Re: [Bug-tar] --sparse is broken on filesystems where small files may have zero blocks

[Paul Eggert]

On 10/29/2013 08:06 AM, Tim Kientzle wrote:
> $ truncate -s 10G file && echo hello >> file
>
> Are there filesystems where the 6 bytes here would be
> stored in the inode?

Not that we know of, so the current code should be OK.
Possibly such a file system could be constructed in the future,
and if so, we'll need to revisit the code.  By then, though, I
hope that tar uses (and OSes support) SEEK_HOLE and SEEK_DATA
which would make the current heuristic obsolete anyway.