== sanity test 413k: QoS mkdir exclude prefixes ========== 08:57:15 (1786971435)
lmv.lustre-clilmv-ffff961a43d16000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff961a43d16000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff961a43d16000.qos_exclude_prefixes=_temporary