diff --git a/asterixdb/asterix-cloud/src/main/java/org/apache/asterix/cloud/AbstractCloudIOManager.java b/asterixdb/asterix-cloud/src/main/java/org/apache/asterix/cloud/AbstractCloudIOManager.java
index c005253..da014a4 100644
--- a/asterixdb/asterix-cloud/src/main/java/org/apache/asterix/cloud/AbstractCloudIOManager.java
+++ b/asterixdb/asterix-cloud/src/main/java/org/apache/asterix/cloud/AbstractCloudIOManager.java
@@ -26,6 +26,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.ByteBuffer;
+import java.nio.file.FileStore;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
@@ -51,6 +52,7 @@
 import org.apache.hyracks.api.io.IIOBulkOperation;
 import org.apache.hyracks.api.io.IODeviceHandle;
 import org.apache.hyracks.api.util.IoUtil;
+import org.apache.hyracks.cloud.filesystem.PhysicalDrive;
 import org.apache.hyracks.cloud.io.ICloudIOManager;
 import org.apache.hyracks.cloud.io.request.ICloudBeforeRetryRequest;
 import org.apache.hyracks.cloud.io.request.ICloudRequest;
@@ -76,6 +78,7 @@
     protected final List<FileReference> partitionPaths;
     protected final IOManager localIoManager;
     protected final INamespacePathResolver nsPathResolver;
+    private final List<FileStore> drivePaths;
 
     public AbstractCloudIOManager(IOManager ioManager, CloudProperties cloudProperties,
             INamespacePathResolver nsPathResolver, ICloudGuardian guardian) throws HyracksDataException {
@@ -90,6 +93,7 @@
         partitions = new HashSet<>();
         partitionPaths = new ArrayList<>();
         this.localIoManager = ioManager;
+        drivePaths = PhysicalDrive.getDrivePaths(ioDevices);
     }
 
     /*
@@ -474,4 +478,9 @@
         }
         return size;
     }
+
+    @Override
+    public long getTotalDiskUsage() {
+        return PhysicalDrive.getUsedSpace(drivePaths);
+    }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-cloud/src/main/java/org/apache/hyracks/cloud/cache/unit/AbstractIndexUnit.java b/hyracks-fullstack/hyracks/hyracks-cloud/src/main/java/org/apache/hyracks/cloud/cache/unit/AbstractIndexUnit.java
index 1532340..54ea23c 100644
--- a/hyracks-fullstack/hyracks/hyracks-cloud/src/main/java/org/apache/hyracks/cloud/cache/unit/AbstractIndexUnit.java
+++ b/hyracks-fullstack/hyracks/hyracks-cloud/src/main/java/org/apache/hyracks/cloud/cache/unit/AbstractIndexUnit.java
@@ -36,7 +36,7 @@
 
     public final void open() {
         lastAccessTime.set(System.nanoTime());
-        openCounter.get();
+        openCounter.incrementAndGet();
     }
 
     public final void close() {
diff --git a/hyracks-fullstack/hyracks/hyracks-cloud/src/main/java/org/apache/hyracks/cloud/filesystem/PhysicalDrive.java b/hyracks-fullstack/hyracks/hyracks-cloud/src/main/java/org/apache/hyracks/cloud/filesystem/PhysicalDrive.java
index 7010e88..28069a9 100644
--- a/hyracks-fullstack/hyracks/hyracks-cloud/src/main/java/org/apache/hyracks/cloud/filesystem/PhysicalDrive.java
+++ b/hyracks-fullstack/hyracks/hyracks-cloud/src/main/java/org/apache/hyracks/cloud/filesystem/PhysicalDrive.java
@@ -53,17 +53,18 @@
 
     @Override
     public boolean computeAndCheckIsPressured() {
-        long usedSpace = getUsedSpace();
+        long usedSpace = getUsedSpace(drivePaths);
         long pressureCapacity = diskSpace.getPressureCapacity();
         boolean isPressured = usedSpace > pressureCapacity;
         this.usedSpace.set(usedSpace);
 
-        if (isPressured) {
-            LOGGER.info("Used space: {}, pressureCapacity: {} (isPressured: {})",
+        if (usedSpace >= diskSpace.getAllocatedCapacity()) {
+            LOGGER.warn(
+                    "Allocated disk space has been exceeded. Used space: {}, pressureCapacity: {} (isPressured: {})",
                     StorageUtil.toHumanReadableSize(usedSpace), StorageUtil.toHumanReadableSize(pressureCapacity),
                     true);
-        } else if (usedSpace >= diskSpace.getAllocatedCapacity()) {
-            LOGGER.warn("Allocated disk space has been exceeded. Used space: {}, pressureCapacity: {}",
+        } else if (isPressured) {
+            LOGGER.info("Used space: {}, pressureCapacity: {} (isPressured: {})",
                     StorageUtil.toHumanReadableSize(usedSpace), StorageUtil.toHumanReadableSize(pressureCapacity),
                     true);
         } else {
@@ -85,10 +86,9 @@
         return usedSpace.get() < diskSpace.getPressureCapacity();
     }
 
-    private long getUsedSpace() {
+    public static long getUsedSpace(List<FileStore> drivePaths) {
         long totalUsedSpace = 0;
-        for (int i = 0; i < drivePaths.size(); i++) {
-            FileStore device = drivePaths.get(i);
+        for (FileStore device : drivePaths) {
             try {
                 totalUsedSpace += getTotalSpace(device) - getUsableSpace(device);
             } catch (HyracksDataException e) {
@@ -121,7 +121,7 @@
         return new DiskSpace(allocatedCapacity, pressureCapacity);
     }
 
-    private static List<FileStore> getDrivePaths(List<IODeviceHandle> deviceHandles) throws HyracksDataException {
+    public static List<FileStore> getDrivePaths(List<IODeviceHandle> deviceHandles) throws HyracksDataException {
         Set<String> distinctDrives = new HashSet<>();
         List<FileStore> fileStores = new ArrayList<>();
         for (IODeviceHandle handle : deviceHandles) {
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 b35111e..740940e 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
@@ -76,7 +76,7 @@
     private final ExecutorService executor;
     private final BlockingQueue<IoRequest> submittedRequests;
     private final BlockingQueue<IoRequest> freeRequests;
-    private final List<IODeviceHandle> ioDevices;
+    protected final List<IODeviceHandle> ioDevices;
     private final List<IODeviceHandle> workspaces;
     private final IFileDeviceResolver deviceComputer;
     /*