diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IIOManager.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IIOManager.java
index ff1e47f..962f826 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IIOManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/IIOManager.java
@@ -97,4 +97,11 @@
      * @throws HyracksDataException
      */
     FileReference createWorkspaceFile(String prefix) throws HyracksDataException;
+
+    /**
+     * Gets the total disk usage in bytes of this {@link IIOManager} io devices handles.
+     *
+     * @return the total disk usage in bytes
+     */
+    long getTotalDiskUsage();
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/IOManager.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/IOManager.java
index d13ca8d..b5cb21a 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/IOManager.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/io/IOManager.java
@@ -36,6 +36,7 @@
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 
+import org.apache.commons.io.FileUtils;
 import org.apache.hyracks.api.exceptions.ErrorCode;
 import org.apache.hyracks.api.exceptions.HyracksDataException;
 import org.apache.hyracks.api.io.FileReference;
@@ -416,4 +417,13 @@
             Thread.currentThread().interrupt();
         }
     }
+
+    @Override
+    public long getTotalDiskUsage() {
+        long totalSize = 0;
+        for (IODeviceHandle handle : ioDevices) {
+            totalSize += FileUtils.sizeOfDirectory(handle.getMount());
+        }
+        return totalSize;
+    }
 }