== sanity test 413k: QoS mkdir exclude prefixes ========== 08:58:51 (1789304331)
lmv.lustre-clilmv-ffff97c698e41000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff97c698e41000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff97c698e41000.qos_exclude_prefixes=_temporary