Linux 3.10.0-862.14.4.el7.x86_64 (...) avg-cpu: %user %nice %system %iowait %steal %idle 1.95 0.00 0.78 0.26 0.00 97.00 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 12.65 249.33 614.33 195118154 480758520 sdb 65.94 4432.53 2670.14 3468771636 2089574176 sdc 53.56 3665.92 2283.67 2868849056 1787140480 dm-0 0.10 0.98 0.52 766508 407416 dm-1 0.00 0.00 0.00 3188 0 dm-2 0.00 0.00 0.00 3732 2048 dm-3 12.75 248.30 613.81 194315020 480346972 dm-4 139.25 4432.52 2670.14 3468770988 2089574176 dm-5 115.83 3665.92 2283.67 2868848408 1787140480