1 files changed, 10 insertions, 2 deletions
diff --git a/auto/init b/auto/init
index 0b33c3bc2..6c52c21a2 100644
--- a/auto/init
+++ b/auto/init
@@ -54,8 +54,16 @@ clean:
 
 upgrade:
 	$NGX_SBIN_PATH -t
+
+	# upgrade compatibility from 0.1.x to 0.2.x
+	cp $NGX_PID_PATH $NGX_PID_PATH.oldbin
+
 	kill -USR2 \`cat $NGX_PID_PATH\`
 	sleep 1
-	test -f $NGX_PID_PATH.newbin
-	kill -WINCH \`cat $NGX_PID_PATH\`
+	test -f $NGX_PID_PATH.oldbin
+
+	# upgrade compatibility from 0.1.x to 0.2.x
+	cp $NGX_PID_PATH $NGX_PID_PATH.newbin
+
+	kill -WINCH \`cat $NGX_PID_PATH.oldbin\`
 END