`cp --sparse=always`에는 어떤 단점이 있나요?

이유가 있나요?아니요--sparse=always모든 통화에 사용하시겠습니까 cp?

info cp설명하다:

‘--sparse=WHEN’
     A “sparse file” contains “holes”—a sequence of zero bytes that does
     not occupy any physical disk blocks; the ‘read’ system call reads
     these as zeros.  This can both save considerable disk space and
     increase speed, since many binary files contain lots of consecutive
     zero bytes.  By default, ‘cp’ detects holes in input source files
     via a crude heuristic and makes the corresponding output file
     sparse as well.  Only regular files may be sparse.

    The WHEN value can be one of the following:

...

    ‘always’
          For each sufficiently long sequence of zero bytes in the input
          file, attempt to create a corresponding hole in the output
          file, even if the input file does not appear to be sparse.
          This is useful when the input file resides on a file system
          that does not support sparse files (for example, ‘efs’ file
          systems in SGI IRIX 5.3 and earlier), but the output file is
          on a type of file system that does support them.  Holes may be
          created only in regular files, so if the destination file is
          of some other type, ‘cp’ does not even try to make it sparse.

또한 다음과 같이 말합니다.

[...] 다음 별칭을 사용하면 "cp"는 파일 시스템에서 지원하는 최소 공간을 사용합니다.

alias cp='cp --reflink=auto --sparse=always'

--sparse=always왜 기본값 이 아닌가 ?