What are Logical block size and Physical block size and How to find it ?

In simple words, logical block size is the unit used by the  ‘kernel’ for read/write operations.. Physical block sizes are the ones which ‘disk controllers’ use for read/write operations.

Are there any way to display logical/ physical block sizes in your system ?

Yep, there are:

1) Fetch these information from the ‘sysfs’:

‘sda’ is the example device

2) Use ‘blockdev’ command to display the same information.

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