== sanity test 413k: QoS mkdir exclude prefixes ========== 14:11:15 (1777054275)
lmv.lustre-clilmv-ffff89cba1e32800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff89cba1e32800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff89cba1e32800.qos_exclude_prefixes=_temporary