Re: Detection of Advanced Format drives

[Martin K. Petersen]

>>>>> "Arun" == Arun  <engineerarun@xxxxxxxxx> writes:

Arun> Should I suppose that it is an already available piece of
Arun> information to the userland? 

Yes, in the sysfs locations Mike mentioned:

  /sys/block/foo/queue/physical_block_size

Or you can use the BLKPBSZGET ioctl.


Arun> Or do I need to modify the hdparm/fdisk code to get this piece of
Arun> info?

Recent hdparm versions will also report the right thing:

# hdparm -I /dev/sdc | grep Sector
        Logical  Sector size:                   512 bytes
        Physical Sector size:                  4096 bytes
        Logical Sector-0 offset:                512 bytes

-- 
Martin K. Petersen	Oracle Linux Engineering
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