== sanity test 413k: QoS mkdir exclude prefixes ========== 08:03:55 (1768309435)
lmv.lustre-clilmv-ffffa03567795800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffffa03567795800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffffa03567795800.qos_exclude_prefixes=_temporary