== sanity test 413k: QoS mkdir exclude prefixes ========== 21:06:31 (1787706391)
lmv.lustre-clilmv-ffff9156046f8000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9156046f8000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9156046f8000.qos_exclude_prefixes=_temporary