== sanity test 413k: QoS mkdir exclude prefixes ========== 00:23:47 (1787199827)
lmv.lustre-clilmv-ffff899cc0480800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff899cc0480800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff899cc0480800.qos_exclude_prefixes=_temporary