== sanity test 413k: QoS mkdir exclude prefixes ========== 19:46:10 (1786837570)
lmv.lustre-clilmv-ffff9cbca7237000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9cbca7237000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9cbca7237000.qos_exclude_prefixes=_temporary