== sanity test 413k: QoS mkdir exclude prefixes ========== 10:17:00 (1775225820)
lmv.lustre-clilmv-ffff94312b923000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff94312b923000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff94312b923000.qos_exclude_prefixes=_temporary