== sanity test 413k: QoS mkdir exclude prefixes ========== 11:11:21 (1788880281)
lmv.lustre-clilmv-ffff9c7e56e33000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9c7e56e33000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9c7e56e33000.qos_exclude_prefixes=_temporary