PK77917: THE EXECUTOR DOES NOT STOP BY "KILL -9" TO IBMLB2 ON ULB 7.0 (IPV4 AND IPV6) FOR AIX

APAR status

• Closed as program error.

Error description

• Edge Components Load Balancer V7.0 for IPv4 and IPv6 for AIX
  launches ibmlb2 process when the executor is started.
  
  The executor does not stop by "kill -9". The customer needs a
  functionality to recover the process down.
  

Local fix

• Restart the OS.
  

Problem summary

• With Load Balancer for ipv6 and ipv4 version 7.0 on AIX, if the
  ibmlb2 process is manually killed, the machine must be rebooted
  to recover.
  

Problem conclusion

• A utility called lb_kext is provided in the
  /opt/ibm/edge/ulb/servers/bin directory.
  
  When the utility is invoked, it will show if the ibmlb2 kernel
  extension is loaded or not. The kernel extension should be
  loaded and unloaded thru the LB "executor start" and "executor
  stop" command.  If the executor gets into a bad state from a
  partial unload or using the kill command, the lb_kext -u will
  unload and allow LB to recover without requiring the machine to
  be rebooted.
  
  For debug purposes, the lb_kext -l will provide kernel tracing.
  Log messages are writen to stdout and can be redirected to a
  file to collect for analysis.
  
  lb_kext -h provides help for the utility.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WEBS LOAD BALAN

• Fixed component ID

  5724H8811

Applicable component levels

• R700 PSY

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