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

Subject: Re: caget() from C++
From: "Church, Eric D" <eric.church@pnnl.gov>
To: Mark Rivers <rivers@cars.uchicago.edu>, "'Kasemir, Kay'" <kasemirk@ornl.gov>, Ralph Lange <ralph.lange@gmx.de>, EPICS Tech Talk <tech-talk@aps.anl.gov>
Cc: "Mendez, Jennifer M" <Jennifer.Mendez@pnnl.gov>
Date: Tue, 5 Dec 2017 22:05:36 +0000
I attach a file showing my efforts at setting this variable in the xterm session in which I run my caxyz commands and the record of my puzzling problems. Before trying to export these values of EPICS_CA_ADDR_LIST, all was well. Whereas, after setting it, failingx2, if I unset it I can not connect: I am not returning to successful camonitoring of just even one IOC.

Note: all the relevant-looking complaints from my 2nd IOC terminal in the attached file ….

- Eric

 

On 12/5/17, 1:43 PM, "Mark Rivers" <rivers@cars.uchicago.edu> wrote:

    > Looks like the EPICS_CA_ADDR_LIST used by camonitor is not using the broadcast address of your host.
    
    It should be doing that automatically without you needing to set EPICS_CA_ADDR_LIST.  Can you send the output of the following commands Linux command in the shell where you are running camonitor.
    
    ifconfig
    printenv | grep EPICS
    
    At the IOC shell prompt on both the first and second IOCs send the output of
    
    epicsPrtEnvParams
    
    
    What happens if you set EPICS_CA_ADDR_LIST manually to the broadcast address of your system?  For example on my system ifconfig shows:
    
    p5p1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 164.54.160.82  netmask 255.255.255.0  broadcast 164.54.160.255
            inet6 fe80::3efd:feff:fea3:f258  prefixlen 64  scopeid 0x20<link>
            ether 3c:fd:fe:a3:f2:58  txqueuelen 1000  (Ethernet)
            RX packets 80276465019  bytes 92598173910474 (84.2 TiB)
            RX errors 0  dropped 114  overruns 0  frame 0
            TX packets 32261858165  bytes 16671972218313 (15.1 TiB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    So I would set EPICS_CA_ADDR_LIST=164.54.160.255
    
    Mark
    
    
    
    
    > -----Original Message-----
    > From: Kasemir, Kay [mailto:kasemirk@ornl.gov]
    > Sent: Tuesday, December 05, 2017 3:37 PM
    > To: Church, Eric D; Mark Rivers; Ralph Lange; EPICS Tech Talk
    > Cc: Mendez, Jennifer M
    > Subject: Re: caget() from C++
    > 
    > >Indeed camonitor can properly watch a channel on the first IOC when only it is running. I
    > can dial up and down the voltage from CSS on a particular PV on this first IOC and watch
    > it move on camonitor. >When I start the second IOC I can continue this exercise on POVs
    > on the first IOC. If I kill camonitor, per your suggestion, I can not start it again on a PV on
    > the first IOC. And if I kill the second IOC I can >once again start camonitor successfully on
    > a PV on the first IOC.
    > 
    > >What does it mean, do ya think?
    > 
    > Looks like the EPICS_CA_ADDR_LIST used by camonitor is not using the broadcast
    > address of your host.
    
    
    

arxe:~/ara/CSS$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:80:2F:19:FE:07  
          inet addr:130.20.48.81  Bcast:130.20.49.255  Mask:255.255.254.0
          inet6 addr: fe80::280:2fff:fe19:fe07/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:18620331 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7828704 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2781070185 (2.5 GiB)  TX bytes:1383464993 (1.2 GiB)
          Interrupt:20 Memory:dfe00000-dfe20000 

eth1      Link encap:Ethernet  HWaddr 00:80:2F:19:FE:08  
          inet addr:192.168.1.11  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::280:2fff:fe19:fe08/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:332650789 errors:0 dropped:0 overruns:0 frame:0
          TX packets:91082275 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:22888828435 (21.3 GiB)  TX bytes:7836090071 (7.2 GiB)
          Interrupt:19 Memory:dfc60000-dfc80000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:127738385 errors:0 dropped:0 overruns:0 frame:0
          TX packets:127738385 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:12824308258 (11.9 GiB)  TX bytes:12824308258 (11.9 GiB)

virbr0    Link encap:Ethernet  HWaddr 52:54:00:7E:DA:94  
          inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:21796 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:12474520 (11.8 MiB)

arxe:~/ara/CSS$ export EPICS_CA_ADDR_LIST=192.168.1.255
arxe:~/ara/CSS$ camonitor PS1304001:000:vmon
Warning: Duplicate EPICS CA Address list entry "192.168.1.255:5064" discarded
PS1304001:000:vmon             *** Not connected (PV not found)
^C
arxe:~/ara/CSS$ export EPICS_CA_ADDR_LIST=130.20.49.255
arxe:~/ara/CSS$ camonitor PS1304001:000:vmon
Warning: Duplicate EPICS CA Address list entry "130.20.49.255:5064" discarded
PS1304001:000:vmon             *** Not connected (PV not found)
^C
arxe:~/ara/CSS$ printenv | grep EPICS

.30+6.
PYEPICS_LIBCA=/home/arxe/ara/epics/base-3.14.12.5/lib/linux-x86_64/libca.so
EPICS_HOST_ARCH=linux-x86_64
EPICS_CA_ADDR_LIST=130.20.49.255



..............Now, onto the IOC epicsPrtEnvParams request:

---- 1st IOC ----

epics> epicsPrtEnvParams
EPICS_AR_PORT: 7002
EPICS_CAS_AUTO_BEACON_ADDR_LIST is undefined
EPICS_CAS_BEACON_ADDR_LIST is undefined
EPICS_CAS_BEACON_PERIOD is undefined
EPICS_CAS_BEACON_PORT is undefined
EPICS_CAS_IGNORE_ADDR_LIST is undefined
EPICS_CAS_INTF_ADDR_LIST is undefined
EPICS_CAS_SERVER_PORT is undefined
EPICS_CA_ADDR_LIST is undefined
EPICS_CA_AUTO_ADDR_LIST: YES
EPICS_CA_BEACON_PERIOD: 15.0
EPICS_CA_CONN_TMO: 30.0
EPICS_CA_MAX_ARRAY_BYTES: 16384
EPICS_CA_MAX_SEARCH_PERIOD: 300.0
EPICS_CA_NAME_SERVERS is undefined
EPICS_CA_REPEATER_PORT: 5065
EPICS_CA_SERVER_PORT: 5064
EPICS_CMD_PROTO_PORT is undefined
EPICS_IOC_LOG_FILE_COMMAND is undefined
EPICS_IOC_LOG_FILE_LIMIT: 1000000
EPICS_IOC_LOG_FILE_NAME is undefined
EPICS_IOC_LOG_INET is undefined
EPICS_IOC_LOG_PORT: 7004
EPICS_TIMEZONE: CUS::360:031302:110602
EPICS_TS_NTP_INET is undefined
IOCSH_HISTSIZE: 50
IOCSH_PS1: epics> 
epics> 





--- 2nd IOC -----

cas warning: Configured TCP port was unavailable.
cas warning: Using dynamically assigned TCP port 42117,
cas warning: but now two or more servers share the same UDP port.
cas warning: Depending on your IP kernel this server may not be
cas warning: reachable with UDP unicast (a host's IP in EPICS_CA_ADDR_LIST)
iocRun: All initialization complete
## Start any sequence programs
#seq sncxxx,"PSNAME=PS1304001"
epics> epicsPrtEnvParams
EPICS_AR_PORT: 7002
EPICS_CAS_AUTO_BEACON_ADDR_LIST is undefined
EPICS_CAS_BEACON_ADDR_LIST is undefined
EPICS_CAS_BEACON_PERIOD is undefined
EPICS_CAS_BEACON_PORT is undefined
EPICS_CAS_IGNORE_ADDR_LIST is undefined
EPICS_CAS_INTF_ADDR_LIST is undefined
EPICS_CAS_SERVER_PORT is undefined
EPICS_CA_ADDR_LIST is undefined
EPICS_CA_AUTO_ADDR_LIST: YES
EPICS_CA_BEACON_PERIOD: 15.0
EPICS_CA_CONN_TMO: 30.0
EPICS_CA_MAX_ARRAY_BYTES: 16384
EPICS_CA_MAX_SEARCH_PERIOD: 300.0
EPICS_CA_NAME_SERVERS is undefined
EPICS_CA_REPEATER_PORT: 5065
EPICS_CA_SERVER_PORT: 5064
EPICS_CMD_PROTO_PORT is undefined
EPICS_IOC_LOG_FILE_COMMAND is undefined
EPICS_IOC_LOG_FILE_LIMIT: 1000000
EPICS_IOC_LOG_FILE_NAME is undefined
EPICS_IOC_LOG_INET is undefined
EPICS_IOC_LOG_PORT: 7004
EPICS_TIMEZONE: CUS::360:031302:110602
EPICS_TS_NTP_INET is undefined
IOCSH_HISTSIZE: 50
IOCSH_PS1: epics> 
epics> 





Replies:
RE: caget() from C++ Mark Rivers
References:
caget() from C++ Church, Eric D
Re: caget() from C++ Andrew Johnson
Re: caget() from C++ Church, Eric D
Re: caget() from C++ Mark Rivers
Re: caget() from C++ Church, Eric D
RE: caget() from C++ Mark Rivers
Re: caget() from C++ Church, Eric D
RE: caget() from C++ Mark Rivers
Re: caget() from C++ Church, Eric D
Re: caget() from C++ Mark Rivers
Re: caget() from C++ Ralph Lange
Re: caget() from C++ Mark Rivers
Re: caget() from C++ Church, Eric D
Re: caget() from C++ Kasemir, Kay
RE: caget() from C++ Mark Rivers

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