== sanity test 413k: QoS mkdir exclude prefixes ========== 01:48:16 (1721886496)
lmv.lustre-clilmv-ffff880136447000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880136447000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880136447000.qos_exclude_prefixes=_temporary