== sanity test 413k: QoS mkdir exclude prefixes ========== 22:11:10 (1763349070)
lmv.lustre-clilmv-ffff9b64e6403800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9b64e6403800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9b64e6403800.qos_exclude_prefixes=_temporary