== sanity test 413k: QoS mkdir exclude prefixes ========== 02:35:54 (1789454154)
lmv.lustre-clilmv-ffff9bcb89133800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9bcb89133800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9bcb89133800.qos_exclude_prefixes=_temporary