== sanity test 413k: QoS mkdir exclude prefixes ========== 10:46:22 (1789137982)
lmv.lustre-clilmv-ffff9f23079c2000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9f23079c2000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9f23079c2000.qos_exclude_prefixes=_temporary