virtlogd: increase max file size to 2 MB

People debugging guest OS boot processes and reported that
the default 128 KB size is too small to capture an entire
boot up sequence. Increase the default size to 2 MB which
should allow capturing a full boot up even with verbose
debugging.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

src/logging/log_daemon_config.c

@@ -128,7 +128,7 @@ virLogDaemonConfigNew(bool privileged ATTRIBUTE_UNUSED)
         return NULL;
 
     data->max_clients = 1024;
-    data->max_size = 128 * 1024;
+    data->max_size = 1024 * 1024 * 2;
     data->max_backups = 3;
 
     return data;

src/logging/virtlogd.conf

@@ -59,8 +59,8 @@
 #max_clients = 1024
 
 
-# Maximum file size before rolling over. Defaults to 128 KB
-#max_size = 131072
+# Maximum file size before rolling over. Defaults to 2 MB
+#max_size = 2097152
 
 # Maximum number of backup files to keep. Defaults to 3,
 # not including the primary active file