== sanity test 413k: QoS mkdir exclude prefixes ========== 05:18:46 (1752484726)
lmv.lustre-clilmv-ffff94f4cad35000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff94f4cad35000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff94f4cad35000.qos_exclude_prefixes=_temporary