IDS Forum

Server Install Weirdness:

Posted By: Ben Duncan
Date: Wednesday, 10 July 2013, at 2:37 p.m.

Ok, I will post this here since no at the State Of Mississippi ITS knows our ace
id. Hopefully a Informix Engineer will pick up on it:

Environment:
zLinux Suse 11.2 on ZVM 5.4.
Informix 11.7
8GB Ram allocated to zLinux , 1.5 TB Disk - 500GB DASD with 1TB Multipath
to 8300 SAN.

Synopsis: Install using IP address 10.242.254.100 fails.
Always receives a 'shared memory not initialized for INFORMIXSERVER'
randomly during install.

Reproducible: YES
Consistent: YES

Details:
Installing on zLinux Suse 11.2 using scripts that have been working for
a year now, will receive a 'shared memory not initialized for INFORMIXSERVER'
randomly during setup. buildmsi process and it's associated dbaccess task
will hang and the sysmater, sysusers and other sys type files never complete
building.

Changing IP address to 10.242.254.101 or 10.242.254.99 will allow all
task to complete successfully. Removing the and wiping the server at
ip address 10.242.254.100 and CLONING one that has gone thru the build phase
successfully (IP address 10.242.254.103) and changing the IP address to
10.242.254.100 and restarting the server results in 5 minute connection times
and dbaccess returning 'shared memory not initialized for INFORMIXSERVER'.
Changing IP address to 10.242.254.99 and all processes and connections works
as they should. Failure is most noticeable using onspaces during attempts to
setup dbspaces, new tempfs and llogdbs and plogdbs. Environment variables
required for INFORMIX are there and are complete for users informix and root.

Change IP address to 10.242.254.200 and server responds and acts as it should.
NO OTHER SERVER or system is on the network at 10.242.254.100, all arp caches
have been cleared prior to the testing.

Final result:
10.242.254.100 results in repeated and consistent failure and
issues of running Informix. Moving Server to different IP and the the server
works, clone a working server and use IP 10.242.254.100 and it fails.
Seems to be related somehow of the .100 of the IP address, as we
have up and running around 30 servers that are in the 10.242.254.80 and
less IP range, all built using the same scripts.

Needless to say, this is a stumper. Looks like a bug inside Informix
on the semaphore stuff.

Ben Duncan - Business Network Solutions, Inc. 336 Elton Road Jackson MS, 39212
"Never attribute to malice, that which can be adequately explained by stupidity"

- Hanlon's Razor

Messages In This Thread

• Server Install Weirdness:
  Ben Duncan -- Wednesday, 10 July 2013, at 2:37 p.m.
  • Re: Server Install Weirdness:
    Cesar Inacio Martins -- Wednesday, 10 July 2013, at 3:12 p.m.
  • Re: Server Install Weirdness:
    Art Kagel -- Wednesday, 10 July 2013, at 3:42 p.m.
  • Re: Server Install Weirdness:
    John Miller iii -- Wednesday, 10 July 2013, at 3:51 p.m.
    • RE: Server Install Weirdness:
      Justin Killen -- Wednesday, 10 July 2013, at 4:37 p.m.
      • Re: Server Install Weirdness:
        Ben Duncan -- Wednesday, 10 July 2013, at 4:53 p.m.
        • RE: Server Install Weirdness:
          Justin Killen -- Wednesday, 10 July 2013, at 5:02 p.m.
          • Re: Server Install Weirdness:
            Ben Duncan -- Wednesday, 10 July 2013, at 5:42 p.m.
            • Re: Server Install Weirdness:
              Ben Duncan -- Thursday, 11 July 2013, at 4:41 p.m.
              • RE: Server Install Weirdness:
                Justin Killen -- Thursday, 11 July 2013, at 5:06 p.m.
                • Re: Server Install Weirdness:
                  Ben Duncan -- Friday, 12 July 2013, at 1:23 p.m.
              • Re: Server Install Weirdness:
                Cesar Inacio Martins -- Friday, 12 July 2013, at 10:55 a.m.
                • Re: Server Install Weirdness:
                  Ben Duncan -- Friday, 12 July 2013, at 1:33 p.m.
  • Re: Server Install Weirdness:
    FRANK DEVELOPER -- Monday, 15 July 2013, at 11:09 p.m.

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