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List:       linux-ha-dev
Subject:    RE: [Linux-ha-dev] Heartbeat refuses to release all resources
From:       "Soffen, Matthew" <msoffen () iso-ne ! com>
Date:       2002-01-28 16:45:42
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That's part of the problem.  I don't know for sure.  I run both serial and
Ethernet .

Matt

-----Original Message-----
From: Alan Robertson [mailto:alanr@unix.sh]
Sent: Monday, January 28, 2002 10:27 AM
To: linux-ha-dev@lists.community.tummy.com
Subject: Re: [Linux-ha-dev] Heartbeat refuses to release all resources


"Soffen, Matthew" wrote:
> 
> Actually those error messages are STILL in there:
> 
> heartbeat: 2002/01/27_03:48:31 WARN: ha_msg_add_nv: line doesn't contain
'='
> heartbeat: 2002/01/27_03:48:31 info:
> 
> heartbeat: 2002/01/27_03:48:31 ERROR: NV failure (controlfifo2msg):
> heartbeat: 2002/01/27_03:48:31 info:
> 
> Any ideas if this is some funky artifact ?

Actually, those are *different* funky messages.

The message "line doesn't contain '='" means that it received a line in the
middle of a message which wasn't of the form name=value. It actually does
this processing before it checks the signature of the packet.  This is
because the signature is just another name/value pair.

I would expect that most people who see those are using serial communication
for one of their comm paths.  The remaining comments apply to serial
connections.

If your serial port dropped a character or two (namely the one with an '='
in it) then this could happen.  I've seen it happen systematically on
certain serial ports where CTS/RTS flow control wasn't working right.  It
dropped every 5th character (the serial port FIFO was 4 bytes deep)

So, it's usually either broken hardware, badly designed hardware, or
incorrect cabling.

CTS on one side needs to be wired to RTS on the other end, and vice versa. 
You should not hook CTS to RTS locally on either end.

This particular failure looks a little different though...
There is either a zero length line received, or one containing only a CR or
other unprintable characters.  It appears to have lost more than a character
or two.

What type of interface is producing this message?

	-- Alan Robertson
	   alanr@unix.sh

	-- Alan Robertson
	   alanr@unix.sh
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