merge lbaasv2, portsbinding, volumes v2; remove 'rackspace' refs; update docs
diff --git a/openstack/blockstorage/v2/extensions/volumeactions/requests.go b/openstack/blockstorage/v2/extensions/volumeactions/requests.go
new file mode 100644
index 0000000..05a76f7
--- /dev/null
+++ b/openstack/blockstorage/v2/extensions/volumeactions/requests.go
@@ -0,0 +1,174 @@
+package volumeactions
+
+import (
+	"github.com/gophercloud/gophercloud"
+)
+
+// AttachOptsBuilder allows extensions to add additional parameters to the
+// Attach request.
+type AttachOptsBuilder interface {
+	ToVolumeAttachMap() (map[string]interface{}, error)
+}
+
+// AttachMode describes the attachment mode for volumes.
+type AttachMode string
+
+// These constants determine how a volume is attached
+const (
+	ReadOnly  AttachMode = "ro"
+	ReadWrite AttachMode = "rw"
+)
+
+// AttachOpts contains options for attaching a Volume.
+type AttachOpts struct {
+	// The mountpoint of this volume
+	MountPoint string `json:"mountpoint,omitempty"`
+	// The nova instance ID, can't set simultaneously with HostName
+	InstanceUUID string `json:"instance_uuid,omitempty"`
+	// The hostname of baremetal host, can't set simultaneously with InstanceUUID
+	HostName string `json:"host_name,omitempty"`
+	// Mount mode of this volume
+	Mode AttachMode `json:"mode,omitempty"`
+}
+
+// ToVolumeAttachMap assembles a request body based on the contents of a
+// AttachOpts.
+func (opts AttachOpts) ToVolumeAttachMap() (map[string]interface{}, error) {
+	return gophercloud.BuildRequestBody(opts, "os-attach")
+}
+
+// Attach will attach a volume based on the values in AttachOpts.
+func Attach(client *gophercloud.ServiceClient, id string, opts AttachOptsBuilder) (r AttachResult) {
+	b, err := opts.ToVolumeAttachMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+	_, r.Err = client.Post(attachURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{202},
+	})
+	return
+}
+
+// DetachOptsBuilder allows extensions to add additional parameters to the
+// Detach request.
+type DetachOptsBuilder interface {
+	ToVolumeDetachMap() (map[string]interface{}, error)
+}
+
+type DetachOpts struct {
+	AttachmentID string `json:"attachment_id,omitempty"`
+}
+
+// ToVolumeDetachMap assembles a request body based on the contents of a
+// DetachOpts.
+func (opts DetachOpts) ToVolumeDetachMap() (map[string]interface{}, error) {
+	return gophercloud.BuildRequestBody(opts, "os-detach")
+}
+
+// Detach will detach a volume based on volume id.
+func Detach(client *gophercloud.ServiceClient, id string, opts DetachOptsBuilder) (r DetachResult) {
+	b, err := opts.ToVolumeDetachMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+	_, r.Err = client.Post(detachURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{202},
+	})
+	return
+}
+
+// Reserve will reserve a volume based on volume id.
+func Reserve(client *gophercloud.ServiceClient, id string) (r ReserveResult) {
+	b := map[string]interface{}{"os-reserve": make(map[string]interface{})}
+	_, r.Err = client.Post(reserveURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{200, 201, 202},
+	})
+	return
+}
+
+// Unreserve will unreserve a volume based on volume id.
+func Unreserve(client *gophercloud.ServiceClient, id string) (r UnreserveResult) {
+	b := map[string]interface{}{"os-unreserve": make(map[string]interface{})}
+	_, r.Err = client.Post(unreserveURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{200, 201, 202},
+	})
+	return
+}
+
+// InitializeConnectionOptsBuilder allows extensions to add additional parameters to the
+// InitializeConnection request.
+type InitializeConnectionOptsBuilder interface {
+	ToVolumeInitializeConnectionMap() (map[string]interface{}, error)
+}
+
+// InitializeConnectionOpts hosts options for InitializeConnection.
+type InitializeConnectionOpts struct {
+	IP        string   `json:"ip,omitempty"`
+	Host      string   `json:"host,omitempty"`
+	Initiator string   `json:"initiator,omitempty"`
+	Wwpns     []string `json:"wwpns,omitempty"`
+	Wwnns     string   `json:"wwnns,omitempty"`
+	Multipath *bool    `json:"multipath,omitempty"`
+	Platform  string   `json:"platform,omitempty"`
+	OSType    string   `json:"os_type,omitempty"`
+}
+
+// ToVolumeInitializeConnectionMap assembles a request body based on the contents of a
+// InitializeConnectionOpts.
+func (opts InitializeConnectionOpts) ToVolumeInitializeConnectionMap() (map[string]interface{}, error) {
+	b, err := gophercloud.BuildRequestBody(opts, "connector")
+	return map[string]interface{}{"os-initialize_connection": b}, err
+}
+
+// InitializeConnection initializes iscsi connection.
+func InitializeConnection(client *gophercloud.ServiceClient, id string, opts InitializeConnectionOptsBuilder) (r InitializeConnectionResult) {
+	b, err := opts.ToVolumeInitializeConnectionMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+	_, r.Err = client.Post(initializeConnectionURL(client, id), b, &r.Body, &gophercloud.RequestOpts{
+		OkCodes: []int{200, 201, 202},
+	})
+	return
+}
+
+// TerminateConnectionOptsBuilder allows extensions to add additional parameters to the
+// TerminateConnection request.
+type TerminateConnectionOptsBuilder interface {
+	ToVolumeTerminateConnectionMap() (map[string]interface{}, error)
+}
+
+// TerminateConnectionOpts hosts options for TerminateConnection.
+type TerminateConnectionOpts struct {
+	IP        string   `json:"ip,omitempty"`
+	Host      string   `json:"host,omitempty"`
+	Initiator string   `json:"initiator,omitempty"`
+	Wwpns     []string `json:"wwpns,omitempty"`
+	Wwnns     string   `json:"wwnns,omitempty"`
+	Multipath *bool    `json:"multipath,omitempty"`
+	Platform  string   `json:"platform,omitempty"`
+	OSType    string   `json:"os_type,omitempty"`
+}
+
+// ToVolumeTerminateConnectionMap assembles a request body based on the contents of a
+// TerminateConnectionOpts.
+func (opts TerminateConnectionOpts) ToVolumeTerminateConnectionMap() (map[string]interface{}, error) {
+	b, err := gophercloud.BuildRequestBody(opts, "connector")
+	return map[string]interface{}{"os-terminate_connection": b}, err
+}
+
+// TerminateConnection terminates iscsi connection.
+func TerminateConnection(client *gophercloud.ServiceClient, id string, opts TerminateConnectionOptsBuilder) (r TerminateConnectionResult) {
+	b, err := opts.ToVolumeTerminateConnectionMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+	_, r.Err = client.Post(teminateConnectionURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{202},
+	})
+	return
+}