ovs-ctl: Allow to set custom core file size for ovs daemons.

Allow to set custom core file size with --ulimit-core argument.
This argument can be set in ovs config file
in rhel can set OPTIONS in /etc/sysconfig/openvswitch
in debian can set OVS_CTL_OPTS in /etc/default/openvswitch-switch.

Acked-by: Gaetan Rivet <gaetanr@nvidia.com>
Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>

Documentation/ref/ovs-ctl.8.rst

@@ -199,6 +199,11 @@ The following options are less important:
   Sets the Linux Out-Of-Memory (OOM) killer score for the OVS daemon
   after it's been started.
 
+* ``--ulimit-core=<LIMIT>``
+
+  Sets ulimit core file size for the OVS daemon after it's
+  been started.
+
 * ``--ovsdb-server-priority=<niceness>`` or
   ``--ovs-vswitchd-priority=<niceness>``
 

NEWS

@@ -9,6 +9,8 @@ Post-v3.5.0
    - ovs-ctl:
      * Added a new option, --oom-score=<score>, to set the daemons' Linux
        Out-Of-Memory (OOM) killer score.
+     * Added a new option, --ulimit-core=<LIMIT>, to set the daemon's ulimit
+       core file size.
    - ovs-appctl:
      * Added JSON output support to the 'ovs/route/show' command.
    - SSL/TLS:

utilities/ovs-ctl.in

@@ -110,7 +110,7 @@ check_core_config () {
             ulimit -c unlimited
         fi
     elif test X"$FORCE_COREFILES" = Xyes; then
-        ulimit -c 67108864
+        ulimit -c $ULIMIT_CORE
     fi
 }
 
@@ -357,6 +357,7 @@ set_defaults () {
     OVSDB_SERVER_UMASK=
     OVS_VSWITCHD_UMASK=
     OOM_SCORE=
+    ULIMIT_CORE=67108864
 
     DB_FILE=$dbdir/conf.db
     DB_SOCK=$rundir/db.sock
@@ -450,6 +451,7 @@ Less important options for "start", "restart" and "force-reload-kmod":
   --no-record-hostname           do not attempt to determine/record system
                                  hostname as part of start command
   --oom-score=SCORE              Set oom-score after starting ovs daemon.
+  --ulimit-core=LIMIT            Set ulimit core file size.
 
 Debugging options for "start", "restart" and "force-reload-kmod":
   --ovsdb-server-wrapper=WRAPPER