#! /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.
## start ##
## ----- ##
+# 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 $vport || true
+ done
+}
+
insert_mod_if_required () {
+ # If this kernel has no module support, expect we're done.
+ if test ! -e /proc/modules
+ then
+ log_success_msg "Kernel has no loadable module support. Skipping modprobe"
+ return 0
+ fi
+
# If openvswitch is already loaded then we're done.
test -e /sys/module/openvswitch -o -e /sys/module/openvswitch_mod && \
return 0
# Load openvswitch. If that's successful then we're done.
- action "Inserting openvswitch module" modprobe openvswitch && return 0
+ insert_mods && return 0
# If the bridge module is loaded, then that might be blocking
# openvswitch. Try to unload it, if there are no bridges.
action "removing bridge module" rmmod bridge || return 1
# Try loading openvswitch again.
- action "Inserting openvswitch module" modprobe openvswitch
+ insert_mods
}
ovs_vsctl () {
ovs-vsctl --no-wait "$@"
}
-ovsdb_tool () {
- ovsdb-tool -vconsole:off "$@"
-}
-
-create_db () {
- action "Creating empty database $DB_FILE" ovsdb_tool create "$DB_FILE" "$DB_SCHEMA"
-}
-
-upgrade_db () {
- schemaver=`ovsdb_tool schema-version "$DB_SCHEMA"`
- if test ! -e "$DB_FILE"; then
- log_warning_msg "$DB_FILE does not exist"
- install -d -m 755 -o root -g root `dirname $DB_FILE`
- create_db
- elif test X"`ovsdb_tool needs-conversion "$DB_FILE" "$DB_SCHEMA"`" != Xno; then
- # Back up the old version.
- version=`ovsdb_tool db-version "$DB_FILE"`
- cksum=`ovsdb_tool db-cksum "$DB_FILE" | awk '{print $1}'`
- backup=$DB_FILE.backup$version-$cksum
- action "Backing up database to $backup" cp "$DB_FILE" "$backup" || return 1
-
- # Compact database. This is important if the old schema did not enable
- # garbage collection (i.e. if it did not have any tables with "isRoot":
- # true) but the new schema does. In that situation the old database
- # may contain a transaction that creates a record followed by a
- # transaction that creates the first use of the record. Replaying that
- # series of transactions against the new database schema (as "convert"
- # does) would cause the record to be dropped by the first transaction,
- # then the second transaction would cause a referential integrity
- # failure (for a strong reference).
- #
- # Errors might occur on an Open vSwitch downgrade if ovsdb-tool doesn't
- # understand some feature of the schema used in the OVSDB version that
- # we're downgrading from, so we don't give up on error.
- action "Compacting database" ovsdb_tool compact "$DB_FILE"
-
- # Upgrade or downgrade schema.
- if action "Converting database schema" ovsdb_tool convert "$DB_FILE" "$DB_SCHEMA"; then
- :
- else
- log_warning_msg "Schema conversion failed, using empty database instead"
- rm -f "$DB_FILE"
- create_db
- fi
- fi
-}
-
set_system_ids () {
set ovs_vsctl set Open_vSwitch .
fi
}
+del_transient_ports () {
+ for port in `ovs-vsctl --bare -- --columns=name find port other_config:transient=true`; do
+ ovs_vsctl -- del-port "$port"
+ done
+}
+
start_ovsdb () {
check_force_cores
log_success_msg "ovsdb-server is already running"
else
# Create initial database or upgrade database schema.
- upgrade_db || return 1
+ upgrade_db $DB_FILE $DB_SCHEMA || return 1
# Start ovsdb-server.
set ovsdb-server "$DB_FILE"
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 $bridge
done
fi
+ if test X"$DELETE_TRANSIENT_PORTS" = Xyes; then
+ del_transient_ports
+ fi
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
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"
fi
start_daemon "$OVS_VSWITCHD_PRIORITY" "$OVS_VSWITCHD_WRAPPER" "$@"
fi
-
- # Now that ovs-vswitchd has started and completed its initial
- # configuration, tell ovsdb-server to conenct to the remote managers. We
- # used to do this at ovsdb-server startup time, but waiting for
- # ovs-vswitchd to finish configuring means that remote managers see less
- # churn in the database at startup or restart. (For example, managers
- # won't briefly see empty datapath-id or ofport columns for records that
- # exist at startup.)
- action "Enabling remote OVSDB managers" \
- ovs-appctl -t ovsdb-server ovsdb-server/add-remote \
- db:Open_vSwitch,Open_vSwitch,manager_options
}
## ---- ##
}
save_ofports_if_required () {
- # Save ofports if we are upgrading from a pre-1.10 branch.
+ # Save OpenFlow port numbers if we are upgrading from a pre-1.10 branch.
+ #
+ # (Versions 1.10 and later save OpenFlow port numbers without assistance,
+ # so we don't have to do anything for them.
case `ovs-appctl version | sed 1q` in
"ovs-vswitchd (Open vSwitch) 1."[0-9].*)
action "Saving ofport values" ovs_save save-ofports \
esac
}
+save_flows_if_required () {
+ if test X"$DELETE_BRIDGES" != Xyes; then
+ action "Saving flows" ovs_save save-flows "${script_flows}"
+ fi
+}
+
save_interfaces () {
"$datadir/scripts/ovs-save" save-interfaces ${ifaces} \
> "${script_interfaces}"
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}"
action "Detected internal interfaces: $ifaces" true
init_restore_scripts
-
- action "Saving flows" ovs_save save-flows "${script_flows}"
-
+ save_flows_if_required
save_ofports_if_required
# Restart the database first, since a large database may take a
else
log_warning_msg "Failed to save configuration, not replacing kernel module"
start_forwarding
+ add_managers
exit 1
fi
chmod +x "$script_interfaces"
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 $vport"
+ fi
+ done
+
# try both old and new names in case this is post upgrade
if test -e /sys/module/openvswitch_mod; then
action "Removing openvswitch module" rmmod openvswitch_mod
action "Removing openvswitch module" rmmod openvswitch
fi
+ # Start vswitchd by asking it to wait till flow restore is finished.
+ flow_restore_wait
start_forwarding
+ # Restore saved flows and inform vswitchd that we are done.
restore_flows
+ flow_restore_complete
+ add_managers
restore_interfaces
if daemon_is_running ovsdb-server && daemon_is_running ovs-vswitchd; then
init_restore_scripts
save_interfaces_if_required
- action "Saving flows" ovs_save save-flows "${script_flows}"
+ save_flows_if_required
save_ofports_if_required
fi
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
SYSTEM_ID=
DELETE_BRIDGES=no
+ DELETE_TRANSIENT_PORTS=no
DAEMON_CWD=/
FORCE_COREFILES=yes
done
case $command in
start)
- start_ovsdb
+ start_ovsdb || exit 1
start_forwarding
+ add_managers
;;
stop)
stop_forwarding
projects / cascardo / ovs.git / blobdiff