== sanity test 413k: QoS mkdir exclude prefixes ========== 02:03:54 (1789452234)
lmv.lustre-clilmv-ffff936ea7bb3800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff936ea7bb3800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff936ea7bb3800.qos_exclude_prefixes=_temporary