Re: [Bug-tar] Detection of sparse files is broken on btrfs

[Mark H Weaver]

Hi Joerg,

Joerg Schilling <address@hidden> writes:

> Mark H Weaver <address@hidden> wrote:
>
>> I just got bitten by the same problem reported back in July 2016:
>>
>>   https://lists.gnu.org/archive/html/bug-tar/2016-07/msg00000.html
>>
>> At the time, Joerg Schilling unilaterally refused to fix the bug,
>> claiming that Btrfs was broken and violated POSIX, although when asked
>> for a reference to back that up he never provided one.  Everyone else in
>> the thread disagreed with him, but the bug never got fixed.
>
> Of course I provided that reference by pointing to the POSIX standard.

Please quote the relevant excerpts regarding the constraints on
st_blocks in relation to the file contents, along with links to the
official online text containing those excerpts.

      Thanks,
        Mark