collectd: sqm_collectd: improve error handling

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> (cherry picked from commit 947c85bff0)
2026-04-30 15:38:40 +01:00 · 2020-05-22 12:50:12 +01:00
parent f89580290c
commit 9a38e786f8
2 changed files with 3 additions and 1 deletions
@@ -80,6 +80,8 @@ process_qdisc() {

 	ifc="$1"
 	jsn=$(tc -s -j qdisc show dev "$ifc")
+	[ $? ] || return
+
 	# strip leading & trailing []
 	jsn="${jsn#[}" ; jsn="${jsn%]}"