== sanity test 413k: QoS mkdir exclude prefixes ========== 23:21:14 (1772425274)
lmv.lustre-clilmv-ffff9a6a08fba000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9a6a08fba000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9a6a08fba000.qos_exclude_prefixes=_temporary