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Script to leak file handles

 
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Old 03-01-2012
Script to leak file handles
This is a strange one.

We have an issue where our system is leaking SCTP file handles. There are people working on this and in the mean time we have a monitoring script that alarms when we need to perform actions to manually clear them. For testing purposes I want to write a script that purposfully leaks file handles and fast (leaks about 4000 in a few minutes). The problem is I have absolutely no idea how to do this or where to start and (surprisingly) it is not something people commonly want to do so the internet has not been helpful.

Does anyone know if it is possible to write a script (ksh Solaris) to leak file handles?
If so, would anyone be able to give me some pointers to get me started?

---------- Post updated at 06:07 PM ---------- Previous update was at 03:44 PM ----------

Just to let you know that I found it was easier to fake the output of netstat to make it look as if more file handles were in use than actually were, so I no longer need help with this. Thanks
 
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LEARN ABOUT CENTOS

rgmanager

clusvcmgrd(8)                                                  Red Hat Cluster Suite                                                 clusvcmgrd(8)

NAME

       rgmanager - Resource Group (Cluster Service) Manager Daemon

DESCRIPTION

       rgmanager  handles  management  of  user-defined cluster services (also known as resource groups).  This includes handling of user requests
       including service start, service disable, service relocate, and service restart.  The service manager daemon also  handles  restarting  and
       relocating services in the event of failures.

HOW IT WORKS

       The  service  manager is spawned by an init script after the cluster infrastructure has been started and only functions when the cluster is
       quorate and locks are working.

       During initialization, the service manager runs scripts which ensure that all services are clear to be started.  After that, it  determines
       which services need to be started and starts them.

       When an event is received, members which are no longer online have their services taken away from them.  The event should only occur in the
       case that the member has been fenced whenever fencing is available.

       When a cluster member determines that it is no longer in the cluster quorum, the service manager stops all services and  waits  for  a  new
       quorum to form.

COMMAND LINE OPTIONS

       -f     Run in the foreground (do not fork).

       -d     Enable debug-level logging.

       -w     Disable internal process monitoring (for debugging).

       -N     Do  not perform stop-before-start.  Combined with the -Z flag to clusvcadm, this can be used to allow rgmanager to be upgraded with-
              out stopping a given user service or set of services.

SEE ALSO

       clusvcadm(8)

                                                                     Jan 2005                                                        clusvcmgrd(8)