== sanity test 413k: QoS mkdir exclude prefixes ========== 11:35:50 (1786808150)
lmv.lustre-clilmv-ffff9059c9ac9000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9059c9ac9000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9059c9ac9000.qos_exclude_prefixes=_temporary