== sanity test 413k: QoS mkdir exclude prefixes ========== 09:39:09 (1787837949)
lmv.lustre-clilmv-ffff8bad1fe1d800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8bad1fe1d800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8bad1fe1d800.qos_exclude_prefixes=_temporary