Hi Mitchell, Yes I can see the log. [ 1.226296] device-mapper: multipath service-time: version 0.3.0 loaded [ 1.277039] device-mapper: table: 252:1: multipath: error getting device (-EBUSY) [ 1.277086] device-mapper: ioctl: error adding target to table [ 1.300407] bcache: bch_journal_replay() journal replay done, 0 keys in 1 entries, seq 1 [ 1.301650] bcache: register_cache() registered cache device sdd [ 1.301748] bcache: register_cache_worker() error /dev/sdc: fail to register cache device