackers Fri Aug 9 9:28: 5 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 788E737B400 for ; Fri, 9 Aug 2002 09:28:03 -0700 (PDT) Received: from thehousleys.net (frenchknot.ne.client2.attbi.com [66.31.234.148]) by mx1.FreeBSD.org (Postfix) with ESMTP id B690743E6E for ; Fri, 9 Aug 2002 09:28:01 -0700 (PDT) (envelope-from jim@thehousleys.net) Received: (from root@localhost) by thehousleys.net (8.11.6/8.11.6) id g79GS0U48490; Fri, 9 Aug 2002 12:28:00 -0400 (EDT) (envelope-from jim@Thehousleys.net) Received: from Thehousleys.net (baby.int.thehousleys.net [192.168.0.125]) (authenticated) by thehousleys.net (8.11.6/8.11.6) with ESMTP id g79GRwH48481; Fri, 9 Aug 2002 12:27:58 -0400 (EDT) (envelope-from jim@Thehousleys.net) Message-ID: <3D53ED8D.1020104@Thehousleys.net> Date: Fri, 09 Aug 2002 12:27:57 -0400 From: James Housley User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.0.0) Gecko/20020616 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Dan Langille Cc: hackers@freebsd.org Subject: Re: serial console com1 to com1 == login race condition? References: <3D53B3E5.5384.276CA6F0@localhost> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: by AMaViS perl-10 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Dan Langille wrote: > I have two remote boxes. My colocation hosts have strung a crossover > serial cable from com1 to com1 on these boxes. The idea is that if I > paint myself into a corner on one box, I can get access to it from > the other box via the serial cable. > > But... > > I will need to set up serial consoles on each box in advance of a > problem arising. But won't I get a race condition with each box > thinking the other is trying to login? > > [1] - my apologies to those with whom I have already discussed this > issue. One option is com1 to com2 . It takes 2 cable, but if ttyd1 (com2) doesn't have getty running then the race won't exist. Jim -- /"\ ASCII Ribbon Campaign . \ / - NO HTML/RTF in e-mail . X - NO Word docs in e-mail . / \ ----------------------------------------------------------------- jeh@FreeBSD.org http://www.FreeBSD.org The Power to Serve jim@TheHousleys.Net http://www.TheHousleys.net jhousley@SimTel.Net http://www.SimTel.Net --------------------------------------------------------------------- A Microsoft Certified Systems Engineer is to computing what a McDonalds Certified Food Specialist is to fine cuisine. -- Jack O'Neill To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message