== sanity test 413k: QoS mkdir exclude prefixes ========== 01:26:34 (1781241994)
lmv.lustre-clilmv-ffff894e90701000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff894e90701000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff894e90701000.qos_exclude_prefixes=_temporary