== sanity test 413k: QoS mkdir exclude prefixes ========== 04:09:27 (1779696567)
lmv.lustre-clilmv-ffff8886488e4800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8886488e4800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8886488e4800.qos_exclude_prefixes=_temporary