== sanity test 413k: QoS mkdir exclude prefixes ========== 06:13:30 (1739531610)
lmv.lustre-clilmv-ffff8800b6cef000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800b6cef000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800b6cef000.qos_exclude_prefixes=_temporary