== sanity test 413k: QoS mkdir exclude prefixes ========== 11:40:42 (1789141242)
lmv.lustre-clilmv-ffff8e71b0e03000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8e71b0e03000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8e71b0e03000.qos_exclude_prefixes=_temporary