func decodeUserData(userData string) ([]byte, error) {
	data, err := base64.StdEncoding.DecodeString(userData)
	if err != nil {
		return []byte(""), err
	}
	return utils.Gunzip(data)
}

func (c *environClient) generateSigmaComponents(baseName string, constraints *sigmaConstraints, args environs.StartInstanceParams, drv gosigma.Drive, userData []byte) (cc gosigma.Components, err error) {
	cc.SetName(baseName)
	cc.SetDescription(baseName)
	cc.SetSMP(constraints.cores)
	cc.SetCPU(constraints.power)
	cc.SetMem(constraints.mem)

	vncpass, err := utils.RandomPassword()
	if err != nil {
		err = errors.Errorf("error generating password: %v", err)
		return
	}
	cc.SetVNCPassword(vncpass)
	logger.Debugf("Setting ssh key: %s end", c.config.AuthorizedKeys())
	cc.SetSSHPublicKey(c.config.AuthorizedKeys())
	cc.AttachDrive(1, "0:0", "virtio", drv.UUID())
	cc.NetworkDHCP4(gosigma.ModelVirtio)

	if multiwatcher.AnyJobNeedsState(args.InstanceConfig.Jobs...) {
		cc.SetMeta(jujuMetaInstance, jujuMetaInstanceStateServer)
	} else {
		cc.SetMeta(jujuMetaInstance, jujuMetaInstanceServer)
	}

	cc.SetMeta(jujuMetaEnvironment, c.uuid)
	data, err := utils.Gunzip(userData)
	if err != nil {
		return cc, errors.Trace(err)
	}
	cc.SetMeta(jujuMetaCoudInit, base64.StdEncoding.EncodeToString(data))
	cc.SetMeta(jujuMetaBase64, jujuMetaCoudInit)

	return cc, nil
}

func (*utilsSuite) TestCompression(c *gc.C) {
	data := []byte(strings.Repeat("some data to be compressed\n", 100))
	compressedData := []byte{
		0x1f, 0x8b, 0x08, 0x00, 0x33, 0xb5, 0xf6, 0x50,
		0x00, 0x03, 0xed, 0xc9, 0xb1, 0x0d, 0x00, 0x20,
		0x08, 0x45, 0xc1, 0xde, 0x29, 0x58, 0x0d, 0xe5,
		0x97, 0x04, 0x23, 0xee, 0x1f, 0xa7, 0xb0, 0x7b,
		0xd7, 0x5e, 0x57, 0xca, 0xc2, 0xaf, 0xdb, 0x2d,
		0x9b, 0xb2, 0x55, 0xb9, 0x8f, 0xba, 0x15, 0xa3,
		0x29, 0x8a, 0xa2, 0x28, 0x8a, 0xa2, 0x28, 0xea,
		0x67, 0x3d, 0x71, 0x71, 0x6e, 0xbf, 0x8c, 0x0a,
		0x00, 0x00,
	}
	cdata := utils.Gzip(data)
	c.Assert(len(cdata) < len(data), gc.Equals, true)
	data1, err := utils.Gunzip(cdata)
	c.Assert(err, gc.IsNil)
	c.Assert(data1, gc.DeepEquals, data)

	data1, err = utils.Gunzip(compressedData)
	c.Assert(err, gc.IsNil)
	c.Assert(data1, gc.DeepEquals, data)
}

func (t *localServerSuite) TestBootstrapInstanceUserDataAndState(c *gc.C) {
	env := t.Prepare(c)
	err := bootstrap.Bootstrap(envtesting.BootstrapContext(c), env, bootstrap.BootstrapParams{})
	c.Assert(err, jc.ErrorIsNil)

	// check that StateServerInstances returns the id of the bootstrap machine.
	instanceIds, err := env.StateServerInstances()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(instanceIds, gc.HasLen, 1)

	insts, err := env.AllInstances()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(insts, gc.HasLen, 1)
	c.Check(insts[0].Id(), gc.Equals, instanceIds[0])

	// check that the user data is configured to start zookeeper
	// and the machine and provisioning agents.
	// check that the user data is configured to only configure
	// authorized SSH keys and set the log output; everything
	// else happens after the machine is brought up.
	inst := t.srv.ec2srv.Instance(string(insts[0].Id()))
	c.Assert(inst, gc.NotNil)
	addresses, err := insts[0].Addresses()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(addresses, gc.Not(gc.HasLen), 0)
	userData, err := utils.Gunzip(inst.UserData)
	c.Assert(err, jc.ErrorIsNil)
	c.Logf("first instance: UserData: %q", userData)
	var userDataMap map[interface{}]interface{}
	err = goyaml.Unmarshal(userData, &userDataMap)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(userDataMap, jc.DeepEquals, map[interface{}]interface{}{
		"output": map[interface{}]interface{}{
			"all": "| tee -a /var/log/cloud-init-output.log",
		},
		"ssh_authorized_keys": splitAuthKeys(env.Config().AuthorizedKeys()),
		"runcmd": []interface{}{
			"set -xe",
			"install -D -m 644 /dev/null '/etc/init/juju-clean-shutdown.conf'",
			"printf '%s\\n' '\nauthor \"Juju Team <[email protected]>\"\ndescription \"Stop all network interfaces on shutdown\"\nstart on runlevel [016]\ntask\nconsole output\n\nexec /sbin/ifdown -a -v --force\n' > '/etc/init/juju-clean-shutdown.conf'",
			"install -D -m 644 /dev/null '/var/lib/juju/nonce.txt'",
			"printf '%s\\n' 'user-admin:bootstrap' > '/var/lib/juju/nonce.txt'",
		},
	})

	// check that a new instance will be started with a machine agent
	inst1, hc := testing.AssertStartInstance(c, env, "1")
	c.Check(*hc.Arch, gc.Equals, "amd64")
	c.Check(*hc.Mem, gc.Equals, uint64(1740))
	c.Check(*hc.CpuCores, gc.Equals, uint64(1))
	c.Assert(*hc.CpuPower, gc.Equals, uint64(100))
	inst = t.srv.ec2srv.Instance(string(inst1.Id()))
	c.Assert(inst, gc.NotNil)
	userData, err = utils.Gunzip(inst.UserData)
	c.Assert(err, jc.ErrorIsNil)
	c.Logf("second instance: UserData: %q", userData)
	userDataMap = nil
	err = goyaml.Unmarshal(userData, &userDataMap)
	c.Assert(err, jc.ErrorIsNil)
	CheckPackage(c, userDataMap, "curl", true)
	CheckPackage(c, userDataMap, "mongodb-server", false)
	CheckScripts(c, userDataMap, "jujud bootstrap-state", false)
	CheckScripts(c, userDataMap, "/var/lib/juju/agents/machine-1/agent.conf", true)
	// TODO check for provisioning agent

	err = env.Destroy()
	c.Assert(err, jc.ErrorIsNil)

	_, err = env.StateServerInstances()
	c.Assert(err, gc.Equals, environs.ErrNotBootstrapped)
}

func (*CloudInitSuite) testUserData(c *gc.C, bootstrap bool) {
	testJujuHome := c.MkDir()
	defer osenv.SetJujuHome(osenv.SetJujuHome(testJujuHome))
	tools := &tools.Tools{
		URL:     "http://foo.com/tools/releases/juju1.2.3-linux-amd64.tgz",
		Version: version.MustParseBinary("1.2.3-linux-amd64"),
	}
	envConfig, err := config.New(config.NoDefaults, dummySampleConfig())
	c.Assert(err, gc.IsNil)

	allJobs := []params.MachineJob{
		params.JobManageEnviron,
		params.JobHostUnits,
	}
	cfg := &cloudinit.MachineConfig{
		MachineId:    "10",
		MachineNonce: "5432",
		Tools:        tools,
		StateInfo: &state.Info{
			Info: mongo.Info{
				Addrs:  []string{"127.0.0.1:1234"},
				CACert: "CA CERT\n" + testing.CACert,
			},
			Password: "pw1",
			Tag:      "machine-10",
		},
		APIInfo: &api.Info{
			Addrs:    []string{"127.0.0.1:1234"},
			Password: "pw2",
			CACert:   "CA CERT\n" + testing.CACert,
			Tag:      "machine-10",
		},
		DataDir:                 environs.DataDir,
		LogDir:                  agent.DefaultLogDir,
		Jobs:                    allJobs,
		CloudInitOutputLog:      environs.CloudInitOutputLog,
		Config:                  envConfig,
		AgentEnvironment:        map[string]string{agent.ProviderType: "dummy"},
		AuthorizedKeys:          "wheredidileavemykeys",
		MachineAgentServiceName: "jujud-machine-10",
	}
	if bootstrap {
		cfg.Bootstrap = true
		cfg.StateServingInfo = &params.StateServingInfo{
			StatePort:  envConfig.StatePort(),
			APIPort:    envConfig.APIPort(),
			Cert:       testing.ServerCert,
			PrivateKey: testing.ServerKey,
		}
	}
	script1 := "script1"
	script2 := "script2"
	cloudcfg := coreCloudinit.New()
	cloudcfg.AddRunCmd(script1)
	cloudcfg.AddRunCmd(script2)
	result, err := environs.ComposeUserData(cfg, cloudcfg)
	c.Assert(err, gc.IsNil)

	unzipped, err := utils.Gunzip(result)
	c.Assert(err, gc.IsNil)

	config := make(map[interface{}]interface{})
	err = goyaml.Unmarshal(unzipped, &config)
	c.Assert(err, gc.IsNil)

	// The scripts given to userData where added as the first
	// commands to be run.
	runCmd := config["runcmd"].([]interface{})
	c.Check(runCmd[0], gc.Equals, script1)
	c.Check(runCmd[1], gc.Equals, script2)

	if bootstrap {
		// The cloudinit config should have nothing but the basics:
		// SSH authorized keys, the additional runcmds, and log output.
		//
		// Note: the additional runcmds *do* belong here, at least
		// for MAAS. MAAS needs to configure and then bounce the
		// network interfaces, which would sever the SSH connection
		// in the synchronous bootstrap phase.
		c.Check(config, gc.DeepEquals, map[interface{}]interface{}{
			"output": map[interface{}]interface{}{
				"all": "| tee -a /var/log/cloud-init-output.log",
			},
			"runcmd": []interface{}{
				"script1", "script2",
				"set -xe",
				"install -D -m 644 /dev/null '/var/lib/juju/nonce.txt'",
				"printf '%s\\n' '5432' > '/var/lib/juju/nonce.txt'",
			},
			"ssh_authorized_keys": []interface{}{"wheredidileavemykeys"},
		})
	} else {
		// Just check that the cloudinit config looks good,
		// and that there are more runcmds than the additional
		// ones we passed into ComposeUserData.
		c.Check(config["apt_upgrade"], gc.Equals, true)
		c.Check(len(runCmd) > 2, jc.IsTrue)
	}
}

func (*CloudInitSuite) testUserData(c *gc.C, series string, bootstrap bool) {
	testJujuHome := c.MkDir()
	defer osenv.SetJujuHome(osenv.SetJujuHome(testJujuHome))
	// Use actual series paths instead of local defaults
	logDir := must(paths.LogDir(series))
	metricsSpoolDir := must(paths.MetricsSpoolDir(series))
	dataDir := must(paths.DataDir(series))
	tools := &tools.Tools{
		URL:     "http://tools.testing/tools/released/juju.tgz",
		Version: version.Binary{version.MustParse("1.2.3"), "quantal", "amd64"},
	}
	envConfig, err := config.New(config.NoDefaults, dummySampleConfig())
	c.Assert(err, jc.ErrorIsNil)

	allJobs := []multiwatcher.MachineJob{
		multiwatcher.JobManageModel,
		multiwatcher.JobHostUnits,
		multiwatcher.JobManageNetworking,
	}
	cfg := &instancecfg.InstanceConfig{
		MachineId:    "10",
		MachineNonce: "5432",
		Tools:        tools,
		Series:       series,
		MongoInfo: &mongo.MongoInfo{
			Info: mongo.Info{
				Addrs:  []string{"127.0.0.1:1234"},
				CACert: "CA CERT\n" + testing.CACert,
			},
			Password: "pw1",
			Tag:      names.NewMachineTag("10"),
		},
		APIInfo: &api.Info{
			Addrs:    []string{"127.0.0.1:1234"},
			Password: "pw2",
			CACert:   "CA CERT\n" + testing.CACert,
			Tag:      names.NewMachineTag("10"),
			ModelTag: testing.ModelTag,
		},
		DataDir:                 dataDir,
		LogDir:                  path.Join(logDir, "juju"),
		MetricsSpoolDir:         metricsSpoolDir,
		Jobs:                    allJobs,
		CloudInitOutputLog:      path.Join(logDir, "cloud-init-output.log"),
		Config:                  envConfig,
		AgentEnvironment:        map[string]string{agent.ProviderType: "dummy"},
		AuthorizedKeys:          "wheredidileavemykeys",
		MachineAgentServiceName: "jujud-machine-10",
		EnableOSUpgrade:         true,
	}
	if bootstrap {
		cfg.Bootstrap = true
		cfg.StateServingInfo = &params.StateServingInfo{
			StatePort:    envConfig.StatePort(),
			APIPort:      envConfig.APIPort(),
			Cert:         testing.ServerCert,
			PrivateKey:   testing.ServerKey,
			CAPrivateKey: testing.CAKey,
		}
	}
	script1 := "script1"
	script2 := "script2"
	cloudcfg, err := cloudinit.New(series)
	c.Assert(err, jc.ErrorIsNil)
	cloudcfg.AddRunCmd(script1)
	cloudcfg.AddRunCmd(script2)
	result, err := providerinit.ComposeUserData(cfg, cloudcfg, &openstack.OpenstackRenderer{})
	c.Assert(err, jc.ErrorIsNil)

	unzipped, err := utils.Gunzip(result)
	c.Assert(err, jc.ErrorIsNil)

	config := make(map[interface{}]interface{})
	err = goyaml.Unmarshal(unzipped, &config)
	c.Assert(err, jc.ErrorIsNil)

	// The scripts given to userData where added as the first
	// commands to be run.
	runCmd := config["runcmd"].([]interface{})
	c.Check(runCmd[0], gc.Equals, script1)
	c.Check(runCmd[1], gc.Equals, script2)

	if bootstrap {
		// The cloudinit config should have nothing but the basics:
		// SSH authorized keys, the additional runcmds, and log output.
		//
		// Note: the additional runcmds *do* belong here, at least
		// for MAAS. MAAS needs to configure and then bounce the
		// network interfaces, which would sever the SSH connection
		// in the synchronous bootstrap phase.
		expected := map[interface{}]interface{}{
			"output": map[interface{}]interface{}{
				"all": "| tee -a /var/log/cloud-init-output.log",
			},
			"runcmd": []interface{}{
				"script1", "script2",
				"set -xe",
				"install -D -m 644 /dev/null '/etc/init/juju-clean-shutdown.conf'",
				"printf '%s\\n' '\nauthor \"Juju Team <[email protected]>\"\ndescription \"Stop all network interfaces on shutdown\"\nstart on runlevel [016]\ntask\nconsole output\n\nexec /sbin/ifdown -a -v --force\n' > '/etc/init/juju-clean-shutdown.conf'",
				"install -D -m 644 /dev/null '/var/lib/juju/nonce.txt'",
//.........这里部分代码省略.........

func (t *localServerSuite) TestBootstrapInstanceUserDataAndState(c *gc.C) {
	env := t.Prepare(c)
	envtesting.UploadFakeTools(c, env.Storage())
	err := bootstrap.Bootstrap(coretesting.Context(c), env, environs.BootstrapParams{})
	c.Assert(err, gc.IsNil)

	// check that the state holds the id of the bootstrap machine.
	bootstrapState, err := bootstrap.LoadState(env.Storage())
	c.Assert(err, gc.IsNil)
	c.Assert(bootstrapState.StateInstances, gc.HasLen, 1)

	insts, err := env.AllInstances()
	c.Assert(err, gc.IsNil)
	c.Assert(insts, gc.HasLen, 1)
	c.Check(insts[0].Id(), gc.Equals, bootstrapState.StateInstances[0])

	// check that the user data is configured to start zookeeper
	// and the machine and provisioning agents.
	// check that the user data is configured to only configure
	// authorized SSH keys and set the log output; everything
	// else happens after the machine is brought up.
	inst := t.srv.ec2srv.Instance(string(insts[0].Id()))
	c.Assert(inst, gc.NotNil)
	addresses, err := insts[0].Addresses()
	c.Assert(err, gc.IsNil)
	c.Assert(addresses, gc.Not(gc.HasLen), 0)
	userData, err := utils.Gunzip(inst.UserData)
	c.Assert(err, gc.IsNil)
	c.Logf("first instance: UserData: %q", userData)
	var userDataMap map[interface{}]interface{}
	err = goyaml.Unmarshal(userData, &userDataMap)
	c.Assert(err, gc.IsNil)
	c.Assert(userDataMap, jc.DeepEquals, map[interface{}]interface{}{
		"output": map[interface{}]interface{}{
			"all": "| tee -a /var/log/cloud-init-output.log",
		},
		"ssh_authorized_keys": splitAuthKeys(env.Config().AuthorizedKeys()),
		"runcmd": []interface{}{
			"set -xe",
			"install -D -m 644 /dev/null '/var/lib/juju/nonce.txt'",
			"printf '%s\\n' 'user-admin:bootstrap' > '/var/lib/juju/nonce.txt'",
		},
	})

	// check that a new instance will be started with a machine agent
	inst1, hc := testing.AssertStartInstance(c, env, "1")
	c.Check(*hc.Arch, gc.Equals, "amd64")
	c.Check(*hc.Mem, gc.Equals, uint64(1740))
	c.Check(*hc.CpuCores, gc.Equals, uint64(1))
	c.Assert(*hc.CpuPower, gc.Equals, uint64(100))
	inst = t.srv.ec2srv.Instance(string(inst1.Id()))
	c.Assert(inst, gc.NotNil)
	userData, err = utils.Gunzip(inst.UserData)
	c.Assert(err, gc.IsNil)
	c.Logf("second instance: UserData: %q", userData)
	userDataMap = nil
	err = goyaml.Unmarshal(userData, &userDataMap)
	c.Assert(err, gc.IsNil)
	CheckPackage(c, userDataMap, "git", true)
	CheckPackage(c, userDataMap, "mongodb-server", false)
	CheckScripts(c, userDataMap, "jujud bootstrap-state", false)
	CheckScripts(c, userDataMap, "/var/lib/juju/agents/machine-1/agent.conf", true)
	// TODO check for provisioning agent

	err = env.Destroy()
	c.Assert(err, gc.IsNil)

	_, err = bootstrap.LoadState(env.Storage())
	c.Assert(err, gc.NotNil)
}

// newRawInstance is where the new physical instance is actually
// provisioned, relative to the provided args and spec. Info for that
// low-level instance is returned.
func (env *environ) newRawInstance(args environs.StartInstanceParams, img *OvaFileMetadata) (*mo.VirtualMachine, *instance.HardwareCharacteristics, error) {
	machineID := common.MachineFullName(env, args.InstanceConfig.MachineId)

	cloudcfg, err := cloudinit.New(args.Tools.OneSeries())
	if err != nil {
		return nil, nil, errors.Trace(err)
	}
	cloudcfg.AddPackage("open-vm-tools")
	cloudcfg.AddPackage("iptables-persistent")
	userData, err := providerinit.ComposeUserData(args.InstanceConfig, cloudcfg)
	if err != nil {
		return nil, nil, errors.Annotate(err, "cannot make user data")
	}
	userData, err = utils.Gunzip(userData)
	if err != nil {
		return nil, nil, errors.Trace(err)
	}
	logger.Debugf("Vmware user data; %d bytes", len(userData))

	rootDisk := common.MinRootDiskSizeGiB * 1024
	if args.Constraints.RootDisk != nil && *args.Constraints.RootDisk > rootDisk {
		rootDisk = *args.Constraints.RootDisk
	}
	cpuCores := DefaultCpuCores
	if args.Constraints.CpuCores != nil {
		cpuCores = *args.Constraints.CpuCores
	}
	cpuPower := DefaultCpuPower
	if args.Constraints.CpuPower != nil {
		cpuPower = *args.Constraints.CpuPower
	}
	mem := DefaultMemMb
	if args.Constraints.Mem != nil {
		mem = *args.Constraints.Mem
	}

	hwc := &instance.HardwareCharacteristics{
		Arch:     &img.Arch,
		Mem:      &mem,
		CpuCores: &cpuCores,
		CpuPower: &cpuPower,
		RootDisk: &rootDisk,
	}
	zones, err := env.parseAvailabilityZones(args)
	if err != nil {
		return nil, nil, errors.Trace(err)
	}
	var inst *mo.VirtualMachine
	for _, zone := range zones {
		var availZone *vmwareAvailZone
		availZone, err = env.availZone(zone)
		if err != nil {
			logger.Warningf("Error while getting availability zone %s: %s", zone, err)
			continue
		}
		apiPort := 0
		if isStateServer(args.InstanceConfig) {
			apiPort = args.InstanceConfig.StateServingInfo.APIPort
		}
		spec := &instanceSpec{
			machineID: machineID,
			zone:      availZone,
			hwc:       hwc,
			img:       img,
			userData:  userData,
			sshKey:    args.InstanceConfig.AuthorizedKeys,
			isState:   isStateServer(args.InstanceConfig),
			apiPort:   apiPort,
		}
		inst, err = env.client.CreateInstance(env.ecfg, spec)
		if err != nil {
			logger.Warningf("Error while trying to create instance in %s availability zone: %s", zone, err)
			continue
		}
		break
	}
	if err != nil {
		return nil, nil, errors.Annotate(err, "Can't create instance in any of availability zones, last error")
	}
	return inst, hwc, err
}

func (env *joyentEnviron) StartInstance(args environs.StartInstanceParams) (*environs.StartInstanceResult, error) {

	if args.InstanceConfig.HasNetworks() {
		return nil, errors.New("starting instances with networks is not supported yet")
	}

	series := args.Tools.OneSeries()
	arches := args.Tools.Arches()
	spec, err := env.FindInstanceSpec(&instances.InstanceConstraint{
		Region:      env.Ecfg().Region(),
		Series:      series,
		Arches:      arches,
		Constraints: args.Constraints,
	})
	if err != nil {
		return nil, err
	}
	tools, err := args.Tools.Match(tools.Filter{Arch: spec.Image.Arch})
	if err != nil {
		return nil, errors.Errorf("chosen architecture %v not present in %v", spec.Image.Arch, arches)
	}

	args.InstanceConfig.Tools = tools[0]

	if err := instancecfg.FinishInstanceConfig(args.InstanceConfig, env.Config()); err != nil {
		return nil, err
	}

	// This is a hack that ensures that instances can communicate over
	// the internal network. Joyent sometimes gives instances
	// different 10.x.x.x/21 networks and adding this route allows
	// them to talk despite this. See:
	// https://bugs.launchpad.net/juju-core/+bug/1401130
	cloudcfg, err := cloudinit.New(args.InstanceConfig.Series)
	if err != nil {
		return nil, errors.Annotate(err, "cannot create cloudinit template")
	}
	ifupScript := `
#!/bin/bash

# These guards help to ensure that this hack only runs if Joyent's
# internal network still works as it does at time of writing.
[ "$IFACE" == "eth1" ] || [ "$IFACE" == "--all" ] || exit 0
/sbin/ip -4 --oneline addr show dev eth1 | fgrep --quiet " inet 10." || exit 0

/sbin/ip route add 10.0.0.0/8 dev eth1
`[1:]
	cloudcfg.AddBootTextFile("/etc/network/if-up.d/joyent", ifupScript, 0755)

	userData, err := providerinit.ComposeUserData(args.InstanceConfig, cloudcfg)
	if err != nil {
		return nil, errors.Annotate(err, "cannot make user data")
	}

	// Unzipping as Joyent API expects it as string
	userData, err = utils.Gunzip(userData)
	if err != nil {
		return nil, errors.Annotate(err, "cannot make user data")
	}
	logger.Debugf("joyent user data: %d bytes", len(userData))

	var machine *cloudapi.Machine
	machine, err = env.compute.cloudapi.CreateMachine(cloudapi.CreateMachineOpts{
		//Name:	 env.machineFullName(machineConf.MachineId),
		Package:  spec.InstanceType.Name,
		Image:    spec.Image.Id,
		Metadata: map[string]string{"metadata.cloud-init:user-data": string(userData)},
		Tags:     map[string]string{"tag.group": "juju", "tag.env": env.Config().Name()},
	})
	if err != nil {
		return nil, errors.Annotate(err, "cannot create instances")
	}
	machineId := machine.Id

	logger.Infof("provisioning instance %q", machineId)

	machine, err = env.compute.cloudapi.GetMachine(machineId)
	if err != nil {
		return nil, errors.Annotate(err, "cannot start instances")
	}

	// wait for machine to start
	for !strings.EqualFold(machine.State, "running") {
		time.Sleep(1 * time.Second)

		machine, err = env.compute.cloudapi.GetMachine(machineId)
		if err != nil {
			return nil, errors.Annotate(err, "cannot start instances")
		}
	}

	logger.Infof("started instance %q", machineId)

	inst := &joyentInstance{
		machine: machine,
		env:     env,
	}

	if multiwatcher.AnyJobNeedsState(args.InstanceConfig.Jobs...) {
		if err := common.AddStateInstance(env.Storage(), inst.Id()); err != nil {
//.........这里部分代码省略.........