diff --git a/ceph-gobench.go b/ceph-gobench.go
index f283bf3..769eaa6 100644
--- a/ceph-gobench.go
+++ b/ceph-gobench.go
@@ -71,23 +71,23 @@ func bench(cephconn *Cephconnection, osddevice Device, buffs *[][]byte, startbuf
 	red := color.New(color.FgHiRed).SprintFunc()
 	darkred := color.New(color.FgRed).SprintFunc()
 	green := color.New(color.FgHiGreen).SprintFunc()
-	darkgreen := color.New(color.FgGreen).SprintFunc()
+	darkgreen := color.New(color.FgGreen).SprintFunc() //todo delete darkgreen
 	buffer.WriteString(fmt.Sprintf("Bench result for %v\n", osddevice.Name))
 	infos := map[string]string{
-		"front_addr": strings.Split(osddevice.Info.FrontAddr, "/")[0],
+		"front_addr":           strings.Split(osddevice.Info.FrontAddr, "/")[0],
 		"ceph_release/version": osddevice.Info.CephRelease + "/" + osddevice.Info.CephVersionShort,
-		"cpu": osddevice.Info.CPU,
-		"hostname": osddevice.Info.Hostname,
+		"cpu":                  osddevice.Info.CPU,
+		"hostname":             osddevice.Info.Hostname,
 		"default_device_class": osddevice.Info.DefaultDeviceClass,
-		"devices": osddevice.Info.Devices,
-		"distro_description": osddevice.Info.DistroDescription,
-		"journal_rotational": osddevice.Info.JournalRotational,
-		"rotational": osddevice.Info.Rotational,
-		"kernel_version": osddevice.Info.KernelVersion,
-		"mem_swap_kb": osddevice.Info.MemSwapKb,
-		"mem_total_kb": osddevice.Info.MemTotalKb,
-		"osd_data": osddevice.Info.OsdData,
-		"osd_objectstore": osddevice.Info.OsdObjectstore,
+		"devices":              osddevice.Info.Devices,
+		"distro_description":   osddevice.Info.DistroDescription,
+		"journal_rotational":   osddevice.Info.JournalRotational,
+		"rotational":           osddevice.Info.Rotational,
+		"kernel_version":       osddevice.Info.KernelVersion,
+		"mem_swap_kb":          osddevice.Info.MemSwapKb,
+		"mem_total_kb":         osddevice.Info.MemTotalKb,
+		"osd_data":             osddevice.Info.OsdData,
+		"osd_objectstore":      osddevice.Info.OsdObjectstore,
 	}
 	var infokeys []string
 	width := []int{0, 0, 0, 0, 0, 0}
@@ -96,23 +96,23 @@ func bench(cephconn *Cephconnection, osddevice Device, buffs *[][]byte, startbuf
 	}
 	sort.Strings(infokeys)
 	for n, key := range infokeys {
-		if width[n % 3] < len(key) {
-			width[n % 3] = len(key)
+		if width[n%3] < len(key) {
+			width[n%3] = len(key)
 		}
-		if width[3 + n % 3] < len(infos[key]) {
-			width[3 + n % 3] = len(infos[key])
+		if width[3+n%3] < len(infos[key]) {
+			width[3+n%3] = len(infos[key])
 		}
 	}
 	buffer.WriteString(
 		darkgreen("osdname") + strings.Repeat(" ", width[2]-len("osdname")+2) +
-		red(osddevice.Name) + strings.Repeat(" ", width[5]-len(osddevice.Name)+2))
+			red(osddevice.Name) + strings.Repeat(" ", width[5]-len(osddevice.Name)+2))
 	for infonum, key := range infokeys {
 		if (infonum % 3) == 2 {
 			buffer.WriteString("\n")
 		}
 		buffer.WriteString(
-			darkgreen(key) + strings.Repeat(" ", width[infonum % 3]-len(key)+2) +
-			yellow(infos[key]) + strings.Repeat(" ", width[3 + infonum % 3]-len(infos[key])+2))
+			darkgreen(key) + strings.Repeat(" ", width[infonum%3]-len(key)+2) +
+				yellow(infos[key]) + strings.Repeat(" ", width[3+infonum%3]-len(infos[key])+2))
 	}
 	buffer.WriteString("\n\n")
 
@@ -120,7 +120,7 @@ func bench(cephconn *Cephconnection, osddevice Device, buffs *[][]byte, startbuf
 	// iops = 1s / latency
 	iops := 1000000 / latencytotal
 	// avg speed = iops * block size / 1 MB
-	avgspeed := (1000000 / float64(latencytotal) * float64(params.blocksize) / 1024 / 1024)
+	avgspeed := 1000000 / float64(latencytotal) * float64(params.blocksize) / 1024 / 1024
 	avgline := fmt.Sprintf("Avg iops: %-5v       Avg speed: %.3f MB/s\n\n", iops, avgspeed)
 	switch {
 	case iops < 80:
@@ -232,7 +232,7 @@ func main() {
 
 	}
 
-	if params.parallel == true {
+	if params.parallel == true { //todo make flag prepare, check objects
 		go func() {
 			wg.Wait()
 			close(results)
diff --git a/flags.go b/flags.go
index 68ba6b2..217dedb 100644
--- a/flags.go
+++ b/flags.go
@@ -70,7 +70,7 @@ func Route() Params {
 		log.Println("Can't convert defined block size. 4K block size will be used")
 		params.objectsize = 4194304
 	}
-	if params.objectsize/params.blocksize < 2 {
+	if params.objectsize/params.blocksize < 2 { //todo not fatal error. warning about offsets
 		log.Fatalf("Current block size: %v\nCurrent object size: %v\nObject size must be at least 2 times bigger than block size", params.blocksize, params.objectsize)
 	}
 	return params
diff --git a/getosd.go b/getosd.go
index 5f70fa3..2e36a6b 100644
--- a/getosd.go
+++ b/getosd.go
@@ -117,6 +117,7 @@ func GetOsdForLocations(params Params, osdcrushdump OsdCrushDump, osddump OsdDum
 
 	osddevices := []Device{}
 	bucketitems := GetCrushHostBuckets(osdcrushdump.Buckets, rootid)
+	//todo check osd up and in
 	if params.define != "" {
 		if strings.HasPrefix(params.define, "osd.") {
 			for _, hostbucket := range bucketitems {
diff --git a/types.go b/types.go
index 446ac8d..552eed4 100644
--- a/types.go
+++ b/types.go
@@ -386,3 +386,5 @@ type OsdMap struct {
 	Up            []int64 `json:"up"`
 	UpPrimary     int64   `json:"up_primary"`
 }
+
+//todo check types (int64 -> uint64)