## start ##
## ----- ##
+restore_datapaths () {
+ [ -n "${script_datapaths}" ] && \
+ action "Restoring datapath configuration" "${script_datapaths}"
+}
+
insert_openvswitch_mod_if_required () {
# 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
+ if action "Inserting openvswitch module" modprobe openvswitch; then
+ restore_datapaths
+ return 0
+ fi
# If the bridge module is loaded, then that might be blocking
# openvswitch. Try to unload it, if there are no bridges.
# Try loading openvswitch again.
action "Inserting openvswitch module" modprobe openvswitch
+ restore_datapaths
}
insert_brcompat_mod_if_required () {
insert_mod_if_required () {
insert_openvswitch_mod_if_required || return 1
if test X"$BRCOMPAT" = Xyes; then
- insert_brcompat_mod_if_required || return 1
+ if insert_brcompat_mod_if_required; then
+ :
+ else
+ log_warning_msg "could not load brcompat module, disabling bridge compatibility"
+ BRCOMPAT=no
+ fi
fi
}
action "Configuring Open vSwitch system IDs" "$@" $extra_ids
}
-start () {
+check_force_cores () {
if test X"$FORCE_COREFILES" = Xyes; then
ulimit -Sc 67108864
fi
+}
- insert_mod_if_required || return 1
+start_ovsdb () {
+ check_force_cores
if daemon_is_running ovsdb-server; then
- log_success_msg "ovsdb-server is already running"
+ log_success_msg "ovsdb-server is already running"
else
- # Create initial database or upgrade database schema.
- upgrade_db || return 1
-
- # Start ovsdb-server.
- set ovsdb-server "$DB_FILE"
- set "$@" -vconsole:emer -vsyslog:err -vfile:info
- set "$@" --remote=punix:"$DB_SOCK"
- set "$@" --remote=db:Open_vSwitch,manager_options
- set "$@" --private-key=db:SSL,private_key
- set "$@" --certificate=db:SSL,certificate
- set "$@" --bootstrap-ca-cert=db:SSL,ca_cert
- start_daemon "$OVSDB_SERVER_PRIORITY" "$@" || return 1
-
- # Initialize database settings.
- ovs_vsctl -- init -- set Open_vSwitch . db-version="$schemaver" \
- || return 1
- set_system_ids || return 1
- if test X"$DELETE_BRIDGES" = Xyes; then
+ # Create initial database or upgrade database schema.
+ upgrade_db || return 1
+
+ # Start ovsdb-server.
+ set ovsdb-server "$DB_FILE"
+ for db in $EXTRA_DBS; do
+ case $db in
+ /*) ;;
+ *) db=$dbdir/$db ;;
+ esac
+
+ if test ! -f "$db"; then
+ log_warning_msg "$db (from \$EXTRA_DBS) does not exist."
+ elif ovsdb-tool db-version "$db" >/dev/null; then
+ set "$@" "$db"
+ else
+ log_warning_msg "$db (from \$EXTRA_DBS) cannot be read as a database (see error message above)"
+ fi
+ done
+ set "$@" -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
+ start_daemon "$OVSDB_SERVER_PRIORITY" "$OVSDB_SERVER_WRAPPER" "$@" \
+ || return 1
+
+ # Initialize database settings.
+ ovs_vsctl -- init -- set Open_vSwitch . db-version="$schemaver" \
+ || return 1
+ set_system_ids || return 1
+ if test X"$DELETE_BRIDGES" = Xyes; then
for bridge in `ovs_vsctl list-br`; do
- ovs_vsctl del-br $bridge
+ ovs_vsctl del-br $bridge
done
- fi
+ fi
fi
+}
+
+start_forwarding () {
+ check_force_cores
+
+ insert_mod_if_required || return 1
if daemon_is_running ovs-vswitchd; then
- log_success_msg "ovs-vswitchd is already running"
+ log_success_msg "ovs-vswitchd is already running"
else
- # Increase the limit on the number of open file descriptors.
- # ovs-vswitchd needs 16 per datapath, plus a few extra, so this
- # should allow for 256 (or more) bridges.
- ulimit -n 5000
-
- # Start ovs-vswitchd.
- set ovs-vswitchd unix:"$DB_SOCK"
- set "$@" -vconsole:emer -vsyslog:err -vfile:info
- if test X"$MLOCKALL" != Xno; then
- set "$@" --mlockall
- fi
- start_daemon "$OVS_VSWITCHD_PRIORITY" "$@"
+ # Increase the limit on the number of open file descriptors.
+ # ovs-vswitchd needs 16 per datapath, plus a few extra, so this
+ # should allow for 256 (or more) bridges.
+ ulimit -n 5000
+
+ # Start ovs-vswitchd.
+ set ovs-vswitchd unix:"$DB_SOCK"
+ set "$@" -vconsole:emer -vsyslog:err -vfile:info
+ if test X"$MLOCKALL" != Xno; then
+ set "$@" --mlockall
+ fi
+ start_daemon "$OVS_VSWITCHD_PRIORITY" "$OVS_VSWITCHD_WRAPPER" "$@"
fi
if daemon_is_running ovs-brcompatd; then
- log_success_msg "ovs-brcompatd is already running"
+ log_success_msg "ovs-brcompatd is already running"
elif test X"$BRCOMPAT" = Xyes; then
set ovs-brcompatd
- set "$@" -vconsole:emer -vsyslog:err -vfile:info
- start_daemon "$OVS_BRCOMPATD_PRIORITY" "$@"
+ set "$@" -vconsole:emer -vsyslog:err -vfile:info
+ start_daemon "$OVS_BRCOMPATD_PRIORITY" "$OVS_BRCOMPATD_WRAPPER" "$@"
fi
}
## stop ##
## ---- ##
-stop () {
+stop_ovsdb () {
+ stop_daemon ovsdb-server
+}
+
+stop_forwarding () {
stop_daemon ovs-brcompatd
stop_daemon ovs-vswitchd
- stop_daemon ovsdb-server
}
## ----------------- ##
# But ignore interfaces that don't really exist.
for d in `(ovs_vsctl --bare \
-- --columns=name find Interface type=internal \
- -- list-br) | sort -u`
+ -- list-br) | sort -u`
do
if test -e "/sys/class/net/$d"; then
- printf "%s " "$d"
- fi
+ printf "%s " "$d"
+ fi
done
}
+save_flows () {
+ if set X `ovs_vsctl list-br`; then
+ shift
+ if "$datadir/scripts/ovs-save" save-flows "$@" > "$script_flows"; then
+ chmod +x "$script_flows"
+ return 0
+ fi
+ fi
+ script_flows=
+ return 1
+}
+
save_interfaces () {
- "$datadir/scripts/ovs-save" $ifaces > "$script"
+ "$datadir/scripts/ovs-save" save-interfaces ${ifaces} \
+ > "${script_interfaces}"
+}
+
+save_datapaths () {
+ "$datadir/scripts/ovs-save" save-datapaths ${datapaths} \
+ > "${script_datapaths}"
+}
+
+restore_flows () {
+ [ -n "${script_flows}" ] && \
+ action "Restoring saved flows" "${script_flows}"
}
force_reload_kmod () {
ifaces=`internal_interfaces`
action "Detected internal interfaces: $ifaces" true
- stop
+ script_interfaces=`mktemp`
+ script_datapaths=`mktemp`
+ script_flows=`mktemp`
+ trap 'rm -f "${script_interfaces}" "${script_flows}" \
+ "${script_datapaths}"' 0 1 2 13 15
+
+ action "Saving flows" save_flows
+
+ # Restart the database first, since a large database may take a
+ # while to load, and we want to minimize forwarding disruption.
+ stop_ovsdb
+ start_ovsdb
+
+ stop_forwarding
- script=`mktemp`
- trap 'rm -f "$script"' 0 1 2 13 15
if action "Saving interface configuration" save_interfaces; then
:
else
log_warning_msg "Failed to save configuration, not replacing kernel module"
- start
+ start_forwarding
exit 1
fi
- chmod +x "$script"
+ chmod +x "$script_interfaces"
+
+ datapaths=`ovs-dpctl dump-dps`
+ if action "Saving datapath configuration" save_datapaths; then
+ chmod +x "${script_datapaths}"
+ else
+ log_warning_msg "Failed to save datapath configuration. The port\
+ numbers may change after the restart"
+ script_datapaths=""
+ fi
- for dp in `ovs-dpctl dump-dps`; do
+ for dp in ${datapaths}; do
action "Removing datapath: $dp" ovs-dpctl del-dp "$dp"
done
action "Removing openvswitch module" rmmod openvswitch
fi
- start
+ start_forwarding
- action "Restoring interface configuration" "$script"
+ restore_flows
+
+ action "Restoring interface configuration" "$script_interfaces"
rc=$?
if test $rc = 0; then
level=debug
fi
log="logger -p daemon.$level -t ovs-save"
$log "force-reload-kmod interface restore script exited with status $rc:"
- $log -f "$script"
+ $log -f "$script_interfaces"
"$datadir/scripts/ovs-check-dead-ifs"
}
+## ------- ##
+## restart ##
+## ------- ##
+
+restart () {
+ if daemon_is_running ovsdb-server && daemon_is_running ovs-vswitchd; then
+ script_flows=`mktemp`
+ trap 'rm -f "${script_flows}"' 0 1 2 13 15
+
+ action "Saving flows" save_flows
+ fi
+
+ # Restart the database first, since a large database may take a
+ # while to load, and we want to minimize forwarding disruption.
+ stop_ovsdb
+ start_ovsdb
+
+ stop_forwarding
+ start_forwarding
+
+ # Restore the saved flows. Do not return error if restore fails.
+ restore_flows || true
+}
+
## --------------- ##
## enable-protocol ##
## --------------- ##
OVSDB_SERVER_PRIORITY=-10
OVS_VSWITCHD_PRIORITY=-10
OVS_BRCOMPATD_PRIORITY=-10
+ OVSDB_SERVER_WRAPPER=
+ OVS_VSWITCHD_WRAPPER=
+ OVS_BRCOMPATD_WRAPPER=
- DB_FILE=$etcdir/conf.db
+ DB_FILE=$dbdir/conf.db
DB_SOCK=$rundir/db.sock
DB_SCHEMA=$datadir/vswitch.ovsschema
+ EXTRA_DBS=
PROTOCOL=gre
DPORT=
Commands:
start start Open vSwitch daemons
stop stop Open vSwitch daemons
+ restart stop and start Open vSwitch daemons
status check whether Open vSwitch daemons are running
version print versions of Open vSwitch daemons
load-kmod insert modules if not already present
enable-protocol enable protocol specified in options with iptables
help display this help message
-One of the following options is required for "start" and "force-reload-kmod":
+One of the following options is required for "start", "restart" and "force-reload-kmod":
--system-id=UUID set specific ID to uniquely identify this system
--system-id=random use a random but persistent UUID to identify this system
-Other important options for "start" and "force-reload-kmod":
+Other important options for "start", "restart" and "force-reload-kmod":
--system-type=TYPE set system type (e.g. "XenServer")
--system-version=VERSION set system version (e.g. "5.6.100-39265p")
--external-id="key=value"
add given key-value pair to Open_vSwitch external-ids
--delete-bridges delete all bridges just before starting ovs-vswitchd
-Less important options for "start" and "force-reload-kmod":
+Less important options for "start", "restart" and "force-reload-kmod":
--daemon-cwd=DIR set working dir for OVS daemons (default: $DAEMON_CWD)
--no-force-corefiles do not force on core dumps for OVS daemons
--no-mlockall do not lock all of ovs-vswitchd into memory
--ovs-vswitchd-priority=NICE set ovs-vswitchd's niceness (default: $OVS_VSWITCHD_PRIORITY)
--ovs-brcompatd-priority=NICE set ovs-brcompatd's niceness (default: $OVS_BRCOMPATD_PRIORITY)
-Options for "start", "force-reload-kmod", "load-kmod", "status", and "version":
+Debugging options for "start", "restart" and "force-reload-kmod":
+ --ovsdb-server-wrapper=WRAPPER
+ --ovs-vswitchd-wrapper=WRAPPER
+ --ovs-vswitchd-wrapper=WRAPPER
+ run specified daemon under WRAPPER (either 'valgrind' or 'strace')
+
+Options for "start", "restart", "force-reload-kmod", "load-kmod", "status", and "version":
--brcompat enable Linux bridge compatibility module and daemon
File location options:
-V, --version display version information
Default directories with "configure" option and environment variable override:
- logs: @LOGDIR@ (--log-dir, OVS_LOGDIR)
- pidfiles and sockets: @RUNDIR@ (--run-dir, OVS_RUNDIR)
+ logs: @LOGDIR@ (--with-logdir, OVS_LOGDIR)
+ pidfiles and sockets: @RUNDIR@ (--with-rundir, OVS_RUNDIR)
+ conf.db: @DBDIR@ (--with-dbdir, OVS_DBDIR)
system configuration: @sysconfdir@ (--sysconfdir, OVS_SYSCONFDIR)
data files: @pkgdatadir@ (--pkgdatadir, OVS_PKGDATADIR)
user binaries: @bindir@ (--bindir, OVS_BINDIR)
done
case $command in
start)
- start
+ start_ovsdb
+ start_forwarding
;;
stop)
- stop
+ stop_forwarding
+ stop_ovsdb
+ ;;
+ restart)
+ restart
;;
status)
rc=0
done
;;
force-reload-kmod)
- force_reload_kmod
+ force_reload_kmod
;;
load-kmod)
insert_mod_if_required
exit 1
;;
esac
-