== sanity test 413k: QoS mkdir exclude prefixes ========== 16:14:41 (1787861681)
lmv.lustre-clilmv-ffff9693389e5000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9693389e5000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9693389e5000.qos_exclude_prefixes=_temporary