Added condition to check if file exists and readable and skips it if it is not readable

agent.py

@@ -27,25 +27,27 @@ class ServerData:
         self.public_ip = self.get_public_ip()
         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
-        
-        # Disk space information
-        disk = 0
-        for device in os.listdir('/sys/block'):
+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
+    
+    # Disk space information
+    disk = 0
+    for device in os.listdir('/sys/block'):
+        size_path = f'/sys/block/{device}/size'
+        if os.path.exists(size_path) and os.access(size_path, os.R_OK):
             try:
-                with open(f'/sys/block/{device}/size', 'r') as f:
+                with open(size_path, '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
+            except Exception:
+                pass  # Skip the device if any exception occurs
+
+    disk = disk * 512 // (1024**3)  # convert to GB
+    logging.info(f"RAM: {ram}MB, Disk: {disk}GB")
+    return ram, disk
 
     def get_cpu_count(self):
         cpu_count = 0