== sanity test 413k: QoS mkdir exclude prefixes ========== 07:08:27 (1778929707)
lmv.lustre-clilmv-ffff8f52068a5000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8f52068a5000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8f52068a5000.qos_exclude_prefixes=_temporary