== sanity test 413k: QoS mkdir exclude prefixes ========== 03:06:43 (1769760403)
lmv.lustre-clilmv-ffff9f078859a000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9f078859a000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9f078859a000.qos_exclude_prefixes=_temporary