== sanity test 413k: QoS mkdir exclude prefixes ========== 21:51:09 (1763347869)
lmv.lustre-clilmv-ffff97ddc7da8000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff97ddc7da8000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff97ddc7da8000.qos_exclude_prefixes=_temporary