== sanity test 413k: QoS mkdir exclude prefixes ========== 01:02:00 (1746162120)
lmv.lustre-clilmv-ffff880096f1c800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880096f1c800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880096f1c800.qos_exclude_prefixes=_temporary