Write debug/trace log files separately to prevent trace from quickly rolling over debug.

src/NzbDrone.Common/Instrumentation/NzbDroneLogger.cs

@@ -102,26 +102,35 @@ namespace NzbDrone.Common.Instrumentation
         const string FILE_LOG_LAYOUT = @"${date:format=yy-M-d HH\:mm\:ss.f}|${level}|${logger}|${message}${onexception:inner=${newline}${newline}${exception:format=ToString}${newline}}";
 
         private static void RegisterAppFile(IAppFolderInfo appFolderInfo)
+        {
+            RegisterAppFile(appFolderInfo, "appFileInfo", "sonarr.txt", 5);
+            RegisterAppFile(appFolderInfo, "appFileDebug", "sonarr.debug.txt", 50);
+            RegisterAppFile(appFolderInfo, "appFileTrace", "sonarr.trace.txt", 50);
+        }
+
+        private static LoggingRule RegisterAppFile(IAppFolderInfo appFolderInfo, string name, string fileName, int maxArchiveFiles)
         {
             var fileTarget = new NzbDroneFileTarget();
 
-            fileTarget.Name = "rollingFileLogger";
-            fileTarget.FileName = Path.Combine(appFolderInfo.GetLogFolder(), "nzbdrone.txt");
+            fileTarget.Name = name;
+            fileTarget.FileName = Path.Combine(appFolderInfo.GetLogFolder(), fileName);
             fileTarget.AutoFlush = true;
             fileTarget.KeepFileOpen = false;
             fileTarget.ConcurrentWrites = false;
             fileTarget.ConcurrentWriteAttemptDelay = 50;
             fileTarget.ConcurrentWriteAttempts = 10;
             fileTarget.ArchiveAboveSize = 1024000;
-            fileTarget.MaxArchiveFiles = 5;
+            fileTarget.MaxArchiveFiles = maxArchiveFiles;
             fileTarget.EnableFileDelete = true;
             fileTarget.ArchiveNumbering = ArchiveNumberingMode.Rolling;
             fileTarget.Layout = FILE_LOG_LAYOUT;
 
             var loggingRule = new LoggingRule("*", LogLevel.Trace, fileTarget);
 
-            LogManager.Configuration.AddTarget("appfile", fileTarget);
+            LogManager.Configuration.AddTarget(name, fileTarget);
             LogManager.Configuration.LoggingRules.Add(loggingRule);
+
+            return loggingRule;
         }
 
         private static void RegisterUpdateFile(IAppFolderInfo appFolderInfo)

src/NzbDrone.Core/Instrumentation/ReconfigureLogging.cs

@@ -28,24 +28,24 @@ namespace NzbDrone.Core.Instrumentation
             var rules = LogManager.Configuration.LoggingRules;
 
             //Console
-            var consoleLoggerRule = rules.SingleOrDefault(s => s.Targets.Any(t => t is ColoredConsoleTarget));
-
-            if (consoleLoggerRule != null)
-            {
-                consoleLoggerRule.EnableLoggingForLevel(LogLevel.Trace);
-                SetMinimumLogLevel(consoleLoggerRule, minimumLogLevel);
-            }
+            SetMinimumLogLevel(rules, "consoleLogger", minimumLogLevel);
 
             //Log Files
-            var rollingFileLoggerRule = rules.Single(s => s.Targets.Any(t => t is NzbDroneFileTarget));
-            rollingFileLoggerRule.EnableLoggingForLevel(LogLevel.Trace);
-            
-            SetMinimumLogLevel(rollingFileLoggerRule, minimumLogLevel);
-            SetMaxArchiveFiles(rollingFileLoggerRule, minimumLogLevel);
+            SetMinimumLogLevel(rules, "appFileInfo", minimumLogLevel <= LogLevel.Info ? LogLevel.Info : LogLevel.Off);
+            SetMinimumLogLevel(rules, "appFileDebug", minimumLogLevel <= LogLevel.Debug ? LogLevel.Debug : LogLevel.Off);
+            SetMinimumLogLevel(rules, "appFileTrace", minimumLogLevel <= LogLevel.Trace ? LogLevel.Trace : LogLevel.Off);
 
             LogManager.ReconfigExistingLoggers();
         }
 
+        private void SetMinimumLogLevel(IList<LoggingRule> rules, string target, LogLevel minimumLogLevel)
+        {
+            foreach (var rule in rules.Where(v => v.Targets.Any(t => t.Name == target)))
+            {
+                SetMinimumLogLevel(rule, minimumLogLevel);
+            }
+        }
+
         private void SetMinimumLogLevel(LoggingRule rule, LogLevel minimumLogLevel)
         {
             foreach (var logLevel in GetLogLevels())
@@ -62,23 +62,6 @@ namespace NzbDrone.Core.Instrumentation
             }
         }
 
-        private void SetMaxArchiveFiles(LoggingRule rule, LogLevel minimumLogLevel)
-        {
-            var target = rule.Targets.Single(t => t is NzbDroneFileTarget) as NzbDroneFileTarget;
-
-            if (target == null) return;
-
-            if (minimumLogLevel >= LogLevel.Info)
-            {
-                target.MaxArchiveFiles = 5;
-            }
-
-            else
-            {
-                target.MaxArchiveFiles = 50;
-            }
-        }
-
         private List<LogLevel> GetLogLevels()
         {
             return new List<LogLevel>