How to get total disk read/write in bytes per hdd device?

for example if i have sda, sdb, and sdc, is there any file on /proc that i could use similar to /proc/net/dev for networking?

up vote 3 down vote accepted

found it..

/proc/diskstats

the 6th and 10th columns are respectively read blocks and write blocks, to get the value in bytes, multiply with 512..

/sys/block/sdX/stat

the 3rd and 7th values are respectively the same as above

You can use this command to see disk Read and Write for specific time. like for 1min use:

# dstat -tdD total 60

Value after total is in seconds.

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