== sanity test 413k: QoS mkdir exclude prefixes ========== 00:12:57 (1746159177)
lmv.lustre-clilmv-ffff880079ac2800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880079ac2800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880079ac2800.qos_exclude_prefixes=_temporary