== sanity test 413k: QoS mkdir exclude prefixes ========== 21:29:29 (1788658169)
lmv.lustre-clilmv-ffff8d8086b40800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8d8086b40800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8d8086b40800.qos_exclude_prefixes=_temporary