== sanity test 413k: QoS mkdir exclude prefixes ========== 19:03:09 (1788822189)
lmv.lustre-clilmv-ffff9ac26d511800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9ac26d511800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9ac26d511800.qos_exclude_prefixes=_temporary