== sanity test 413k: QoS mkdir exclude prefixes ========== 14:35:19 (1785782119)
lmv.lustre-clilmv-ffff980aed465800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff980aed465800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff980aed465800.qos_exclude_prefixes=_temporary