Get nvme devices inside /sys/block/ instead of /dev

agent.py

@@ -157,7 +157,7 @@ class ServerData:
             return devices
 
         # Get the list of nvme devices starting with 'nvme'
-        nvme_devices = [device for device in os.listdir('/dev') if device.startswith('nvme')]
+        nvme_devices = [device for device in os.listdir('/sys/block') if device.startswith('nvme')]
 
         for device in nvme_devices:
             device_path = '/dev/' + device
@@ -193,13 +193,14 @@ class ServerData:
         for device in os.listdir('/sys/block'):
             device_path = '/sys/block/{}/device'.format(device)
             size_path = '/sys/block/{}/size'.format(device)
-            if os.path.islink(device_path):
+            if not os.path.islink(device_path):
+                continue
             try:
                 with open(size_path, 'r') as f:
                     size = int(f.read().strip())
                     disk += size
             except Exception:
-                    pass  # Skip the device if any exception occurs
+                pass
 
         disk = disk * 512 // (1024**3)  # convert to GB
         logging.info("RAM: {}MB, Disk: {}GB".format(ram, disk))