== sanity test 413k: QoS mkdir exclude prefixes ========== 07:02:36 (1788519756)
lmv.lustre-clilmv-ffff967502e92000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff967502e92000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff967502e92000.qos_exclude_prefixes=_temporary