blockdev -v --getsz --getss --getpbsz --getbsz --getsize64 /dev/vda3
31457280
get logical block (sector) size: 512
get physical block (sector) size: 512
get blocksize: 4096
get size in bytes: 16106127360
blockdev -v --getsz --getss --getpbsz --getbsz --getsize64 /dev/vda4
31457280
get logical block (sector) size: 512
get physical block (sector) size: 512
get blocksize: 4096
get size in bytes: 16106127360
blockdev -v --getsz --getss --getpbsz --getbsz --getsize64