== sanity test 413k: QoS mkdir exclude prefixes ========== 14:07:42 (1750183662)
lmv.lustre-clilmv-ffff8800b5917800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800b5917800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800b5917800.qos_exclude_prefixes=_temporary