== sanity test 413k: QoS mkdir exclude prefixes ========== 08:18:25 (1744028305)
lmv.lustre-clilmv-ffff880137385000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880137385000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880137385000.qos_exclude_prefixes=_temporary