1. 2015-06-12 08:32:46.426356 7f802bf93700 -1 ErasureCodePluginLrc: The mapping parameter cannot be set when k, m, l are set in {directory=/usr/lib64/ceph/erasure-code,k=4,l=3,layers=[[ "_cDD_cDD", "" ],[ "cDDD____", "" ],[ "____cDDD", "" ],],m=2,mapping=__DD__DD,plugin=lrc,ruleset-failure-domain=osd,ruleset-locality=datacenter,ruleset-root=default}