Re: serial console com1 to com1 == login race condition?

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From
James Housley <jim@thehousleys.net>
Date
9 Aug 2002 09:28:05
Subject
Re: serial console com1 to com1 == login race condition?
Message-ID
3D53ED8D.1020104@Thehousleys.net

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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

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