== sanity test 413k: QoS mkdir exclude prefixes ========== 12:41:33 (1787503293)
lmv.lustre-clilmv-ffff936892da7800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff936892da7800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff936892da7800.qos_exclude_prefixes=_temporary