capacity     operations    bandwidth
pool        alloc   free   read  write   read  write
----------  -----  -----  -----  -----  -----  -----
ost0         161G  36.1T     60    520   243K   144M
ost0         161G  36.1T    879      0   856M      0
ost0         161G  36.1T    845      0   811M      0