=== modified file 'sv.ssh-master.check'
--- sv.ssh-master.check	2013-05-21 06:10:26 +0000
+++ sv.ssh-master.check	2013-05-04 12:54:56 +0000
@@ -1,3 +1,3 @@
 #!/bin/zsh
 source ./args
-ssh -O check "${args[@]}" &>/dev/null
+ssh -O check "${args[@]}"

=== modified file 'usv.bg'
--- usv.bg	2013-05-21 06:10:26 +0000
+++ usv.bg	2013-05-15 21:13:18 +0000
@@ -1,28 +1,9 @@
 #!/bin/zsh
 D=${1:-~/service}
 [[ -d $D ]] || { echo 'invalid service directory:' $D; exit 1 }
-
-DSEC_WAIT=10
-
+touch $D/lock
 if [[ -o xtrace ]]; then
-	usv.check() { zsh -x ${commands[usv.check]} "$@" }
+	exec flock -w 5 $D/lock zsh -x ${commands[usv.bg_locked]} "$@"
+else
+	exec flock -w 5 $D/lock usv.bg_locked "$@"
 fi
-
-touch $D/lock
-(
-	flock -w 5 3
-	if ! usv.check $D; then
-		(
-			flock -u $D/lock
-			setsid usv.run $D 2>&1 | logger -t svdir.${${D:t}##.}
-		)  3</dev/null &!
-		while ! usv.check $D; do
-			DSEC_WAIT=$(( DSEC_WAIT - 1 ))
-			sleep '0.1s'
-			if ! (($DSEC_WAIT)); then
-				print >&2 "failed to spawn runsvdir in: $D"
-				exit 1
-			fi
-		done
-	fi
-) 3<$D/lock

=== added file 'usv.bg_locked'
--- usv.bg_locked	1970-01-01 00:00:00 +0000
+++ usv.bg_locked	2013-05-09 11:23:12 +0000
@@ -0,0 +1,19 @@
+#!/bin/zsh
+D=${1:-~/service}
+[[ -d $D ]] || { echo 'invalid service directory:' $D; exit 1 }
+DSEC_WAIT=10
+if [[ -o xtrace ]]; then
+	usv.check() { zsh -x ${commands[usv.check]} "$@" }
+fi
+if ! usv.check $D; then
+	setsid usv.run $D 2>&1 | logger -t svdir.${${D:t}##.} &!
+	while ! usv.check $D; do
+		DSEC_WAIT=$(( DSEC_WAIT - 1 ))
+		sleep '0.1s'
+		if ! (($DSEC_WAIT)); then
+			print >&2 "failed to spawn runsvdir in: $D"
+			exit 1
+		fi
+	done
+fi
+