== sanity test 413k: QoS mkdir exclude prefixes ========== 16:16:04 (1790108164)
lmv.lustre-clilmv-ffff984638810800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff984638810800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff984638810800.qos_exclude_prefixes=_temporary