[Linux-HA] RPS10 Stonith Problem

Jamie Watt jamie.watt at murchison.com.au
Mon Feb 13 15:11:05 MST 2006

Hi All,

I just thought I'd let everyone know the solution to the problem I've 
been having because I hate seeing an incomplete thread on a mailing list 
(just in case anyone else has the same problem and finds this Googling).

After contacting WTI for support I found that my null modem cable was 
not wired for handshaking, pins 7 and 8 need to cross (RTS and CTS).

Here is what the pin out should look like:

6&1  -    4
2      -    3
3      -    2
4      -    6&1
5      -    5
7      -    8
8      -    7

So for future reference... make sure you have the correct cable with an 
RPS-10! ;-)

Jamie Watt wrote:
> OK I've managed to get the "RPS-10 Ready" response using minicom, 
> however the only way I have been able to do this is by disconnecting 
> the power to the RPS10 and then re-connecting it.  When the power is 
> re-connected the "RPS-10 Ready" response displays in minicom.
> I have tried to hangup and initialise the connection with minicom (as 
> I have seen suggested) however no response appears to be sent from the 
> RPS10.  I have tested with two different RPS10 units and had the same 
> problem. 
> After toggling the power on the RPS10 I receive:
> Plug 0 Off
> Plug 0 On
> Complete
> I admit that there could be problems with my serial connection.  I 
> could only find one serial cable in my office and I have no idea how 
> old it is or if there are any problems with it.  I have new serial 
> cables arriving tomorrow.
> Could it be possible that the serial cable itself is preventing 
> stonith from receiving the response from the RPS10?
> Jamie
> Yan Fitterer wrote:
>>> I realise that stonith is waiting for the "RPS-10 Ready" response from 
>>> the RPS10, however when using the RPS10 with minicom I have not received 
>>> this response either (that I'm aware of) and yet I have been able to 
>>> toggle the power off and on without any problems.
>> I would suggest that you focus on finding why you don't get the "RPS-10 Ready" message with minicom. Maybe something's
>> wrong in the serial line handling. The Stonith module will not operate until it can catch the string.
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