X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=utilities%2Fovs-ctl.in;h=99d789c68b0a0c06178cd87cb80fee3ecb56070b;hb=adfb6580f0bde8ce455ce3311a56697177852d2b;hp=6bad187cd47ef4e95e72940aa62a66093c622769;hpb=a5d873f40af3b8b6faeaa050a551d42a809b8818;p=cascardo%2Fovs.git

diff --git a/utilities/ovs-ctl.in b/utilities/ovs-ctl.in
index 6bad187cd..99d789c68 100755
--- a/utilities/ovs-ctl.in
+++ b/utilities/ovs-ctl.in
@@ -1,5 +1,5 @@
 #! /bin/sh
-# Copyright (C) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
+# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -30,13 +30,33 @@ done
 ## start ##
 ## ----- ##
 
-insert_openvswitch_mod_if_required () {
+# Keep track of removed vports so we can reload them if needed
+removed_vports=""
+
+insert_mods () {
+    # Try loading openvswitch again.
+    action "Inserting openvswitch module" modprobe openvswitch
+
+    for vport in $removed_vports; do
+        # Don't treat failures to load vports as fatal error
+        action "Inserting $vport module" modprobe $vport || true
+    done
+}
+
+insert_mod_if_required () {
+    # If this kernel has no module support, expect we're done.
+    if test ! -e /proc/modules
+    then
+        log_success_msg "Kernel has no loadable module support. Skipping modprobe"
+        return 0
+    fi
+
     # If openvswitch is already loaded then we're done.
     test -e /sys/module/openvswitch -o -e /sys/module/openvswitch_mod && \
      return 0
 
     # Load openvswitch.  If that's successful then we're done.
-    action "Inserting openvswitch module" modprobe openvswitch && return 0
+    insert_mods && return 0
 
     # If the bridge module is loaded, then that might be blocking
     # openvswitch.  Try to unload it, if there are no bridges.
@@ -49,15 +69,11 @@ insert_openvswitch_mod_if_required () {
     action "removing bridge module" rmmod bridge || return 1
 
     # Try loading openvswitch again.
-    action "Inserting openvswitch module" modprobe openvswitch
-}
-
-insert_mod_if_required () {
-    insert_openvswitch_mod_if_required || return 1
+    insert_mods
 }
 
 ovs_vsctl () {
-    ovs-vsctl --no-wait --timeout=5 "$@"
+    ovs-vsctl --no-wait "$@"
 }
 
 ovsdb_tool () {
@@ -188,7 +204,6 @@ start_ovsdb () {
         done
         set "$@" -vconsole:emer -vsyslog:err -vfile:info
         set "$@" --remote=punix:"$DB_SOCK"
-        set "$@" --remote=db:Open_vSwitch,Open_vSwitch,manager_options
         set "$@" --private-key=db:Open_vSwitch,SSL,private_key
         set "$@" --certificate=db:Open_vSwitch,SSL,certificate
         set "$@" --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert
@@ -207,6 +222,19 @@ start_ovsdb () {
     fi
 }
 
+add_managers () {
+    # Now that ovs-vswitchd has started and completed its initial
+    # configuration, tell ovsdb-server to conenct to the remote managers.  We
+    # used to do this at ovsdb-server startup time, but waiting for
+    # ovs-vswitchd to finish configuring means that remote managers see less
+    # churn in the database at startup or restart.  (For example, managers
+    # won't briefly see empty datapath-id or ofport columns for records that
+    # exist at startup.)
+    action "Enabling remote OVSDB managers" \
+	ovs-appctl -t ovsdb-server ovsdb-server/add-remote \
+	    db:Open_vSwitch,Open_vSwitch,manager_options
+}
+
 start_forwarding () {
     check_force_cores
 
@@ -216,10 +244,13 @@ start_forwarding () {
         log_success_msg "ovs-vswitchd is already running"
     else
         # Increase the limit on the number of open file descriptors.
-        # On Linux, ovs-vswitchd needs about one file descriptor per
-        # switch port, so this allows a very large number of switch
-        # ports.
-        ulimit -n 5000
+        # On Linux, ovs-vswitchd needs about three file descriptors
+        # per bridge and "n-handler-threads" file descriptors per bridge
+        # port, so this allows a very large number of bridges and ports.
+        MAXFD=65535
+        if [ $(ulimit -n) -lt $MAXFD ]; then
+            ulimit -n $MAXFD
+        fi
 
 	    # Start ovs-vswitchd.
 	    set ovs-vswitchd unix:"$DB_SOCK"
@@ -279,7 +310,10 @@ ovs_save () {
 }
 
 save_ofports_if_required () {
-    # Save ofports if we are upgrading from a pre-1.10 branch.
+    # Save OpenFlow port numbers if we are upgrading from a pre-1.10 branch.
+    #
+    # (Versions 1.10 and later save OpenFlow port numbers without assistance,
+    # so we don't have to do anything for them.
     case `ovs-appctl version | sed 1q` in
         "ovs-vswitchd (Open vSwitch) 1."[0-9].*)
             action "Saving ofport values" ovs_save save-ofports \
@@ -298,6 +332,15 @@ restore_ofports () {
         action "Restoring ofport values" "${script_ofports}"
 }
 
+flow_restore_wait () {
+    ovs_vsctl set open_vswitch . other_config:flow-restore-wait="true"
+}
+
+flow_restore_complete () {
+    ovs_vsctl --if-exists remove open_vswitch . other_config \
+        flow-restore-wait="true"
+}
+
 restore_flows () {
     [ -x "${script_flows}" ] && \
         action "Restoring saved flows" "${script_flows}"
@@ -349,6 +392,7 @@ force_reload_kmod () {
     else
         log_warning_msg "Failed to save configuration, not replacing kernel module"
         start_forwarding
+        add_managers
         exit 1
     fi
     chmod +x "$script_interfaces"
@@ -357,6 +401,13 @@ force_reload_kmod () {
         action "Removing datapath: $dp" ovs-dpctl del-dp "$dp"
     done
 
+    for vport in `awk '/^vport_/ { print $1 }' /proc/modules`; do
+        action "Removing $vport module" rmmod $vport
+        if ! grep -q $vport /proc/modules; then
+            removed_vports="$removed_vports $vport"
+        fi
+    done
+
     # try both old and new names in case this is post upgrade
     if test -e /sys/module/openvswitch_mod; then
         action "Removing openvswitch module" rmmod openvswitch_mod
@@ -364,9 +415,14 @@ force_reload_kmod () {
         action "Removing openvswitch module" rmmod openvswitch
     fi
 
+    # Start vswitchd by asking it to wait till flow restore is finished.
+    flow_restore_wait
     start_forwarding
 
+    # Restore saved flows and inform vswitchd that we are done.
     restore_flows
+    flow_restore_complete
+    add_managers
 
     restore_interfaces
 
@@ -408,10 +464,15 @@ restart () {
     restore_ofports
 
     stop_forwarding
+
+    # Start vswitchd by asking it to wait till flow restore is finished.
+    flow_restore_wait
     start_forwarding
 
-    # Restore the saved flows.
+    # Restore saved flows and inform vswitchd that we are done.
     restore_flows
+    flow_restore_complete
+    add_managers
 
     # Restore the interfaces if required. Return true even if restore fails.
     restore_interfaces || true
@@ -656,8 +717,9 @@ do
 done
 case $command in
     start)
-        start_ovsdb
+        start_ovsdb || exit 1
         start_forwarding
+        add_managers
         ;;
     stop)
         stop_forwarding