capacity     operations    bandwidth
pool        alloc   free   read  write   read  write
----------  -----  -----  -----  -----  -----  -----
ost0        1.78M  40.0T      0     11      0  38.4K
ost0         111G  39.9T      0  1.52K    819  1.48G
ost0         232G  39.8T      0  1.53K     2K  1.50G
ost0         353G  39.7T      0  1.53K  2.07K  1.49G
ost0         489G  39.5T      0  1.52K  2.47K  1.48G
ost0         610G  39.4T      0  1.54K  2.34K  1.50G