== sanity test 413k: QoS mkdir exclude prefixes ========== 03:52:07 (1746085927)
lmv.lustre-clilmv-ffff880137305000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880137305000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880137305000.qos_exclude_prefixes=_temporary