== sanity test 413k: QoS mkdir exclude prefixes ========== 00:13:16 (1787803996)
lmv.lustre-clilmv-ffff980a2b5aa000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff980a2b5aa000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff980a2b5aa000.qos_exclude_prefixes=_temporary