kvm vm guest 4k disk

 

 


For Linux this would be the value returned by the

BLKSSZGET (logical_block_size) ioctl and describes the smallest units for disk I/O.

BLKPBSZGET (physical_block_size) ioctl and describes the disk's hardware sector size which can be relevant for the alignment of disk data.

<disk type='block' device='disk'>
  ...
  <blockio logical_block_size='512' physical_block_size='4096'/>
</disk>