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Date:      Wed, 28 Jun 2006 19:34:43 -0300 (ADT)
From:      User Freebsd <freebsd@hub.org>
To:        Robert Watson <rwatson@FreeBSD.org>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: How to enter DDB through a terminal server / remote console ... ?
Message-ID:  <20060628193421.B43909@ganymede.hub.org>
In-Reply-To: <20060628232727.N78211@fledge.watson.org>
References:  <20060628175839.F43909@ganymede.hub.org> <20060628232727.N78211@fledge.watson.org>

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On Wed, 28 Jun 2006, Robert Watson wrote:

>
> On Wed, 28 Jun 2006, User Freebsd wrote:
>
>> 'k, now that I'm up to 3 6-STABLE servers that are deadlocking, I'm 
>> spending time with the remote tech today to get a serial console put online 
>> ... how do I drop into DDB remotely, where the serial console is going 
>> through a Portmaster Terminal server?  issuing CTL-ALT-ESC, I doubt, will 
>> work, will it?
>
> If configured to use a serial console (console="comconsole" in loader.conf), 
> you can enter the debugger with BREAK_TO_DEBUGGER in the kernel config by 
> sending a serial break.  With my portmasters, I telnet to a TCP port to 
> connect to the serial console, so I send a telnet break, using ^]send break.

Have you ever had a problem with this warning: "(useful for remote 
diagnostics, but also dangerous if you generate a spurious BREAK on the 
serial port!)" in the handbook?

----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email . scrappy@hub.org                              MSN . scrappy@hub.org
Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664



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