== sanity test 413k: QoS mkdir exclude prefixes ========== 05:33:17 (1789032797)
lmv.lustre-clilmv-ffff97f1b1777000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff97f1b1777000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff97f1b1777000.qos_exclude_prefixes=_temporary