== sanity test 413k: QoS mkdir exclude prefixes ========== 16:38:30 (1787863110)
lmv.lustre-clilmv-ffff90fba00fe800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff90fba00fe800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff90fba00fe800.qos_exclude_prefixes=_temporary