== sanity test 413k: QoS mkdir exclude prefixes ========== 02:39:46 (1721889586)
lmv.lustre-clilmv-ffff88012f88f000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012f88f000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012f88f000.qos_exclude_prefixes=_temporary