== sanity test 413k: QoS mkdir exclude prefixes ========== 20:25:59 (1787703959)
lmv.lustre-clilmv-ffff99cfd0aee800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff99cfd0aee800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff99cfd0aee800.qos_exclude_prefixes=_temporary