Re: Weird behaviour of R3.14.12.2 soft IOC

[Eric Norum <eric@norum.ca>]

I rebuilt the soft IOC and the problem seems to have gone away.  I thought that I had already tried a rebuild, but I guess that I was mistaken.

A mangled shared library, perhaps?

Anyhow, please ignore all this until I gather more data.

On Jul 18, 2012, at 4:33 PM, Eric Norum wrote:

Something strange has just occurred on one of our new linux soft IOC platforms.

The IOC application is running (on machine "b04lxioc02") and has a PV:

epics> dbpr CAENA36XX:1:BulkVoltage

ASG:                DESC: Bulk supply voltage               DISA: 0             

DISP: 0             DISV: 1             NAME: CAENA36XX:1:BulkVoltage           

RVAL: 0             SEVR: NO_ALARM      STAT: NO_ALARM      SVAL: 0             

TPRO: 0             VAL: 27.5     

      

But a client on the same machine (or on another machine on then net for that matter) fails to see this:

enorum@b04lxioc02> caget CAENA36XX:1:BulkVoltage

Read operation timed out: some PV data was not read.

CAENA36XX:1:BulkVoltage        0

CA.Client.Exception...............................................

    Warning: "Virtual circuit disconnect"

    Context: "op=0, channel=CAENA36XX:1:BulkVoltage, type=DBR_TIME_DOUBLE, count=1, ctx="b04lxioc02.als.lbl.gov:42204""

    Source File: ../getCopy.cpp line 92

    Current Time: Wed Jul 18 2012 16:24:10.044127476

..................................................................

And forcing a direct connection attempt doesn't help:

enorum@b04lxioc02> EPICS_CA_ADDR_LIST=localhost EPICS_CA_AUTO_ADDR_LIST=NO  caget CAENA36XX:1:BulkVoltage

Read operation timed out: some PV data was not read.

CAENA36XX:1:BulkVoltage        0

CA.Client.Exception...............................................

    Warning: "Virtual circuit disconnect"

    Context: "op=0, channel=CAENA36XX:1:BulkVoltage, type=DBR_TIME_DOUBLE, count=1, ctx="localhost:42204""

    Source File: ../getCopy.cpp line 92

    Current Time: Wed Jul 18 2012 16:25:09.027521134

..................................................................

Host info:

enorum@b04lxioc02 > uname -a

Linux b04lxioc02.als 2.6.32-220.17.1.el6.x86_64 #1 SMP Tue May 15 17:16:46 CDT 2012 x86_64 x86_64 x86_64 GNU/Linux

EPICS info -- IOC startup: 

iocInit

Starting iocInit

############################################################################

## EPICS R3.14.12.2 $Date: Mon 2011-12-12 14:09:32 -0600$

## EPICS Base built May 24 2012

Troubleshooting suggestions welcomed.

-- 
Eric Norum
wenorum@lbl.gov

-- 
Eric Norum
eric@norum.ca