== sanity test 413k: QoS mkdir exclude prefixes ========== 10:07:25 (1770649645)
lmv.lustre-clilmv-ffff902d20cfc000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff902d20cfc000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff902d20cfc000.qos_exclude_prefixes=_temporary