== sanity test 413k: QoS mkdir exclude prefixes ========== 21:32:44 (1768012364)
lmv.lustre-clilmv-ffff97deb843d000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff97deb843d000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff97deb843d000.qos_exclude_prefixes=_temporary