== sanity test 413k: QoS mkdir exclude prefixes ========== 21:35:02 (1781228102)
lmv.lustre-clilmv-ffff97e3d37bb800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff97e3d37bb800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff97e3d37bb800.qos_exclude_prefixes=_temporary