== sanity test 413k: QoS mkdir exclude prefixes ========== 03:22:02 (1775200922)
lmv.lustre-clilmv-ffff9f01d14da000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9f01d14da000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9f01d14da000.qos_exclude_prefixes=_temporary