Experimental Physics and
Industrial Control System

"Mark Rivers" <[email protected]> · Wed, 24 Mar 2004 16:30:36 -0600

Andrew,

>  I'm not quite sure what causes ENOBUFS errors when 
> sending CA beacons; I have seen similar errors on IOCs here that have 
> never run out of DataPool or SysPool buffers, and I don't yet 
> know what they're complaining about (any ideas Jeff?).  They do appear

> to be benign though, if my memory is correct - the loss of a beacon
can cause some 
> unnecessary CA searches to occur, but nothing should break.

Things are not benign for us, though the CA error messages may just be
symptomatic of deeper problems.  We have lost NFS and CA connectivity,
and we have to reboot.  It runs for a while, and then it happens again.
I suspect there is a machine on the network there that is infected with
some virus, and periodically blasting each machine on the network.

Disconnecting the beamline switch from the network has fixed the
problem, but of course that means I can't diagnose it from here at
Argonne.

Mark

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System