Diskio plugin make Glances 4.5.0.5 crash on OpenBSD #3452

Author: nicolargo

glances/plugins/diskio/__init__.py

@@ -128,12 +128,12 @@ def update_latency(self, stats):
         # Compute read/write latency if we have the rate stats
         for stat in stats:
             # Compute read/write latency if we have the rate stats
-            if stat.get("read_count_rate_per_sec", 0) > 0:
+            if 'read_time_rate_per_sec' in stat and stat.get("read_count_rate_per_sec", 0) > 0:
                 stat["read_latency"] = int(stat["read_time_rate_per_sec"] / stat["read_count_rate_per_sec"])
             else:
                 stat["read_latency"] = 0
 
-            if stat.get("write_count_rate_per_sec", 0) > 0:
+            if 'write_time_rate_per_sec' in stat and stat.get("write_count_rate_per_sec", 0) > 0:
                 stat["write_latency"] = int(stat["write_time_rate_per_sec"] / stat["write_count_rate_per_sec"])
             else:
                 stat["write_latency"] = 0

glances/plugins/plugin/model.py

@@ -1196,6 +1196,9 @@ def compute_rate(self, stat, stat_previous):
             # 2) compute the _rate_per_sec
             # 3) set the original field to the delta between the current and the previous value
             for field in self.fields_description:
+                # Check if the field exist (avoid error on some OS where some fields are not available)
+                if field not in stat:
+                    continue
                 # For all the field with the rate=True flag
                 # if 'rate' in self.fields_description[field] and self.fields_description[field]['rate'] is True:
                 if self.fields_description[field].get('rate', False):