== sanity test 413k: QoS mkdir exclude prefixes ========== 00:06:35 (1787371595)
lmv.lustre-clilmv-ffff980a4556a000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff980a4556a000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff980a4556a000.qos_exclude_prefixes=_temporary