Enable daemon monitoring and automatic restart by default.

Tested on a XenServer by running "kill -SEGV" on the daemon processes and
watching them restart automatically and by running plain "kill" and
watching them terminate normally.

diff --git a/debian/openvswitch-switch.init b/debian/openvswitch-switch.init
index 5d37d70..1f65b69 100755 (executable)
--- a/debian/openvswitch-switch.init
+++ b/debian/openvswitch-switch.init
@@ -33,11 +33,14 @@ DODTIME=1                   # Time to wait for the server to die, in seconds
 unset OVSDB_SERVER_OPTS
 unset OVS_VSWITCHD_OPTS
 unset CORE_LIMIT
+unset ENABLE_MONITOR
 default=/etc/default/openvswitch-switch
 if [ -f $default ] ; then
     . $default
 fi
 
+: ${ENABLE_MONITOR:=y}
+
 set -e
 
 # running_pid pid name
@@ -209,11 +212,17 @@ case "$1" in
                 /usr/share/openvswitch/vswitch-idl.ovsschema
         fi
 
+        if test "$ENABLE_MONITOR" = y; then
+            monitor_opt=--monitor
+        else
+            monitor_opt=
+        fi
+
         # Start ovsdb-server.
         set --
         set -- "$@" --verbose=ANY:console:emer --verbose=ANY:syslog:err
         set -- "$@" --log-file
-        set -- "$@" --detach --pidfile
+        set -- "$@" --detach --pidfile $monitor_opt
         set -- "$@" --remote punix:/var/run/ovsdb-server
         set -- "$@" /etc/openvswitch-switch/conf
         set -- "$@" $OVSDB_SERVER_OPTS
@@ -232,7 +241,7 @@ case "$1" in
         set --
         set -- "$@" --verbose=ANY:console:emer --verbose=ANY:syslog:err
         set -- "$@" --log-file
-        set -- "$@" --detach --pidfile
+        set -- "$@" --detach --pidfile $monitor_opt
         set -- "$@" unix:/var/run/ovsdb-server
         set -- "$@" $OVS_VSWITCHD_OPTS
         echo -n "Starting ovs-vswitchd: "

diff --git a/debian/openvswitch-switch.template b/debian/openvswitch-switch.template
index 6da1ed7..e36fc68 100644 (file)
--- a/debian/openvswitch-switch.template
+++ b/debian/openvswitch-switch.template
@@ -19,3 +19,7 @@ OVS_VSWITCHD_OPTS=
 # will disable core dumps.  Setting it to "unlimited" will dump all
 # core files regardless of size.
 #CORE_LIMIT=unlimited
+
+# ENABLE_MONITOR: If 'y' then monitor daemon processes and restart them
+#    if they die due to an error signal.
+# ENABLE_MONITOR=y

diff --git a/xenserver/etc_init.d_vswitch b/xenserver/etc_init.d_vswitch
index 788c428..eb5dcb3 100755 (executable)
--- a/xenserver/etc_init.d_vswitch
+++ b/xenserver/etc_init.d_vswitch
@@ -26,6 +26,7 @@ test -e /etc/sysconfig/vswitch && . /etc/sysconfig/vswitch
 # General config variables in /etc/sysconfig/vswitch
 : ${ENABLE_BRCOMPAT:=y}
 : ${ENABLE_FAKE_PROC_NET:=y}
+: ${ENABLE_MONITOR:=y}
 : ${FORCE_COREFILES:=y}
 
 # Config variables specific to ovsdb-server
@@ -81,7 +82,6 @@ appctl="/usr/bin/ovs-appctl"
 ofctl="/usr/bin/ovs-ofctl"
 vsctl="/usr/bin/ovs-vsctl"
 
-
 if [ "$ENABLE_FAKE_PROC_NET" = "y" ]; then
     if [ "$ENABLE_BRCOMPAT" != "y" ]; then
         warning "FAKE_PROC_NET required BRCOMPAT which was disabled.  Force enabling."
@@ -89,6 +89,12 @@ if [ "$ENABLE_FAKE_PROC_NET" = "y" ]; then
     fi
 fi
 
+if test "$ENABLE_MONITOR" = "y"; then
+    monitor_opt="--monitor"
+else
+    monitor_opt=
+fi
+
 function dp_list {
     "$dpctl" show | grep '^dp[0-9]\+:' | cut -d':' -f 1
 }
@@ -168,9 +174,9 @@ function start_ovsdb_server {
     if [ "$daemonize" != "y" ]; then
         # Start in background and force a "success" message
         action "Starting ovsdb_server ($strace_opt$valgrind_opt)" true
-        (nice -n "$OVSDB_SERVER_PRIORITY" $strace_opt $valgrind_opt "$ovsdb_server" "$OVSDB_SERVER_DB" --pidfile="$OVSDB_SERVER_PIDFILE" --detach --no-chdir -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt $remotes) &
+        (nice -n "$OVSDB_SERVER_PRIORITY" $strace_opt $valgrind_opt "$ovsdb_server" "$OVSDB_SERVER_DB" --pidfile="$OVSDB_SERVER_PIDFILE" --detach $monitor_opt --no-chdir -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt $remotes) &
     else
-        action "Starting ovsdb-server" nice -n "$OVSDB_SERVER_PRIORITY" "$ovsdb_server" "$OVSDB_SERVER_DB" --pidfile="$OVSDB_SERVER_PIDFILE" --detach --no-chdir -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt $remotes
+        action "Starting ovsdb-server" nice -n "$OVSDB_SERVER_PRIORITY" "$ovsdb_server" "$OVSDB_SERVER_DB" --pidfile="$OVSDB_SERVER_PIDFILE" --detach $monitor_opt --no-chdir -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt $remotes
     fi
 }
 
@@ -214,9 +220,9 @@ function start_vswitchd {
     if [ "$daemonize" != "y" ]; then
         # Start in background and force a "success" message
         action "Starting ovs-vswitchd ($strace_opt$valgrind_opt)" true
-        (nice -n "$VSWITCHD_PRIORITY" $strace_opt $valgrind_opt "$vswitchd" --pidfile="$VSWITCHD_PIDFILE" --detach --no-chdir $fake_proc_net_opt -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_OVSDB_SERVER") &
+        (nice -n "$VSWITCHD_PRIORITY" $strace_opt $valgrind_opt "$vswitchd" --pidfile="$VSWITCHD_PIDFILE" --detach $monitor_opt --no-chdir $fake_proc_net_opt -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_OVSDB_SERVER") &
     else
-        action "Starting ovs-vswitchd" nice -n "$VSWITCHD_PRIORITY" "$vswitchd" --pidfile="$VSWITCHD_PIDFILE" --detach --no-chdir $fake_proc_net_opt -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_OVSDB_SERVER"
+        action "Starting ovs-vswitchd" nice -n "$VSWITCHD_PRIORITY" "$vswitchd" --pidfile="$VSWITCHD_PIDFILE" --detach $monitor_opt --no-chdir $fake_proc_net_opt -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_OVSDB_SERVER"
     fi
 }
 
@@ -259,7 +265,7 @@ function start_brcompatd {
         action "Starting ovs-brcompatd ($strace_opt$valgrind_opt)" true
         (nice -n "$VSWITCHD_PRIORITY" $strace_opt $valgrind_opt "$brcompatd"--no-chdir --appctl-command="$appctl_cmd" --pidfile=$BRCOMPATD_PIDFILE -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_OVSDB_SERVER") &
     else
-        action "Starting ovs-brcompatd" nice -n "$BRCOMPATD_PRIORITY" $strace_opt $valgrind_opt "$brcompatd" --no-chdir --appctl-command="$appctl_cmd" --pidfile=$BRCOMPATD_PIDFILE --detach -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_OVSDB_SERVER"
+        action "Starting ovs-brcompatd" nice -n "$BRCOMPATD_PRIORITY" $strace_opt $valgrind_opt "$brcompatd" --no-chdir --appctl-command="$appctl_cmd" --pidfile=$BRCOMPATD_PIDFILE --detach $monitor_opt -vANY:CONSOLE:EMER $syslog_opt $logfile_level_opt $logfile_file_opt $leak_opt "$VSWITCHD_OVSDB_SERVER"
     fi
 }
 

diff --git a/xenserver/usr_share_vswitch_scripts_sysconfig.template b/xenserver/usr_share_vswitch_scripts_sysconfig.template
index 2651cc3..b9d7ecb 100644 (file)
--- a/xenserver/usr_share_vswitch_scripts_sysconfig.template
+++ b/xenserver/usr_share_vswitch_scripts_sysconfig.template
@@ -1,6 +1,6 @@
 ### Configuration options for vswitch
 
-# Copyright (C) 2009 Nicira Networks, Inc.
+# Copyright (C) 2009, 2010 Nicira Networks, Inc.
 #
 # Copying and distribution of this file, with or without modification,
 # are permitted in any medium without royalty provided the copyright
@@ -17,6 +17,10 @@
 #    This is useful in some cases when replacing existing solutions.
 # ENABLE_FAKE_PROC_NET=y
 
+# ENABLE_MONITOR: If 'y' then monitor daemon processes and restart them
+#    if they die due to an error signal.
+# ENABLE_MONITOR=y
+
 # FORCE_COREFILES: If 'y' then core files will be enabled.
 # FORCE_COREFILES=y