capacity     operations    bandwidth
pool        alloc   free   read  write   read  write
----------  -----  -----  -----  -----  -----  -----
ost0         634G  35.6T      0    553    734   539M
ost0         642G  35.6T  1.34K     61  1.33G  58.1M
ost0         642G  35.6T  1.54K      0  1.51G      0
ost0         642G  35.6T  1.53K      0  1.51G      0
ost0         642G  35.6T  1.54K      0  1.52G      0
ost0         642G  35.6T  1.53K      0  1.51G      0