gzipped output padded with zeros

[Koblinger Egmont]

Hi!

When I launch either
  tar c something | gzip > output.tar.gz
or
  tar czf output.tar.gz something

then the result is exactly what I expect.

When I type
  tar cz something > output.tar.gz
or
  tar czf - something > output.tar.gz
I still expect the same result, however, the output is filled up with
zeros to the next multiple of 10240 bytes.

I know that plain 'tar' works with block of 10240 bytes, and so a simple
non-compressed .tar file is a multiple of 10k, but if tar internally
invokes a compressing program, the output should no longer be justified to
these sizes.

(Actually, using bzip2 instead of gzip brings the same problem.)


tar version 1.13.25


bye:
Egmont Koblinger