[root@localhost]# vgcreate myvol /dev/hda8
  /dev/nbd0: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd0: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd0: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd0: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd0: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd0: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd1: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd1: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd1: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd1: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd1: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd2: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd2: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd2: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd2: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd2: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd3: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd3: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd3: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd3: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd3: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd4: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd4: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd4: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd4: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd4: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd5: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd5: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd5: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd5: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd5: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd6: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd6: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd6: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd6: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd6: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd7: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd7: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd7: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd7: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd7: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd8: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd8: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd8: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd8: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd8: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd9: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd9: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd9: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd9: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd9: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd10: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd10: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd10: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd10: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd10: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd11: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd11: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd11: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd11: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd11: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd12: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd12: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd12: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd12: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd12: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd13: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd13: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd13: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd13: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd13: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd14: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd14: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd14: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd14: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd14: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd15: read failed after 0 of 4096 at 2199022141440: Input/output error
  /dev/nbd15: read failed after 0 of 4096 at 2199022198784: Input/output error
  /dev/nbd15: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd15: read failed after 0 of 4096 at 4096: Input/output error
  /dev/nbd15: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd0: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd1: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd2: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd3: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd4: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd5: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd6: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd7: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd8: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd9: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd10: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd11: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd12: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd13: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd14: read failed after 0 of 4096 at 0: Input/output error
  /dev/nbd15: read failed after 0 of 4096 at 0: Input/output error
  Volume group "myvol" successfully created