== sanity test 413k: QoS mkdir exclude prefixes ========== 15:42:20 (1790106140)
lmv.lustre-clilmv-ffff8c0094381800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8c0094381800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8c0094381800.qos_exclude_prefixes=_temporary