== sanity test 413k: QoS mkdir exclude prefixes ========== 01:05:53 (1787893553)
lmv.lustre-clilmv-ffff911667afa000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff911667afa000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff911667afa000.qos_exclude_prefixes=_temporary