========
DEVICE
========
Device-mapper device:         usb_backup
Origin size:                  1000203091968 bytes
Discards:                     no_discard_passdown
========
CACHE
========
Cache Size:                   53687091200 bytes
Cache Usage:                  15001583616 bytes
Cache Usage:                  27 %
Cache Read Hit:               1024076
Cache Read Miss:              215372
Cache Write Hit:              170475
Cache Write Miss:             163357
Cache Dirty:                  0 bytes
Cache Block Size:             131072 bytes
Cache Promotions:             95835
Cache Demotions:              0
Cache Migration Threshold:    1048576 bytes
Cache Mode:                   rw
Cache Policy:                 writethrough
Cache Status:                 -
========
METADATA
========
Metadata Size:                16777216 bytes
Metadata Usage:               5005312 bytes
Metadata Usage:               29 %