Hi Jonathan and thanks for reply!
Jonathan Chen wrote:
I have an issue with serial console connection with two FreeBSD machines (Both with Intel SE7210TP1-E motherboard, other configured as "host" from bios and other has ordinary com ports which are connected with normal tested serial cable).
Host machine is running FreeBSD 5.3 and the "client" one 4.10.
Problem is that when trying to open the serial connection with tip, error occurs as;
/[EMAIL PROTECTED] root # tip com1
tip: /dev/cuaa0: Device busy
link down
Weird, fstat shows nothing on the port;
[EMAIL PROTECTED] root # fstat /dev/cuaa0 USER CMD PID FD MOUNT INUM MODE SZ|DV R/W NAME [EMAIL PROTECTED] root #
And yes, this is problem is on the 4.10 machine which is connecting to the 5.3 one.
Might be this is the problem, here is all gettys running on the 4.10 machine:Try running fstat(1) against /dev/cuaa0 to try to find out what's holding the device. If I understand you correctly, you're doing this on the 4.10 machine.
Main question is that how to get access first to the com1 port generally and second to get ahold of the remote screen on the other end of the serial cable?
root 246 0.0 0.1 956 516 v7 Is+ 16Mar05 0:00.00 /usr/libexec/getty Pc ttyv7
root 245 0.0 0.1 956 516 v6 Is+ 16Mar05 0:00.00 /usr/libexec/getty Pc ttyv6
root 244 0.0 0.1 956 516 v5 Is+ 16Mar05 0:00.00 /usr/libexec/getty Pc ttyv5
root 243 0.0 0.1 956 516 v4 Is+ 16Mar05 0:00.00 /usr/libexec/getty Pc ttyv4
root 242 0.0 0.1 956 516 v3 Is+ 16Mar05 0:00.00 /usr/libexec/getty Pc ttyv3
root 241 0.0 0.1 956 516 v2 Is+ 16Mar05 0:00.00 /usr/libexec/getty Pc ttyv2
root 240 0.0 0.1 956 516 v1 Is+ 16Mar05 0:00.00 /usr/libexec/getty Pc ttyv1
root 239 0.0 0.1 956 516 v0 Is+ 16Mar05 0:00.00 /usr/libexec/getty Pc ttyv0
root 238 0.0 0.1 956 516 d0 Is 16Mar05 0:00.00 /usr/libexec/getty std.9600 console
The last one (console) does not appear on the 5.3 machines processlist, would it be safe to kill that one just like that with kill -9 238 (If that is the process locking the port)?
The connection is ordinary serial cable, do you mean that should specify from BSD side what kind of connection is it?
Make sure that you haven't got a getty running at the same time on both sides, and that you've got a null-modem connection between the two hosts instead of a straight thru'.
Cheers.
Thanks and Cheers,
Jani
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