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devicemapper: Use device/inode of the root dir, not the image

This way the devicemapper prefix stays stable even if we're not
using loopback mounted devices.
Alexander Larsson пре 11 година
родитељ
комит
e6a73e65a2
1 измењених фајлова са 3 додато и 3 уклоњено
  1. 3 3
      devmapper/deviceset_devmapper.go

+ 3 - 3
devmapper/deviceset_devmapper.go

@@ -361,11 +361,11 @@ func (devices *DeviceSetDM) initDevmapper() error {
 		return err
 	}
 
-	// Set the device prefix from the device id and inode of the data image
+	// Set the device prefix from the device id and inode of the docker root dir
 
-	st, err := os.Stat(data)
+	st, err := os.Stat(devices.root)
 	if err != nil {
-		return fmt.Errorf("Error looking up data image %s: %s", data, err)
+		return fmt.Errorf("Error looking up dir %s: %s", devices.root, err)
 	}
 	sysSt := st.Sys().(*syscall.Stat_t)
 	// "reg-" stands for "regular file".