volume server protobuf: add precentFree & percentUsage to the DiskStatus

weed/pb/volume_server_pb/volume_server.pb.go

@@ -1509,6 +1509,8 @@ type DiskStatus struct {
 	All         uint64  `protobuf:"varint,2,opt,name=all" json:"all,omitempty"`
 	Used        uint64  `protobuf:"varint,3,opt,name=used" json:"used,omitempty"`
 	Free        uint64  `protobuf:"varint,4,opt,name=free" json:"free,omitempty"`
+	PercentFree float32 `protobuf:"fixed32,5,opt,name=percentFree" json:"percentFree,omitempty"`
+	PercentUsed float32 `protobuf:"fixed32,6,opt,name=percentUsed" json:"percentUsed,omitempty"`
 }
 
 func (m *DiskStatus) Reset()                    { *m = DiskStatus{} }
@@ -1544,6 +1546,20 @@ func (m *DiskStatus) GetFree() uint64 {
 	return 0
 }
 
+func (m *DiskStatus) GetPercentFree() float32 {
+	if m != nil {
+		return m.PercentFree
+	}
+	return float32(0.0)
+}
+
+func (m *DiskStatus) GetPercentUsed() float32 {
+	if m != nil {
+		return m.PercentUsed
+	}
+	return float32(0.0)
+}
+
 type MemStatus struct {
 	Goroutines int32  `protobuf:"varint,1,opt,name=goroutines" json:"goroutines,omitempty"`
 	All        uint64 `protobuf:"varint,2,opt,name=all" json:"all,omitempty"`