Cannot create a larger file than 16GB

Issue

• I cannot create a large file more than 16GB.

  $ for size in $(seq 1 17); do echo "file size = ${size}G"; dd if=/dev/zero of=/mnt/test bs=1G count=$size; [ $? -ne 0 ] && break; rm -f /mnt/test; done; rm -f /mnt/test
  file size = 1G
  1+0 records in
  1+0 records out
  1073741824 bytes (1.1 GB) copied, 28.0256 seconds, 38.3 MB/s
  <snip>
  file size = 15G
  15+0 records in
  15+0 records out
  16106127360 bytes (16 GB) copied, 295.238 seconds, 54.6 MB/s
  file size = 16G
  16+0 records in
  16+0 records out
  17179869184 bytes (17 GB) copied, 340.058 seconds, 50.5 MB/s
  file size = 17G
  File size limit exceeded
  

• ulimit doesn't cause it.

  $ ulimit -f
  unlimited