== sanity test 413k: QoS mkdir exclude prefixes ========== 19:01:31 (1786834891)
lmv.lustre-clilmv-ffff904345209800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff904345209800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff904345209800.qos_exclude_prefixes=_temporary