== sanity test 413k: QoS mkdir exclude prefixes ========== 03:00:52 (1788850852)
lmv.lustre-clilmv-ffff94aec4fed000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff94aec4fed000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff94aec4fed000.qos_exclude_prefixes=_temporary