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I've been studying about diskstats lately, and I get that the amount of hdd read comes in sectors. But in most places I've noticed that there exists a slight misunderstanding about sectors and blocks. So, what type is this sector which is read by the diskstats? Can I figure it out with:

dumpe2fs /dev/sda7 | grep 'Block size'
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blocks are logical "groups" or sequences of space. Usually 1 block = 4096 bytes. They represent the smallest amount of space that can be reserved for a file. ie. you have a 12 byte file, your filesystem is still going to reserve a whole block (4096 bytes default for ext3)

sectors refers to a physical ring on the HDD (think of the grooves on a vinyl record)

To answer your question the command you ran will show the block size of that partition.

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Thanks, h3rrmiller, you answer my question. I would vote in your answer, but i have not my 15 point to do it. –  lucastamoios Nov 1 '12 at 15:01
    
@lucastamoios you can still accept my answer (check mark) –  h3rrmiller Nov 1 '12 at 15:28

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