== sanity test 413k: QoS mkdir exclude prefixes ========== 02:14:21 (1721888061)
lmv.lustre-clilmv-ffff8800b0032000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800b0032000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800b0032000.qos_exclude_prefixes=_temporary