disk space calculation using /sys/block/

agent.py

@@ -28,12 +28,22 @@ class ServerData:
         logging.basicConfig(level=logging.INFO)
 
     def get_ram_and_disk(self):
+        # RAM information
         with open('/proc/meminfo', 'r') as f:
             meminfo = f.read()
         ram = int([x for x in meminfo.split('\n') if 'MemTotal' in x][0].split()[1]) // 1024
-        with open('/proc/diskstats', 'r') as f:
-            diskstats = f.read()
-        disk = sum(int(x.split()[9]) for x in diskstats.split('\n') if x) * 512 // 10**9
+        
+        # Disk space information
+        disk = 0
+        for device in os.listdir('/sys/block'):
+            try:
+                with open(f'/sys/block/{device}/size', 'r') as f:
+                    size = int(f.read().strip())
+                    disk += size
+            except Exception as e:
+                logging.error(f"Failed to read disk size for {device}: {e}")
+        
+        disk = disk * 512 // (1024**3)  # convert to GB
         logging.info(f"RAM: {ram}MB, Disk: {disk}GB")
         return ram, disk