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<== Date ==> <== Thread ==>

Subject: Re: strange ioc hangup
From: rolf keitel <rolf@triumf.ca>
To: Benjamin Franksen <benjamin.franksen@bessy.de>
Cc: tech-talk <tech-talk@aps.anl.gov>
Date: Wed, 23 Jun 2010 19:08:59 +0200
At TRUMF we had nothing but problems with VxWorks 5.4. Upgrading to 5.5 resolved the issues.
- rolf -


On 6/23/2010 3:19 PM, Benjamin Franksen wrote:
> From the console log:

CAS: request from 192.168.21.6:46187 =>  "CAS: Missaligned protocol rejected"
[Sun Jun 20 05:23:20 2010]CAS: Request from 192.168.21.6:46187 =>  cmmd=49320
cid=0x91f87157 type=48940 count=5064 postsize=5587
[Sun Jun 20 05:23:20 2010]CAS: Request from 192.168.21.6:46187 =>
available=0xcb45c46e 	N=1 paddr=0x0
[Sun Jun 20 05:23:20 2010]CAS: invalid (damaged?) UDP request from
192.168.21.6:46187 ?
[Sun Jun 20 05:23:30 2010]interrupt:
[Sun Jun 20 05:23:30 2010]ei0: reset

This is base 3.14.8.2 and VxWorks 5.4.2. Looks like one or more corrupt UDP
packages arrived at the IOC. The problem is that after the last message
("ei0: reset") the IOC is dead to the network (neither transmits nor
receives anything). No way to recover, other than rebooting.

The question is: what does the CA server do after it outputs these error
messages? Could it be it does something to the socket that makes vxWorks
throw up hands and strike? Also, note the 10 second delay between the CAS
message and the vxWorks message.

Is this a known bug in VxWorks? In the CAS?

Cheers
Ben

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References:
strange ioc hangup Benjamin Franksen

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