== sanity test 413k: QoS mkdir exclude prefixes ========== 23:56:30 (1770440190)
lmv.lustre-clilmv-ffff9531872a9800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9531872a9800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9531872a9800.qos_exclude_prefixes=_temporary