== sanity test 413k: QoS mkdir exclude prefixes ========== 14:27:58 (1785954478)
lmv.lustre-clilmv-ffff9aa6a5bee800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9aa6a5bee800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9aa6a5bee800.qos_exclude_prefixes=_temporary