# HG changeset patch
# User igor
# Date 1190908589 -10800
# Node ID b6dc3480caae8d5bd5540137b3d56eb20535d903

xen-drbd merge

diff -r 000000000000 -r b6dc3480caae INSTALL
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/INSTALL	Thu Sep 27 18:56:29 2007 +0300
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+DEST_DIR=/usr/bin
+
+cp init.d-xen-drbd /etc/init.d/xen-drbd
+chmod +x /etc/init.d/xen-drbd
+
+cp xen-scripts-network-xen-drbd /etc/xen/scripts/network-xen-drbd
+chmod +x /etc/xen/scripts/network-xen-drbd
+
+cp default-xen-drbd /etc/default/xen-drbd
+cp xen-drbd-start.py /etc/xen/xen-drbd-start
+cp xen-drbd.py ${DEST_DIR}
+
+for i in 2 3 4 5
+do
+	ln -sf ../init.d/xen-drbd /etc/rc$i.d/S95xen-drbd
+	#rm /etc/rc$i.d/S22xen-drbd
+done
+
+for i in 0 1 6
+do
+	ln -sf ../init.d/xen-drbd /etc/rc$i.d/K05xen-drbd
+	#rm /etc/rc$i.d/K21xen-drbd
+done
+
+
diff -r 000000000000 -r b6dc3480caae config-example.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/config-example.py	Thu Sep 27 18:56:29 2007 +0300
@@ -0,0 +1,86 @@
+
+node1='dom0'
+node2='dom0m'
+i_am=node1
+
+ip_address = {
+	node1: '192.168.1.190',
+	node2: '192.168.1.191'
+}
+
+node1_ip=ip_address[node1]
+node2_ip=ip_address[node2]
+
+domains=['log', 'dns', 'gw', 'igw', 'ldap', 'mail', 'proxy', 'samba', 'vpn', 'intraweb', 'jabber'] 
+
+domain_home = {
+		node1 : ['log', 'dns', 'gw', 'igw', 'ldap', 'mail', 'proxy', 'vpn', 'intraweb', 'jabber'], 
+		node2 : ['samba'], 
+	}
+
+kernel = "/boot/vmlinuz-2.6.18-5-xen-686"
+ramdisk = "/boot/initrd.img-2.6.18-5-xen-686"
+
+mem_table={
+	'log'	:256, 
+	'dns'	:64, 
+	'gw' 	:64, 
+	'igw'	:128, 
+	'ldap'	:64, 
+	'mail'	:256, 
+	'proxy'	:256, 
+	'samba'	:256, 
+	'vpn'	:64,
+	'web'	:128,
+	'intraweb':128,
+	'jabber':64,
+}
+
+lvm_vg_name="XEN"
+disk_table={
+	'log'		: ['10G'], 
+	'dns'		: ['2G'], 
+	'gw' 		: ['2G'], 
+	'igw'		: ['2G'], 
+	'ldap'		: ['2G'], 
+	'mail'		: ['2G','maildir:2G'], 
+	'proxy'		: ['10G'], 
+	'samba'		: ['2G','samba-share:2G'],
+	'vpn'		: ['2G'],
+	'web'		: ['10G'],
+	'intraweb'	: ['10G'],
+	'jabber'	: ['2G'],
+}
+
+bridges=['br0','br1']
+vlans=[4094,4093]
+management_vlan=4094		# vlan 2
+trunk='eth1'
+management_ip=ip_address[i_am]
+management_gw='192.168.1.197'
+
+vbridges_table={
+	'log'		: ['br1'], 
+	'dns'		: ['br1'], 
+	'gw' 		: ['br0', 'br1'], 
+	'igw'		: ['br1'], 
+	'ldap'		: ['br1'], 
+	'mail'		: ['br1'], 
+	'proxy'		: ['br1'], 
+	'samba'		: ['br1'],
+	'vpn'		: ['br1'],
+	'web'		: ['br1'],
+	'intraweb'	: ['br1'],
+	'jabber'	: ['br1'],
+}
+
+ip_network="192.168.3"
+domain_name="example.com"
+ip_nameserver="192.168.3.2"
+ip_gateway="192.168.3.3"
+
+debian_release="etch"
+debian_mirror="http://debian.org.ua/debian"
+apt_get_install="less tcpdump libpam-ldap libnss-ldap snmpd libc6-xen openssh-server"
+
+
diff -r 000000000000 -r b6dc3480caae default-xen-drbd
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/default-xen-drbd	Thu Sep 27 18:56:29 2007 +0300
@@ -0,0 +1,4 @@
+XEN_DRBD_PATH='/usr/local/bin'
+TOPOLOGY_NAME='eb'
+START_ACTION=nothing 	#migrate-and-start-all
+
diff -r 000000000000 -r b6dc3480caae init.d-xen-drbd
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/init.d-xen-drbd	Thu Sep 27 18:56:29 2007 +0300
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+XEN_DRBD_PATH='/usr/bin'
+TOPOLOGY_NAME='xen-drbd'
+START_ACTION='nothing'
+[ -e /etc/default/xen-drbd ] && . /etc/default/xen-drbd
+
+case $1 in
+		start)
+			$XEN_DRBD_PATH/xen-drbd-install.py ${TOPOLOGY_NAME} make-links | sh -s
+			if [ -z "$START_ACTION" ] || echo $START_ACTION | grep -qix nothing 
+			then
+				true
+			else
+				$XEN_DRBD_PATH/xen-drbd.py $START_ACTION
+			fi
+		;;
+		stop)
+			$XEN_DRBD_PATH/xen-drbd.py migrate-all-out
+		;;
+		*)
+			echo $0 'start|stop'
+		;;
+esac
+
diff -r 000000000000 -r b6dc3480caae xen-drbd-install.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xen-drbd-install.py	Thu Sep 27 18:56:29 2007 +0300
@@ -0,0 +1,273 @@
+#!/usr/bin/python
+
+import sys
+
+network=sys.argv[1]
+try:
+	exec 'from %s import domains,disk_table,lvm_vg_name,node1,node1_ip,node2,node2_ip, \
+		  ip_network, domain_name, ip_nameserver, ip_gateway, apt_get_install, \
+		  debian_release, debian_mirror, \
+		  bridges, vlans, management_vlan, trunk, management_ip, management_gw ' % (network)
+except:
+	print "Can't find or interpret module %s with topology description" %(network)
+	sys.exit(1)
+
+drbd_base_port=7790
+meta_disk='/dev/%s/meta'%lvm_vg_name
+drbd_devices=[]
+
+def make_lvm(do_print=1):
+		if do_print:
+				print "lvcreate -L %s -n %s /dev/%s" % ("10G", "meta", lvm_vg_name)
+		for dom in domains:
+			for disk in disk_table[dom]:
+				if disk.find(":") == -1:
+					if do_print:
+						print "lvcreate -L %s -n %s /dev/%s" % (disk, dom, lvm_vg_name)
+					drbd_devices.append([dom, "/dev/%s/%s" % (lvm_vg_name, dom)])
+				else:
+					if do_print:
+						print "lvcreate -L %s -n %s /dev/%s" % (disk.split(':')[1], disk.split(':')[0], lvm_vg_name)
+					drbd_devices.append([disk.split(':')[0], "/dev/%s/%s" % (lvm_vg_name, disk.split(':')[0])])
+
+
+def make_drbdconf():
+		print "cat <<DRBD > /etc/drbd.conf"
+		i=0
+		for drbd in drbd_devices:
+			resource=drbd[0]
+			disk=drbd[1]
+			drbd_number=i
+			i+=1
+			print """
+resource %s {
+	protocol C;
+	net { 
+		allow-two-primaries;
+	 	after-sb-0pri discard-least-changes;
+	  	after-sb-1pri call-pri-lost-after-sb;
+	   	after-sb-2pri call-pri-lost-after-sb;
+	}
+	syncer { 
+		rate 5M; 
+	}
+	on %s 
+	{
+		device /dev/drbd%s;
+  		disk %s;
+		address %s:%s;
+	    meta-disk %s[%s];
+	}
+	on %s 
+	{
+		device /dev/drbd%s;
+  		disk %s;
+		address %s:%s;
+	    meta-disk %s[%s];
+	}
+}
+
+""" % (resource, node1, drbd_number, disk, node1_ip, i+drbd_base_port, meta_disk, drbd_number, node2, drbd_number, disk, node2_ip, i+drbd_base_port, meta_disk, drbd_number )
+		print "DRBD"
+
+
+def make_drbd_links():
+	make_lvm(0)
+	print "mkdir -p /dev/drbd"
+	i=0
+	for drbd in drbd_devices:
+		drbd_number=i
+		i+=1
+		resource=drbd[0]
+		disk=drbd[1]
+		print "ln -sf /dev/drbd%s /dev/drbd/%s"	%(drbd_number, resource)
+
+def make_fs():
+	for dom in domains:
+		print "mkfs.ext3 /dev/drbd/"+dom
+
+
+def make_mount():
+	print "mkdir -p /domU"
+	for dom in domains:
+		print "mkdir -p /domU/%s" % (dom)
+		print "mount /dev/drbd/%s /domU/%s" % (dom,dom)
+
+def make_umount():
+	for dom in domains:
+		print "umount /domU/%s" % (dom)
+
+def make_dns():
+	i=1
+	for dom in domains:
+		print "%s A %s.%s" % (dom, ip_network, i)
+		i+=1
+
+def make_dns_reverse():
+	i=1
+	for dom in domains:
+		print "%s A %s.%s." % (i, dom, domain_name)
+		i+=1
+
+def make_install_debian():
+	print """
+debootstrap %s /domU/%s %s
+chroot /domU/%s apt-get install -y --force-yes %s
+	""" % (debian_release,domains[0],debian_mirror,domains[0],apt_get_install)
+
+def make_rsync():
+	for dom in domains[1:]:
+		print """
+rsync -a /domU/%s/ /domU/%s/
+		""" % (domains[0], dom)
+
+def make_etcfstab():
+	i=0
+	for dom in domains:
+		i+=1
+		print """
+cat <<FSTAB > /domU/%s/etc/fstab
+proc                /proc           proc    defaults                    0       0
+/dev/hda1           /               ext3    defaults,errors=remount-ro  0       1
+FSTAB
+		""" % (dom)
+
+def make_etcnetworkinterfaces():
+	i=0
+	for dom in domains:
+		i+=1
+		print """
+cat <<INTERFACES > /domU/%s/etc/network/interfaces
+auto lo eth0
+iface lo inet loopback
+
+iface eth0 inet static
+    address %s.%s
+    netmask 255.255.255.0
+    network %s.0
+    broadcast %s.255
+    gateway %s
+    dns-nameservers %s
+    dns-search %s
+INTERFACES
+		""" % (dom,ip_network,i,ip_network, ip_network, ip_gateway, domain_name, ip_nameserver)
+
+def make_etcresolvconf():
+	for dom in domains:
+		print """
+cat <<RESOLVCONF > /domU/%s/etc/resolv.conf
+search %s
+nameserver %s
+RESOLVCONF
+		""" % (dom,domain_name,ip_nameserver)
+
+def make_etchostname():
+	for dom in domains:
+		print """
+cat <<HOSTNAME > /domU/%s/etc/hostname
+%s
+HOSTNAME
+		""" % (dom,dom)
+
+
+def make_etchosts():
+	i=0
+	for dom in domains:
+		i+=1
+		print """
+cat <<HOSTS > /domU/%s/etc/hosts
+127.0.0.1       localhost
+192.168.1.%s   %s.%s  %s
+
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
+HOSTS
+		""" % (dom,i,dom,domain_name,dom)
+
+def make_rootssh():
+	for dom in domains:
+		print """
+mkdir -p /domU/%s/root/.ssh/
+cp ~/.ssh/id_dsa.pub /domU/%s/root/.ssh/authorized_keys
+chmod 600 /domU/%s/root/.ssh/authorized_keys
+		"""  % (dom,dom,dom)
+
+def make_l3rc():
+	for dom in domains:
+		print """
+		cat <<EOF > /domU/%s/root/.l3rc
+l3cd=/users/igor/xen-drbd-dom0-setup/%s.%s/root
+EOF
+		"""  % (dom,dom,domain_name)
+
+
+def make_etc():
+		make_etcfstab()
+		make_etcnetworkinterfaces()
+		make_etcresolvconf()
+		make_etchosts()
+		make_etchostname()
+		make_rootssh()
+		make_l3rc()
+
+def make_all_system():
+	make_drbd_links()
+	make_fs()
+	make_mount()
+	make_install_debian()
+	make_rsync()
+	make_etc()
+	make_umount()
+
+def get_management_ip():
+	return management_ip
+
+def get_default_gateway():
+	return management_gw
+
+def make_bridges():
+	ip=get_management_ip()
+	gw=get_default_gateway()
+	print "ifconfig %s 0.0.0.0" % (trunk)
+	for bridge in bridges:
+		vlan=vlans[bridges.index(bridge)]
+		print "vconfig add %s %s" % (trunk,vlan)
+		print "/etc/xen/scripts/network-bridge start vifnum=%s bridge=%s netdev=%s.%s" % (bridges.index(bridge)+2,bridge,trunk,vlan)
+	print "ifconfig %s.%s %s" % (trunk,management_vlan,management_ip)
+	if management_gw:
+			print "route add default gw %s" % (management_gw)
+
+
+def show_usage():
+	print """
+Usage:
+	xen-drbd-install <network> <command>  			(to view)
+	xen-drbd-install <network> <command> | sh -s 	(to run)
+
+	<network> is a name of the file, which contains network description
+
+Commands:
+	make-all
+	make-bridges
+	make-links
+"""
+
+#make_all_system()
+
+if len(sys.argv) > 1:
+	command = sys.argv[2]
+	if command == 'make-all':
+		make_all_system()
+	if command == 'make-bridges':	
+		make_bridges()
+	elif command == 'make-links':	
+		make_drbd_links()
+	else:
+		show_usage()
+else:
+	show_usage()
+
diff -r 000000000000 -r b6dc3480caae xen-drbd-start.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xen-drbd-start.py	Thu Sep 27 18:56:29 2007 +0300
@@ -0,0 +1,51 @@
+#!/usr/bin/python
+
+
+# External variables:
+# * network
+# * domain
+
+import sys
+
+sys.path.append('/root')
+try:
+	exec 'from %s import *' % (network)
+except:
+	print "Can't find or interpret module %s with topology description" %(network)
+	sys.exit(1)
+
+name=domain
+N = domains.index(domain)
+
+
+memory=mem_table[domain]
+
+disk=[]
+i=0
+for disk_description in disk_table[domain]:
+	i+=1
+	if disk_description.find(":") == -1:
+		disk.append('phy:/dev/drbd/%s,hda%s,w' % (domain,i) )
+	else:
+		disk.append('phy:/dev/drbd/%s,hda%s,w' % ((disk_description.split(':'))[0],i) )
+
+vif=[]
+vbridges = vbridges_table[domain]
+x=1
+for i in vbridges:
+ vif.append('bridge='+i+',mac=00:16:3e:01:'+hex(int(N))[2:]+':'+hex(int('c0',16)+x)[2:])
+ x+=1
+
+root="/dev/hda1 ro"
+extra=""
+
+def print_config():
+    print "name =", name
+    print "kernel =", kernel
+    print "ramdisk =", ramdisk
+    print "memory =", memory
+    print "disk =", disk
+    print "vif =", vif
+    print "root =", root
+    print "extra =", extra
+
diff -r 000000000000 -r b6dc3480caae xen-drbd.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xen-drbd.py	Thu Sep 27 18:56:29 2007 +0300
@@ -0,0 +1,238 @@
+#!/usr/bin/python
+
+network='eb'
+
+import sys,os
+from commands import mkarg
+
+sys.path.append('/etc/xen')
+try:
+        exec 'from %s import *' % (network)
+except:
+        print "Can't find or interpret module %s with topology description" %(network)
+        sys.exit(1)
+
+domain_create_line="xm create xen-drbd-start network="+network+" domain=%s"
+
+def the_peer_of(node):
+	if node == node1:
+		another_node=node2
+	else:
+		another_node=node1
+	return another_node
+
+he_is=the_peer_of(i_am)
+
+def log_error(error):
+	print error
+
+def run_now(command,node=i_am):
+	if node == i_am:
+		line=command+" > /dev/stderr"
+	else:
+		line="ssh %s %s < /dev/null > /dev/stderr"  % (node,mkarg(command))
+	(p, child_stdout, child_stderr) = os.popen3(line)
+	output = child_stderr.read()
+	#p = os.popen(line)
+	#output = p.read()
+	p.close()
+	return output
+
+def run(command,node=i_am):
+	run_now(command,node)
+#	if node == i_am:
+#		print command
+#	else:
+#		print "ssh %s %s < /dev/null > /dev/stderr" % (node,mkarg(command))
+
+
+def get_drbd_resources(domain):
+	disk=[]
+	for disk_description in disk_table[domain]:
+		if disk_description.find(":") == -1:
+			disk.append(domain)
+		else:
+			disk.append((disk_description.split(':'))[0])
+	return disk
+	
+
+def set_drbd_primary(domain, node=i_am):
+	drbd_resources=get_drbd_resources(domain)
+	for drbd in drbd_resources:
+		run("drbdadm primary %s"%(drbd),node)
+
+def set_drbd_secondary(domain, node=i_am):
+	drbd_resources=get_drbd_resources(domain)
+	for drbd in drbd_resources:
+		run("drbdadm secondary %s"%(drbd),node)
+
+def get_domain_id(domain,node=i_am):
+	"""
+	Returns domain id of the <domain> or -1 if the <domain> is not running on the <node>
+	"""
+	res=run_now("xm list | awk '{if ($1 == \"'%s'\") print $2}'" % domain, node).rstrip("\n")
+	if not res:
+		res = -1
+	else:
+		res = int(res)
+	return res
+
+def get_drbd_id(resource,node=i_am):
+	res=run_now("ls -l /dev/drbd/%s 2> /dev/null | awk '{print $10}' | sed s@/dev/drbd@@" %resource, node).rstrip("\n")
+	if not res:
+		res = -1
+	else:
+		res = int(res)
+	return res
+
+def get_drbd_state(resource,node=i_am):
+	res=run_now("drbdadm state %s | sed s@/.*@@" %resource, node).rstrip("\n")
+	if not res:
+		res = -1
+	return res
+
+def get_drbd_cstate(resource,node=i_am):
+	res=run_now("drbdadm cstate %s " %resource, node).rstrip("\n")
+	if not res:
+		res = -1
+	return res
+
+
+def start_domain(domain,node=i_am):
+	if (get_domain_id(domain,i_am) != -1):
+		log_error("Domain %s is running already on the node %s" % (domain,i_am))
+		return -1
+	if (get_domain_id(domain,he_is) != -1):
+		log_error("Domain %s is running already on the node %s" % (domain,he_is))
+		return -1
+	another_node=the_peer_of(node)
+	set_drbd_secondary(domain,another_node)
+	set_drbd_primary(domain,node)
+	run(domain_create_line % domain)
+
+def migrate_domain_out(domain,node=i_am):
+	if (get_domain_id(domain,node) == -1):
+		log_error("Domain %s is not running on the node %s" % (domain,node))
+		return -1
+	another_node=the_peer_of(node)
+	print "Migrating the domain <%s> from the node <%s> to the node <%s>" % (domain, node, another_node)
+	set_drbd_primary(domain,another_node)
+	run("xm migrate %s %s --live" % (domain,another_node),node)
+	run("sleep 2")
+	set_drbd_secondary(domain,node)
+	print "+ Done"
+	
+def migrate_domain_in(domain,node=i_am):
+	migrate_domain_out(domain,the_peer_of(node))
+
+def migrate_domain(domain,node):
+	migrate_domain_in(domain,node)
+
+def running_domains(node=i_am):
+	xm_domains=run_now("xm list | awk '{print $1}'", node).split("\n")
+	return filter(lambda x: x in xm_domains, domains)
+
+def migrate_all_out(node=i_am):
+	for domain in running_domains(node):
+		migrate_domain_out(domain,node)
+
+def migrate_all_in(node=i_am):
+	for domain in running_domains(the_peer_of(node)):
+		migrate_domain_in(domain,node)
+
+def start_all(node=i_am):
+	for domain in domains:
+		if not domain in running_domains(node) and not domain in running_domains(the_peer_of(node)):
+			start_domain(domain,node)
+
+def start_my_domains(node=i_am):
+	for domain in domain_home[node]:
+		if not domain in running_domains(node) and not domain in running_domains(the_peer_of(node)):
+			start_domain(domain,node)
+
+def migrate_my_domains_home(node=i_am):
+	for domain in domain_home[node]:
+		if not domain in running_domains(node) and domain in running_domains(the_peer_of(node)):
+			migrate_domain_in(domain,node)
+	
+def migrate_and_start_all(node=i_am):
+	migrate_my_domains_home(node)
+	start_my_domains(node)
+
+def show_usage():
+	print """
+Usage:
+	xen-drbd command [domain]
+
+Commands:
+	start domain
+	start-all
+	start-my-domains
+
+	migrate-out domain
+	migrate-in domain
+	migrate-all-out
+	migrate-all-in
+	migrate-my-domains-home
+
+	migrate-and-start-all
+	"""
+
+def test():
+	print "get_drbd_resources(samba)=",get_drbd_resources("samba")
+	print "get_domain_id(Domain-0)=",get_domain_id("Domain-0")
+	print "get_domain_id(samba)=",get_domain_id("samba")
+	print "get_drbd_id(samba)=",get_drbd_id("samba")
+	print "get_drbd_id(samba, he_is)=",get_drbd_id("samba",he_is)
+	print "get_drbd_id(unknown_resource, he_is)=",get_drbd_id("unknown_resource",he_is)
+	print "get_drbd_state(samba, he_is)=",get_drbd_state("samba")
+	print "get_drbd_state(samba, he_is)=",get_drbd_state("samba",he_is)
+	print "get_drbd_cstate(samba)=",get_drbd_cstate("samba")
+	print "get_drbd_cstate(samba, he_is)=",get_drbd_cstate("samba",he_is)
+	print "start_domain(samba)"
+	start_domain("samba")
+	print "migrate_domain_out(samba)"
+	migrate_domain_in("samba")
+
+
+#print "get_domain_id(samba,node2)=",get_domain_id("samba",node2)
+#sys.exit(0)
+
+if len(sys.argv) == 1:
+	show_usage()
+	sys.exit(0)
+
+command=sys.argv[1]
+if len(sys.argv) == 3:
+	domain=sys.argv[2]
+	if command == 'start':
+		start_domain(domain)
+	elif command == 'migrate-out':
+		migrate_domain_out(domain)
+	elif command == 'migrate-in':
+		migrate_domain_in(domain)
+	else:
+		show_usage()
+		sys.exit(0)
+elif len(sys.argv) == 2:
+	if command == 'start-all':
+		start_all()
+	elif command == 'start-my-domains':
+		start_my_domains()
+	elif command == 'migrate-all-out':
+		migrate_all_out()
+	elif command == 'migrate-all-in':
+		migrate_all_in()
+	elif command == 'migrate-my-domains-home':
+		migrate_my_domains_home()
+	elif command == 'migrate-and-start-all':
+		migrate_and_start_all()
+	elif command == 'list':
+		print running_domains()
+	else:
+		show_usage()
+		sys.exit(0)
+
+
+
+
diff -r 000000000000 -r b6dc3480caae xen-scripts-network-xen-drbd
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xen-scripts-network-xen-drbd	Thu Sep 27 18:56:29 2007 +0300
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+XEN_DRBD_PATH='/usr/bin'
+TOPOLOGY_NAME='xen-drbd'
+[ -e /etc/default/xen-drbd ] && . /etc/default/xen-drbd
+
+case $1 in
+		start)
+			$XEN_DRBD_PATH/xen-drbd-install.py ${TOPOLOGY_NAME} make-bridges | sh -s
+		;;
+		stop)
+		;;
+		*)
+			echo $0 'start|stop'
+		;;
+esac
+