Index: cloudsync/common/enums.py
===================================================================
diff -u -rf8d59f1691d5b6850d2fa59d5312c563a42f0d72 -rd2799fd4159bbf89974027611ef0f854a5d94121
--- cloudsync/common/enums.py	(.../enums.py)	(revision f8d59f1691d5b6850d2fa59d5312c563a42f0d72)
+++ cloudsync/common/enums.py	(.../enums.py)	(revision d2799fd4159bbf89974027611ef0f854a5d94121)
@@ -73,6 +73,7 @@
     UI2CS_SEND_DEVICE_STATE = 1006
     UI2CS_SEND_TREATMENT_REPORT = 1007
     UI2CS_REQ_DECOMMISSION = 1009
+    UI2CS_REQ_LOG_ROTATION = 1011
 
     # INCOMING ERROR
     UI2CS_ERROR = 1999
@@ -90,6 +91,7 @@
     CS2UI_REQ_DEVICE_STATE = 2006
     CS2UI_REQ_TX_CODE_DISPLAY = 2008
     CS2UI_REQ_DEVICE_DECOMMISSIONED = 2009
+    CS2UI_REQ_LOG_ROTATION = 2011
 
     # OUTGOING ERROR
     CS2UI_ERROR = 2999
@@ -122,4 +124,5 @@
     CS_SAVE_CREDENTIALS_ERROR = 927
     CS_UNKNOWN_DEVICE_STATE_ERROR = 928
     CS_SAVE_CONFIG_ERROR = 929
+    CS_LOG_ROTATION_ERROR = 930
 
Index: cloudsync/handlers/ui_cs_request_handler.py
===================================================================
diff -u -rf8d59f1691d5b6850d2fa59d5312c563a42f0d72 -rd2799fd4159bbf89974027611ef0f854a5d94121
--- cloudsync/handlers/ui_cs_request_handler.py	(.../ui_cs_request_handler.py)	(revision f8d59f1691d5b6850d2fa59d5312c563a42f0d72)
+++ cloudsync/handlers/ui_cs_request_handler.py	(.../ui_cs_request_handler.py)	(revision d2799fd4159bbf89974027611ef0f854a5d94121)
@@ -232,6 +232,21 @@
                                                          e))
                     self.error_handler.enqueue_error(error=error)
 
+            # CS LOG ROTATION
+            elif InboundMessageIDs.mapped_str_value(message.ID) == InboundMessageIDs.UI2CS_REQ_LOG_ROTATION:
+                self.logger.info("UI2CS_REQ_LOG_ROTATION request received")
+                self.logger.debug("Used Percentage: {0}".format(message.parameters[0]))
+                try:
+                    num_of_files, del_size_mb = helpers_log_rotation(message.parameters[0])
+                    message_body = str(
+                        OutboundMessageIDs.CS2UI_REQ_LOG_ROTATION.value) + f',{num_of_files}' + f',{del_size_mb}'
+                    self.output_channel.enqueue_message(message_body)
+                except Exception as e:
+                    error = Error("{0},2,{1},{2}".format(OutboundMessageIDs.CS2UI_ERROR.value,
+                                                         ErrorIDs.CS_LOG_ROTATION_ERROR.value,
+                                                         e))
+                    self.error_handler.enqueue_error(error=error)
+
             # ERROR MESSAGE RECEIVED FROM UI
             elif InboundMessageIDs.mapped_str_value(message.ID) == InboundMessageIDs.UI2CS_ERROR:
                 error_body = "{0},{1},{2}".format(InboundMessageIDs.UI2CS_ERROR.value, message.size,
Index: cloudsync/utils/globals.py
===================================================================
diff -u -r373fd8d0c900ff129152e13d896e7de2e222b0e7 -rd2799fd4159bbf89974027611ef0f854a5d94121
--- cloudsync/utils/globals.py	(.../globals.py)	(revision 373fd8d0c900ff129152e13d896e7de2e222b0e7)
+++ cloudsync/utils/globals.py	(.../globals.py)	(revision d2799fd4159bbf89974027611ef0f854a5d94121)
@@ -55,6 +55,7 @@
 
 # UI2CS VALUES
 UI2CS_FILE_CHANNELS_PATH = "/media/sd-card/cloudsync"
+UI2CS_FILE_LOG_PATH = "/media/sd-card/cloudsync/log"
 # PATH for running off device
 # UI2CS_FILE_CHANNELS_PATH = "data/busses"
 
Index: cloudsync/utils/helpers.py
===================================================================
diff -u -r373fd8d0c900ff129152e13d896e7de2e222b0e7 -rd2799fd4159bbf89974027611ef0f854a5d94121
--- cloudsync/utils/helpers.py	(.../helpers.py)	(revision 373fd8d0c900ff129152e13d896e7de2e222b0e7)
+++ cloudsync/utils/helpers.py	(.../helpers.py)	(revision d2799fd4159bbf89974027611ef0f854a5d94121)
@@ -6,6 +6,7 @@
 import datetime
 import hashlib
 import socket
+import subprocess
 
 from time import time, sleep
 from typing import Union, Any
@@ -494,3 +495,36 @@
             shutil.rmtree(path_to_delete)
         else:
             raise FileNotFoundError(f"{path_to_delete} not found or not a directory!")
+
+
+def helpers_log_rotation(rotation_pct):
+    cs_log_pct = rotation_pct / 100
+    num_files_deleted = 0
+    # Total sd stats
+    sd_total_bytes, sd_used_bytes, sd_free_bytes = shutil.disk_usage(UI2CS_FILE_CHANNELS_PATH)
+    # Cloudsync log stats
+    cs_used_bytes = int(subprocess.check_output(['du', '-bsx', UI2CS_FILE_CHANNELS_PATH]).split()[0].decode('utf-8'))
+    total_deleted_size = cs_used_bytes
+    # Retrieve file list
+    f = []
+    for subdir, dir, files in os.walk(UI2CS_FILE_LOG_PATH):
+        for file in files:
+            f.append(os.path.join(UI2CS_FILE_LOG_PATH, file))
+
+    # Sorted with oldest modified first.
+    f.sort(key=lambda x: os.path.getmtime(x))
+
+    if len(f) > 1:
+        while (cs_used_bytes / sd_used_bytes) <= cs_log_pct:
+            file_to_remove = f[0]
+            os.remove(file_to_remove)
+            num_files_deleted += 1
+            f.pop(0)
+            cs_used_bytes = int(
+                subprocess.check_output(['du', '-bsx', UI2CS_FILE_CHANNELS_PATH]).split()[0].decode('utf-8'))
+        total_deleted_size = total_deleted_size - cs_used_bytes
+    else:
+        total_deleted_size = 0
+        g_utils.logger.info("No files Removed.")
+
+    return num_files_deleted, total_deleted_size