xfs_mkfile - create an XFS file
xfs_mkfile [ -v ] [ -n ] size[k|b|m|g] filename ...
xfs_mkfile creates one or more files. The file is padded with zeroes by
default. The default size is in bytes, but it can be flagged as
kilobytes, blocks, megabytes, or gigabytes with the k, b, m, or g
-v Verbose. Report the names and sizes of created files.
-n No bytes. Create a holey file - that is, do not write out any
data, just seek to end of file and write a block.