LVM doubt

[rajesh73]

what is the difference between character device and block device

when creating the VG. Whihc state we can use device and character device. please explain i confused two character files

[Dennis Handly]

>what is the difference between character device and block device

See glossary(9):

block special file
      A special file associated with a mass storage device (such as a hard
      disk or tape cartridge drive) that transfers data in multiple-byte
      blocks, rather than by series of individual bytes (see character
      special file).  Block special files can be mounted.  A block special
      file provides access to the device where hardware characteristics of
      the device are not visible.

character special file
      A special file associated with I/O devices that transfer data byte-by-byte.  Other byte-mode I/O devices

      include printers, nine-track magnetic tape drives, and disk drives when accessed in "raw" mode (see
      raw disk).  A character special file has no predefined structure.

[rajesh73]

thanks for your reply