== sanity test 413k: QoS mkdir exclude prefixes ========== 23:04:07 (1775876647)
lmv.lustre-clilmv-ffff94b984be3000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff94b984be3000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff94b984be3000.qos_exclude_prefixes=_temporary