sg_utils

• Query on page 83 for information

  # sg_inq --vpd --page=0x83 <block_device>
  

  e.g., sg_inq –vpd –page=0x83 /dev/sdi

• Query for mode sense pages

  # sg_modes --all <block_device>
  

  e.g., sg_modes –all /dev/sdi

• Fetch the number of blocks and the individual block size for disks

  # sg_readcap <block_device>
  

  e.g., sg_readcap <block_device>

• Send write same command

  # sg_write_same --16 --lba=<logical_block_address> <block_device>
  

  e.g., sg_write_same –16 –lba=0 /dev/sdc