== sanity test 413k: QoS mkdir exclude prefixes ========== 23:18:41 (1789183121)
lmv.lustre-clilmv-ffff93ed31050000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff93ed31050000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff93ed31050000.qos_exclude_prefixes=_temporary