diff --git a/pkg/errors/codes/codes.go b/pkg/errors/codes/codes.go
index 211af5cb..779f0064 100644
--- a/pkg/errors/codes/codes.go
+++ b/pkg/errors/codes/codes.go
@@ -55,6 +55,9 @@ const (
 	MeasurementUnitError
 	QuotaViolation
 	IPOutOfRange
+	VolumeNotFound
+	VolumeDegraded
+	VolumeAccessInconsistent
 
 	// This is not a valid code, it is used to get the maximum code value.
 	// Any new codes should be defined above this.
diff --git a/pkg/errors/codes/codes_string.go b/pkg/errors/codes/codes_string.go
index 93c4ec90..bac82a79 100644
--- a/pkg/errors/codes/codes_string.go
+++ b/pkg/errors/codes/codes_string.go
@@ -103,6 +103,12 @@ func (c MocCode) String() string {
 		return "QuotaViolation"
 	case IPOutOfRange:
 		return "IPOutOfRange"
+	case VolumeNotFound:
+		return "VolumeNotFound"
+	case VolumeDegraded:
+		return "VolumeDegraded"
+	case VolumeAccessInconsistent:
+		return "VolumeAccessInconsistent"
 	default:
 		return "MocCode(" + strconv.FormatUint(uint64(c), 10) + ")"
 	}
diff --git a/rpc/nodeagent/storage/moc_nodeagent_virtualharddisk.pb.go b/rpc/nodeagent/storage/moc_nodeagent_virtualharddisk.pb.go
index f4389147..1a0f7e84 100644
--- a/rpc/nodeagent/storage/moc_nodeagent_virtualharddisk.pb.go
+++ b/rpc/nodeagent/storage/moc_nodeagent_virtualharddisk.pb.go
@@ -7,7 +7,7 @@ import (
 	context "context"
 	fmt "fmt"
 	proto "github.com/golang/protobuf/proto"
-	empty "github.com/golang/protobuf/ptypes/empty"
+	_ "github.com/golang/protobuf/ptypes/empty"
 	wrappers "github.com/golang/protobuf/ptypes/wrappers"
 	common "github.com/microsoft/moc/rpc/common"
 	grpc "google.golang.org/grpc"
@@ -613,6 +613,45 @@ func (m *VirtualHardDisk) GetDiskFileFormat() common.DiskFileFormat {
 	return common.DiskFileFormat_DiskFileFormatVHDX
 }
 
+type DiskNotificationRequest struct {
+	ResourceType         string   `protobuf:"bytes,1,opt,name=resourceType,proto3" json:"resourceType,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *DiskNotificationRequest) Reset()         { *m = DiskNotificationRequest{} }
+func (m *DiskNotificationRequest) String() string { return proto.CompactTextString(m) }
+func (*DiskNotificationRequest) ProtoMessage()    {}
+func (*DiskNotificationRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c1f33a566472b7b7, []int{8}
+}
+
+func (m *DiskNotificationRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_DiskNotificationRequest.Unmarshal(m, b)
+}
+func (m *DiskNotificationRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_DiskNotificationRequest.Marshal(b, m, deterministic)
+}
+func (m *DiskNotificationRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_DiskNotificationRequest.Merge(m, src)
+}
+func (m *DiskNotificationRequest) XXX_Size() int {
+	return xxx_messageInfo_DiskNotificationRequest.Size(m)
+}
+func (m *DiskNotificationRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_DiskNotificationRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_DiskNotificationRequest proto.InternalMessageInfo
+
+func (m *DiskNotificationRequest) GetResourceType() string {
+	if m != nil {
+		return m.ResourceType
+	}
+	return ""
+}
+
 func init() {
 	proto.RegisterEnum("moc.nodeagent.storage.VirtualHardDiskType", VirtualHardDiskType_name, VirtualHardDiskType_value)
 	proto.RegisterType((*VirtualHardDiskRequest)(nil), "moc.nodeagent.storage.VirtualHardDiskRequest")
@@ -623,6 +662,7 @@ func init() {
 	proto.RegisterType((*HttpImageProperties)(nil), "moc.nodeagent.storage.HttpImageProperties")
 	proto.RegisterType((*AzureGalleryImageProperties)(nil), "moc.nodeagent.storage.AzureGalleryImageProperties")
 	proto.RegisterType((*VirtualHardDisk)(nil), "moc.nodeagent.storage.VirtualHardDisk")
+	proto.RegisterType((*DiskNotificationRequest)(nil), "moc.nodeagent.storage.DiskNotificationRequest")
 }
 
 func init() {
@@ -630,70 +670,71 @@ func init() {
 }
 
 var fileDescriptor_c1f33a566472b7b7 = []byte{
-	// 1000 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x56, 0xdf, 0x4e, 0x23, 0xb7,
-	0x17, 0xde, 0x81, 0x10, 0x96, 0x93, 0x1f, 0x59, 0xd6, 0x61, 0x61, 0x7e, 0xd9, 0x3f, 0x8a, 0xb2,
-	0xd5, 0x2a, 0x42, 0xea, 0x04, 0xa5, 0xbd, 0xa8, 0xd4, 0xab, 0x40, 0x60, 0x49, 0x17, 0xed, 0x56,
-	0x0e, 0x70, 0x51, 0x55, 0x45, 0x8e, 0x63, 0x12, 0x8b, 0x99, 0xf1, 0xd4, 0xf6, 0x50, 0x65, 0x9f,
-	0xa0, 0x4f, 0xd3, 0xbb, 0x3e, 0x41, 0x2f, 0xdb, 0x07, 0xe8, 0xe3, 0x54, 0x3e, 0x33, 0x84, 0x64,
-	0x92, 0x4a, 0xdc, 0xf4, 0x2a, 0xf1, 0xf7, 0x7d, 0xe7, 0xf3, 0xf1, 0xb1, 0x7d, 0x3c, 0xf0, 0x36,
-	0x52, 0xfc, 0x3a, 0x56, 0x23, 0xc1, 0xc6, 0x22, 0xb6, 0xd7, 0x77, 0x52, 0xdb, 0x94, 0x85, 0x13,
-	0xa6, 0x47, 0x23, 0x69, 0x6e, 0x83, 0x44, 0x2b, 0xab, 0xc8, 0x8b, 0x48, 0xf1, 0x60, 0x26, 0x0a,
-	0x8c, 0x55, 0x9a, 0x8d, 0x45, 0xfd, 0xcd, 0x58, 0xa9, 0x71, 0x28, 0xda, 0x28, 0x1a, 0xa6, 0x37,
-	0xed, 0x5f, 0x34, 0x4b, 0x12, 0xa1, 0x4d, 0x16, 0x56, 0xdf, 0x77, 0xde, 0x5c, 0x45, 0x91, 0x8a,
-	0xf3, 0x9f, 0x9c, 0x78, 0x3d, 0x47, 0xc4, 0xca, 0xca, 0x1b, 0xc9, 0x99, 0x95, 0x33, 0xfa, 0x65,
-	0xd1, 0x57, 0x44, 0x89, 0x9d, 0x66, 0x64, 0xf3, 0x37, 0x0f, 0xf6, 0xae, 0xb2, 0x2c, 0xcf, 0x98,
-	0x1e, 0xf5, 0xa4, 0xb9, 0xa5, 0xe2, 0xe7, 0x54, 0x18, 0x4b, 0x7e, 0x5a, 0x62, 0x06, 0x53, 0x63,
-	0x45, 0x64, 0x7c, 0xaf, 0xb1, 0xde, 0xaa, 0x74, 0xde, 0x05, 0x2b, 0xd7, 0x11, 0x14, 0xed, 0xfe,
-	0xc5, 0x85, 0x7c, 0x0d, 0xdb, 0x9f, 0x12, 0xa1, 0x31, 0xd5, 0x8b, 0x69, 0x22, 0xfc, 0xb5, 0x86,
-	0xd7, 0xaa, 0x76, 0xaa, 0x68, 0x3b, 0x63, 0xe8, 0xa2, 0xa8, 0xf9, 0x87, 0x07, 0xfb, 0x4b, 0x09,
-	0x9b, 0x44, 0xc5, 0x46, 0xfc, 0xe7, 0x19, 0x77, 0xa0, 0x4c, 0x85, 0x49, 0x43, 0x8b, 0xa9, 0x56,
-	0x3a, 0xf5, 0x20, 0x2b, 0x6d, 0x70, 0x5f, 0xda, 0xe0, 0x48, 0xa9, 0xf0, 0x8a, 0x85, 0xa9, 0xa0,
-	0xb9, 0x92, 0xec, 0xc2, 0xc6, 0x89, 0xd6, 0x4a, 0xfb, 0xeb, 0x0d, 0xaf, 0xb5, 0x45, 0xb3, 0x41,
-	0xf3, 0x2f, 0x0f, 0xc8, 0xe0, 0x74, 0xd0, 0x8f, 0xd8, 0x58, 0x7c, 0xaf, 0x55, 0x22, 0xb4, 0x95,
-	0xc2, 0x90, 0x06, 0x54, 0x38, 0xb3, 0x2c, 0x54, 0xe3, 0x8f, 0x2c, 0x12, 0xbe, 0x87, 0x21, 0xf3,
-	0x10, 0xa9, 0xc3, 0x53, 0x96, 0x8e, 0xa4, 0x88, 0x79, 0x56, 0xaf, 0x2d, 0x3a, 0x1b, 0x13, 0x1f,
-	0x36, 0xef, 0x84, 0x36, 0x52, 0xc5, 0xf9, 0x64, 0xf7, 0x43, 0xe7, 0xab, 0x45, 0x28, 0x98, 0x11,
-	0xe8, 0x5b, 0xca, 0x7c, 0xe7, 0x20, 0x97, 0x66, 0xc2, 0xb4, 0x35, 0xfe, 0x46, 0xc3, 0x6b, 0x6d,
-	0xd3, 0x6c, 0x40, 0xde, 0x41, 0x75, 0x24, 0x8c, 0x95, 0x31, 0xd6, 0xbf, 0x27, 0xb5, 0x5f, 0xc6,
-	0xd0, 0x02, 0xda, 0x3c, 0x84, 0xdd, 0x73, 0xc5, 0x59, 0x58, 0x5c, 0x8f, 0x0f, 0xa5, 0x84, 0xd9,
-	0x49, 0xb6, 0x90, 0xa3, 0xd2, 0xaf, 0xbf, 0xfb, 0x1e, 0x45, 0xa4, 0xf9, 0x0d, 0xec, 0x1e, 0x87,
-	0x2a, 0x16, 0xab, 0x2a, 0xe0, 0xf0, 0x81, 0x4a, 0x35, 0x7f, 0xa8, 0xc0, 0x03, 0xd4, 0x6c, 0x43,
-	0xed, 0xcc, 0xda, 0x64, 0x79, 0xaa, 0xcd, 0x89, 0xb5, 0xc9, 0x25, 0x3d, 0xcf, 0x83, 0xee, 0x87,
-	0xcd, 0x4b, 0x78, 0xd9, 0xfd, 0x9c, 0x6a, 0xf1, 0x9e, 0x85, 0xa1, 0xd0, 0xd3, 0x62, 0xe0, 0x2b,
-	0x28, 0x1b, 0x66, 0x2e, 0x69, 0x7f, 0x21, 0xcb, 0x1c, 0x9b, 0xaf, 0xe9, 0xda, 0x42, 0x4d, 0x9b,
-	0x7f, 0x6f, 0xc2, 0xb3, 0xc2, 0x39, 0x21, 0x04, 0x4a, 0xf1, 0xc3, 0xc6, 0xe1, 0x7f, 0x52, 0x85,
-	0x35, 0x39, 0xca, 0x83, 0xd7, 0xe4, 0x08, 0xe7, 0xcb, 0x16, 0xb7, 0xbe, 0x30, 0x1f, 0x62, 0xb3,
-	0x8a, 0x95, 0x8a, 0x15, 0x23, 0x5f, 0xc0, 0x36, 0x57, 0xb1, 0x65, 0x32, 0x16, 0x1a, 0x77, 0x71,
-	0x03, 0x2d, 0x17, 0x41, 0xf2, 0x16, 0xca, 0xc6, 0x32, 0x9b, 0x1a, 0xdc, 0xa9, 0x4a, 0xa7, 0x82,
-	0x47, 0x7e, 0x80, 0x10, 0xcd, 0x29, 0x97, 0xa6, 0x91, 0x9f, 0x85, 0xbf, 0xd9, 0xf0, 0x5a, 0xeb,
-	0x14, 0xff, 0xbb, 0x85, 0x8e, 0xa6, 0x31, 0x8b, 0x24, 0xf7, 0x9f, 0x36, 0xbc, 0xd6, 0x53, 0x7a,
-	0x3f, 0x74, 0x87, 0x60, 0x18, 0x2a, 0x7e, 0xeb, 0x64, 0xc3, 0xa9, 0x15, 0xc6, 0xdf, 0x6a, 0x78,
-	0xad, 0x0d, 0x5a, 0x40, 0x49, 0x00, 0x24, 0x54, 0x63, 0xc9, 0x59, 0x68, 0x04, 0xb7, 0x4a, 0x67,
-	0x5a, 0x40, 0xed, 0x0a, 0x86, 0x1c, 0x42, 0x2d, 0x99, 0x4c, 0x4d, 0x31, 0xa0, 0x82, 0x01, 0xab,
-	0x28, 0x72, 0x00, 0x3b, 0x6e, 0xb5, 0x5a, 0xb9, 0x8d, 0x8c, 0xd3, 0x68, 0x28, 0xb4, 0xff, 0x3f,
-	0x5c, 0xc3, 0x12, 0xee, 0xb2, 0x79, 0xc0, 0x42, 0x95, 0x75, 0x44, 0x7f, 0x1b, 0xd5, 0x2b, 0x18,
-	0xf2, 0x06, 0xc0, 0xb5, 0xe8, 0xdc, 0xb5, 0x8a, 0xba, 0x39, 0xc4, 0xf9, 0xe5, 0xdd, 0x3c, 0x62,
-	0x7c, 0x22, 0xe3, 0xec, 0x26, 0x3d, 0xc3, 0x3d, 0x58, 0xc1, 0xb8, 0x8b, 0x6a, 0xb8, 0x91, 0xb8,
-	0x99, 0x3b, 0xd9, 0x45, 0xbd, 0x1f, 0x93, 0x1f, 0xa1, 0x56, 0x78, 0x19, 0xac, 0xeb, 0x7f, 0xcf,
-	0xb1, 0xff, 0x1d, 0x3c, 0xae, 0x49, 0xb9, 0x66, 0x48, 0x57, 0xd9, 0xb8, 0x23, 0x20, 0x62, 0x2b,
-	0xed, 0xd4, 0x27, 0x73, 0x47, 0xe0, 0x04, 0x21, 0x9a, 0x53, 0xe4, 0x35, 0x94, 0x2c, 0x1b, 0x1b,
-	0xbf, 0x86, 0x92, 0x2d, 0x94, 0x5c, 0xb0, 0xb1, 0xa1, 0x08, 0x93, 0x43, 0x80, 0xec, 0x40, 0x62,
-	0x63, 0xde, 0xc5, 0xc4, 0x76, 0x50, 0x84, 0xd7, 0x27, 0xbb, 0x8a, 0x74, 0x4e, 0x43, 0xba, 0xb0,
-	0x33, 0x99, 0x26, 0x42, 0x5f, 0xbd, 0x17, 0x71, 0xde, 0xaf, 0xfd, 0x17, 0x18, 0xf7, 0x02, 0xe3,
-	0xce, 0x0a, 0x24, 0x5d, 0x92, 0x93, 0xef, 0xa0, 0xc6, 0x43, 0x95, 0x8e, 0xfa, 0xb1, 0xb4, 0x3d,
-	0x66, 0x59, 0xde, 0x03, 0xf6, 0xd0, 0xc5, 0x47, 0x97, 0xe3, 0x65, 0x9e, 0xae, 0x0a, 0x22, 0xdf,
-	0x42, 0xd5, 0x15, 0xe4, 0x54, 0x86, 0xe2, 0x54, 0xe9, 0x88, 0x59, 0x7f, 0x1f, 0x6d, 0x6a, 0x68,
-	0xd3, 0x5b, 0xa0, 0x68, 0x41, 0x7a, 0xf0, 0x01, 0x6a, 0x2b, 0xaa, 0x4d, 0xf6, 0x80, 0x7c, 0x1a,
-	0x5c, 0x5f, 0xf5, 0xe9, 0xc5, 0x65, 0xf7, 0xfc, 0xac, 0x4b, 0x7b, 0xbd, 0xfe, 0xe0, 0xc3, 0xce,
-	0x13, 0xf2, 0x0a, 0xfc, 0x5e, 0xf7, 0xa2, 0xeb, 0x46, 0x4b, 0xac, 0xd7, 0xf9, 0xd3, 0x83, 0xdd,
-	0x82, 0x5b, 0xd7, 0x6d, 0x2c, 0x91, 0x50, 0xee, 0xc7, 0x77, 0xea, 0x56, 0x90, 0x2f, 0x1f, 0xf9,
-	0x2e, 0x65, 0x0f, 0x73, 0x3d, 0x78, 0xac, 0x3c, 0x7b, 0x16, 0x9b, 0x4f, 0xc8, 0x19, 0x3c, 0x3f,
-	0x9e, 0x08, 0x7e, 0xfb, 0x71, 0xee, 0xeb, 0x80, 0xec, 0x2d, 0xbd, 0x5e, 0x27, 0xee, 0xc3, 0xa0,
-	0xfe, 0x7f, 0xb4, 0x9f, 0x97, 0x3e, 0x38, 0x1d, 0x1d, 0xfe, 0x10, 0x8c, 0xa5, 0x9d, 0xa4, 0xc3,
-	0x80, 0xab, 0xa8, 0x1d, 0x49, 0xae, 0x95, 0x51, 0x37, 0xb6, 0x1d, 0x29, 0xde, 0xd6, 0x09, 0x6f,
-	0xcf, 0xb2, 0x6a, 0xe7, 0x59, 0x0d, 0xcb, 0x68, 0xff, 0xd5, 0x3f, 0x01, 0x00, 0x00, 0xff, 0xff,
-	0xd0, 0x17, 0x92, 0x64, 0x1b, 0x09, 0x00, 0x00,
+	// 1019 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x55, 0xdf, 0x6e, 0xdb, 0xb6,
+	0x17, 0xae, 0x12, 0xc7, 0x69, 0x8e, 0x1b, 0x37, 0xa5, 0xd3, 0x44, 0x3f, 0xf7, 0x0f, 0x0c, 0xf5,
+	0x87, 0xc2, 0x08, 0x30, 0x39, 0xf0, 0x76, 0x31, 0x60, 0xd8, 0x85, 0x13, 0x37, 0x8d, 0xd7, 0xa0,
+	0x1d, 0xe8, 0x24, 0x17, 0xc3, 0xb0, 0x8c, 0x96, 0x19, 0x9b, 0x88, 0x24, 0x6a, 0x24, 0x95, 0xc1,
+	0x7d, 0x82, 0x3d, 0xcd, 0xee, 0xf6, 0x04, 0xbb, 0xdd, 0x03, 0xec, 0x7e, 0x2f, 0x32, 0xf0, 0x48,
+	0x76, 0x6c, 0xd9, 0x01, 0x72, 0xb3, 0x2b, 0x89, 0xdf, 0xf7, 0x9d, 0x8f, 0x87, 0x87, 0xe4, 0x21,
+	0xbc, 0x89, 0x64, 0x70, 0x15, 0xcb, 0x21, 0x67, 0x23, 0x1e, 0x9b, 0xab, 0x5b, 0xa1, 0x4c, 0xca,
+	0xc2, 0x31, 0x53, 0xc3, 0xa1, 0xd0, 0x37, 0x7e, 0xa2, 0xa4, 0x91, 0xe4, 0x79, 0x24, 0x03, 0x7f,
+	0x26, 0xf2, 0xb5, 0x91, 0x8a, 0x8d, 0x78, 0xfd, 0xf5, 0x48, 0xca, 0x51, 0xc8, 0x5b, 0x28, 0x1a,
+	0xa4, 0xd7, 0xad, 0x5f, 0x15, 0x4b, 0x12, 0xae, 0x74, 0x16, 0x56, 0xdf, 0xb7, 0xde, 0x81, 0x8c,
+	0x22, 0x19, 0xe7, 0x9f, 0x9c, 0x78, 0x35, 0x47, 0xc4, 0xd2, 0x88, 0x6b, 0x11, 0x30, 0x23, 0x66,
+	0xf4, 0x8b, 0xa2, 0x2f, 0x8f, 0x12, 0x33, 0xc9, 0x48, 0xef, 0x77, 0x07, 0xf6, 0x2e, 0xb3, 0x2c,
+	0x4f, 0x99, 0x1a, 0x76, 0x85, 0xbe, 0xa1, 0xfc, 0x97, 0x94, 0x6b, 0x43, 0x7e, 0x5a, 0x62, 0xfa,
+	0x13, 0x6d, 0x78, 0xa4, 0x5d, 0xa7, 0xb1, 0xde, 0xac, 0xb4, 0xdf, 0xfa, 0x2b, 0xd7, 0xe1, 0x17,
+	0xed, 0xee, 0x71, 0x21, 0x5f, 0xc1, 0xf6, 0xa7, 0x84, 0x2b, 0x4c, 0xf5, 0x7c, 0x92, 0x70, 0x77,
+	0xad, 0xe1, 0x34, 0xab, 0xed, 0x2a, 0xda, 0xce, 0x18, 0xba, 0x28, 0xf2, 0xfe, 0x74, 0x60, 0x7f,
+	0x29, 0x61, 0x9d, 0xc8, 0x58, 0xf3, 0xff, 0x3c, 0xe3, 0x36, 0x94, 0x29, 0xd7, 0x69, 0x68, 0x30,
+	0xd5, 0x4a, 0xbb, 0xee, 0x67, 0xa5, 0xf5, 0xa7, 0xa5, 0xf5, 0x8f, 0xa4, 0x0c, 0x2f, 0x59, 0x98,
+	0x72, 0x9a, 0x2b, 0xc9, 0x2e, 0x6c, 0xbc, 0x53, 0x4a, 0x2a, 0x77, 0xbd, 0xe1, 0x34, 0xb7, 0x68,
+	0x36, 0xf0, 0xfe, 0x72, 0x80, 0xf4, 0x4f, 0xfa, 0xbd, 0x88, 0x8d, 0xf8, 0xf7, 0x4a, 0x26, 0x5c,
+	0x19, 0xc1, 0x35, 0x69, 0x40, 0x25, 0x60, 0x86, 0x85, 0x72, 0xf4, 0x91, 0x45, 0xdc, 0x75, 0x30,
+	0x64, 0x1e, 0x22, 0x75, 0x78, 0xcc, 0xd2, 0xa1, 0xe0, 0x71, 0x90, 0xd5, 0x6b, 0x8b, 0xce, 0xc6,
+	0xc4, 0x85, 0xcd, 0x5b, 0xae, 0xb4, 0x90, 0x71, 0x3e, 0xd9, 0x74, 0x68, 0x7d, 0x15, 0x0f, 0x39,
+	0xd3, 0x1c, 0x7d, 0x4b, 0x99, 0xef, 0x1c, 0x64, 0xd3, 0x4c, 0x98, 0x32, 0xda, 0xdd, 0x68, 0x38,
+	0xcd, 0x6d, 0x9a, 0x0d, 0xc8, 0x5b, 0xa8, 0x0e, 0xb9, 0x36, 0x22, 0xc6, 0xfa, 0x77, 0x85, 0x72,
+	0xcb, 0x18, 0x5a, 0x40, 0xbd, 0x43, 0xd8, 0x3d, 0x93, 0x01, 0x0b, 0x8b, 0xeb, 0x71, 0xa1, 0x94,
+	0x30, 0x33, 0xce, 0x16, 0x72, 0x54, 0xfa, 0xed, 0x0f, 0xd7, 0xa1, 0x88, 0x78, 0x5f, 0xc3, 0xee,
+	0x71, 0x28, 0x63, 0xbe, 0xaa, 0x02, 0x16, 0xef, 0xcb, 0x54, 0x05, 0x77, 0x15, 0xb8, 0x83, 0xbc,
+	0x16, 0xd4, 0x4e, 0x8d, 0x49, 0x96, 0xa7, 0xda, 0x1c, 0x1b, 0x93, 0x5c, 0xd0, 0xb3, 0x3c, 0x68,
+	0x3a, 0xf4, 0x2e, 0xe0, 0x45, 0xe7, 0x73, 0xaa, 0xf8, 0x7b, 0x16, 0x86, 0x5c, 0x4d, 0x8a, 0x81,
+	0x2f, 0xa1, 0xac, 0x99, 0xbe, 0xa0, 0xbd, 0x85, 0x2c, 0x73, 0x6c, 0xbe, 0xa6, 0x6b, 0x0b, 0x35,
+	0xf5, 0xfe, 0xde, 0x84, 0xa7, 0x85, 0x73, 0x42, 0x08, 0x94, 0xe2, 0xbb, 0x8d, 0xc3, 0x7f, 0x52,
+	0x85, 0x35, 0x31, 0xcc, 0x83, 0xd7, 0xc4, 0x10, 0xe7, 0xcb, 0x16, 0xb7, 0xbe, 0x30, 0x1f, 0x62,
+	0xb3, 0x8a, 0x95, 0x8a, 0x15, 0x23, 0xff, 0x87, 0xed, 0x40, 0xc6, 0x86, 0x89, 0x98, 0x2b, 0xdc,
+	0xc5, 0x0d, 0xb4, 0x5c, 0x04, 0xc9, 0x1b, 0x28, 0x6b, 0xc3, 0x4c, 0xaa, 0x71, 0xa7, 0x2a, 0xed,
+	0x0a, 0x1e, 0xf9, 0x3e, 0x42, 0x34, 0xa7, 0x6c, 0x9a, 0x5a, 0x7c, 0xe6, 0xee, 0x66, 0xc3, 0x69,
+	0xae, 0x53, 0xfc, 0xb7, 0x0b, 0x1d, 0x4e, 0x62, 0x16, 0x89, 0xc0, 0x7d, 0xdc, 0x70, 0x9a, 0x8f,
+	0xe9, 0x74, 0x68, 0x0f, 0xc1, 0x20, 0x94, 0xc1, 0x8d, 0x95, 0x0d, 0x26, 0x86, 0x6b, 0x77, 0xab,
+	0xe1, 0x34, 0x37, 0x68, 0x01, 0x25, 0x3e, 0x90, 0x50, 0x8e, 0x44, 0xc0, 0x42, 0xcd, 0x03, 0x23,
+	0x55, 0xa6, 0x05, 0xd4, 0xae, 0x60, 0xc8, 0x21, 0xd4, 0x92, 0xf1, 0x44, 0x17, 0x03, 0x2a, 0x18,
+	0xb0, 0x8a, 0x22, 0x07, 0xb0, 0x63, 0x57, 0xab, 0xa4, 0xdd, 0xc8, 0x38, 0x8d, 0x06, 0x5c, 0xb9,
+	0x4f, 0x70, 0x0d, 0x4b, 0xb8, 0xcd, 0xe6, 0x0e, 0x0b, 0x65, 0xd6, 0x11, 0xdd, 0x6d, 0x54, 0xaf,
+	0x60, 0xc8, 0x6b, 0x00, 0xdb, 0xa2, 0x73, 0xd7, 0x2a, 0xea, 0xe6, 0x10, 0xeb, 0x97, 0x77, 0xf3,
+	0x88, 0x05, 0x63, 0x11, 0x67, 0x37, 0xe9, 0x29, 0xee, 0xc1, 0x0a, 0xc6, 0x5e, 0x54, 0x1d, 0x68,
+	0x81, 0x9b, 0xb9, 0x93, 0x5d, 0xd4, 0xe9, 0x98, 0xfc, 0x08, 0xb5, 0xc2, 0xcb, 0x60, 0x6c, 0xff,
+	0x7b, 0x86, 0xfd, 0xef, 0xe0, 0x61, 0x4d, 0xca, 0x36, 0x43, 0xba, 0xca, 0xc6, 0x1e, 0x01, 0x1e,
+	0x1b, 0x61, 0x26, 0x2e, 0x99, 0x3b, 0x02, 0xef, 0x10, 0xa2, 0x39, 0x45, 0x5e, 0x41, 0xc9, 0xb0,
+	0x91, 0x76, 0x6b, 0x28, 0xd9, 0x42, 0xc9, 0x39, 0x1b, 0x69, 0x8a, 0x30, 0x39, 0x04, 0xc8, 0x0e,
+	0x24, 0x36, 0xe6, 0x5d, 0x4c, 0x6c, 0x07, 0x45, 0x78, 0x7d, 0xb2, 0xab, 0x48, 0xe7, 0x34, 0xa4,
+	0x03, 0x3b, 0xe3, 0x49, 0xc2, 0xd5, 0xe5, 0x7b, 0x1e, 0xe7, 0xfd, 0xda, 0x7d, 0x8e, 0x71, 0xcf,
+	0x31, 0xee, 0xb4, 0x40, 0xd2, 0x25, 0x39, 0xf9, 0x0e, 0x6a, 0x41, 0x28, 0xd3, 0x61, 0x2f, 0x16,
+	0xa6, 0xcb, 0x0c, 0xcb, 0x7b, 0xc0, 0x1e, 0xba, 0xb8, 0xe8, 0x72, 0xbc, 0xcc, 0xd3, 0x55, 0x41,
+	0xe4, 0x1b, 0xa8, 0xda, 0x82, 0x9c, 0x88, 0x90, 0x9f, 0x48, 0x15, 0x31, 0xe3, 0xee, 0xa3, 0x4d,
+	0x0d, 0x6d, 0xba, 0x0b, 0x14, 0x2d, 0x48, 0xbd, 0x6f, 0x61, 0xdf, 0x2a, 0x3e, 0xce, 0xbd, 0xa5,
+	0xd3, 0x47, 0xd1, 0x83, 0x27, 0x8a, 0xcf, 0x95, 0x26, 0xbb, 0xe9, 0x0b, 0xd8, 0xc1, 0x07, 0xa8,
+	0xad, 0xd8, 0x2c, 0xb2, 0x07, 0xe4, 0x53, 0xff, 0xea, 0xb2, 0x47, 0xcf, 0x2f, 0x3a, 0x67, 0xa7,
+	0x1d, 0xda, 0xed, 0xf6, 0xfa, 0x1f, 0x76, 0x1e, 0x91, 0x97, 0xe0, 0x76, 0x3b, 0xe7, 0x1d, 0x3b,
+	0x5a, 0x62, 0x9d, 0xf6, 0x3f, 0x0e, 0xec, 0x16, 0xdc, 0x3a, 0xf6, 0x5c, 0x10, 0x01, 0xe5, 0x5e,
+	0x7c, 0x2b, 0x6f, 0x38, 0xf9, 0xe2, 0x81, 0xcf, 0x5a, 0xb6, 0x84, 0xba, 0xff, 0x50, 0x79, 0xf6,
+	0xaa, 0x7a, 0x8f, 0xc8, 0xcf, 0xf0, 0xec, 0x78, 0xcc, 0x83, 0x85, 0x82, 0x90, 0xfb, 0x6c, 0xee,
+	0xa9, 0x5c, 0xfd, 0x7f, 0xa8, 0x5f, 0x64, 0xa6, 0x33, 0x1c, 0x1d, 0xfe, 0xe0, 0x8f, 0x84, 0x19,
+	0xa7, 0x03, 0x3f, 0x90, 0x51, 0x2b, 0x12, 0x81, 0x92, 0x5a, 0x5e, 0x9b, 0x56, 0x24, 0x83, 0x96,
+	0x4a, 0x82, 0xd6, 0x6c, 0x9a, 0x56, 0x3e, 0xcd, 0xa0, 0x8c, 0x6f, 0xee, 0x97, 0xff, 0x06, 0x00,
+	0x00, 0xff, 0xff, 0xb7, 0xfa, 0xb4, 0x5d, 0x72, 0x09, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -709,7 +750,7 @@ const _ = grpc.SupportPackageIsVersion4
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type VirtualHardDiskAgentClient interface {
 	Invoke(ctx context.Context, in *VirtualHardDiskRequest, opts ...grpc.CallOption) (*VirtualHardDiskResponse, error)
-	CheckNotification(ctx context.Context, in *empty.Empty, opts ...grpc.CallOption) (*common.NotificationResponse, error)
+	CheckNotification(ctx context.Context, in *DiskNotificationRequest, opts ...grpc.CallOption) (*common.NotificationResponse, error)
 }
 
 type virtualHardDiskAgentClient struct {
@@ -729,7 +770,7 @@ func (c *virtualHardDiskAgentClient) Invoke(ctx context.Context, in *VirtualHard
 	return out, nil
 }
 
-func (c *virtualHardDiskAgentClient) CheckNotification(ctx context.Context, in *empty.Empty, opts ...grpc.CallOption) (*common.NotificationResponse, error) {
+func (c *virtualHardDiskAgentClient) CheckNotification(ctx context.Context, in *DiskNotificationRequest, opts ...grpc.CallOption) (*common.NotificationResponse, error) {
 	out := new(common.NotificationResponse)
 	err := c.cc.Invoke(ctx, "/moc.nodeagent.storage.VirtualHardDiskAgent/CheckNotification", in, out, opts...)
 	if err != nil {
@@ -741,7 +782,7 @@ func (c *virtualHardDiskAgentClient) CheckNotification(ctx context.Context, in *
 // VirtualHardDiskAgentServer is the server API for VirtualHardDiskAgent service.
 type VirtualHardDiskAgentServer interface {
 	Invoke(context.Context, *VirtualHardDiskRequest) (*VirtualHardDiskResponse, error)
-	CheckNotification(context.Context, *empty.Empty) (*common.NotificationResponse, error)
+	CheckNotification(context.Context, *DiskNotificationRequest) (*common.NotificationResponse, error)
 }
 
 // UnimplementedVirtualHardDiskAgentServer can be embedded to have forward compatible implementations.
@@ -751,7 +792,7 @@ type UnimplementedVirtualHardDiskAgentServer struct {
 func (*UnimplementedVirtualHardDiskAgentServer) Invoke(ctx context.Context, req *VirtualHardDiskRequest) (*VirtualHardDiskResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Invoke not implemented")
 }
-func (*UnimplementedVirtualHardDiskAgentServer) CheckNotification(ctx context.Context, req *empty.Empty) (*common.NotificationResponse, error) {
+func (*UnimplementedVirtualHardDiskAgentServer) CheckNotification(ctx context.Context, req *DiskNotificationRequest) (*common.NotificationResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CheckNotification not implemented")
 }
 
@@ -778,7 +819,7 @@ func _VirtualHardDiskAgent_Invoke_Handler(srv interface{}, ctx context.Context,
 }
 
 func _VirtualHardDiskAgent_CheckNotification_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(empty.Empty)
+	in := new(DiskNotificationRequest)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -790,7 +831,7 @@ func _VirtualHardDiskAgent_CheckNotification_Handler(srv interface{}, ctx contex
 		FullMethod: "/moc.nodeagent.storage.VirtualHardDiskAgent/CheckNotification",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(VirtualHardDiskAgentServer).CheckNotification(ctx, req.(*empty.Empty))
+		return srv.(VirtualHardDiskAgentServer).CheckNotification(ctx, req.(*DiskNotificationRequest))
 	}
 	return interceptor(ctx, in, info, handler)
 }
diff --git a/rpc/nodeagent/storage/virtualharddisk/moc_nodeagent_virtualharddisk.proto b/rpc/nodeagent/storage/virtualharddisk/moc_nodeagent_virtualharddisk.proto
index d6111c0a..ad86ddb6 100644
--- a/rpc/nodeagent/storage/virtualharddisk/moc_nodeagent_virtualharddisk.proto
+++ b/rpc/nodeagent/storage/virtualharddisk/moc_nodeagent_virtualharddisk.proto
@@ -79,7 +79,11 @@ message VirtualHardDisk {
 	DiskFileFormat diskFileFormat = 23;
 }
 
+message DiskNotificationRequest {
+	string resourceType = 1;
+}
+
 service VirtualHardDiskAgent {
 	rpc Invoke(VirtualHardDiskRequest) returns (VirtualHardDiskResponse) {}
-	rpc CheckNotification(google.protobuf.Empty) returns (NotificationResponse) {}
-}
+	rpc CheckNotification(DiskNotificationRequest) returns (NotificationResponse) {}
+}
\ No newline at end of file