== sanity test 413k: QoS mkdir exclude prefixes ========== 09:03:17 (1775134997)
lmv.lustre-clilmv-ffff995efa036000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff995efa036000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff995efa036000.qos_exclude_prefixes=_temporary