== sanity test 413k: QoS mkdir exclude prefixes ========== 02:44:41 (1744094681)
lmv.lustre-clilmv-ffff8800862bf800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800862bf800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800862bf800.qos_exclude_prefixes=_temporary