== sanity test 413k: QoS mkdir exclude prefixes ========== 05:03:45 (1738490625)
lmv.lustre-clilmv-ffff880080496000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880080496000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880080496000.qos_exclude_prefixes=_temporary