== sanity test 413k: QoS mkdir exclude prefixes ========== 22:22:41 (1767324161)
lmv.lustre-clilmv-ffff9814ccde7800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9814ccde7800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9814ccde7800.qos_exclude_prefixes=_temporary