Fix incorrect error strings. (#2580)

cmd/xl-v1-errors.go

@@ -22,7 +22,7 @@ import "errors"
 var errXLMaxDisks = errors.New("Number of disks are higher than supported maximum count '16'")
 
 // errXLMinDisks - returned for minimum number of disks.
-var errXLMinDisks = errors.New("Minimum '6' disks are required to enable erasure code")
+var errXLMinDisks = errors.New("Minimum '4' disks are required to enable erasure code")
 
 // errXLNumDisks - returned for odd number of disks.
 var errXLNumDisks = errors.New("Total number of disks should be multiples of '2'")

cmd/xl-v1.go

@@ -134,7 +134,7 @@ func newXLObjects(disks, ignoredDisks []string) (ObjectLayer, error) {
 
 	// Initialize meta volume, if volume already exists ignores it.
 	if err := initMetaVolume(storageDisks); err != nil {
-		return nil, fmt.Errorf("Unable to initialize '.minio' meta volume, %s", err)
+		return nil, fmt.Errorf("Unable to initialize '.minio.sys' meta volume, %s", err)
 	}
 
 	// Handles different cases properly.