Re: unusual error from gzip recently [source found]

["George N. White III" <gnwiii@xxxxxxxxx>]

On Sun, 1 Aug 2021 at 23:31, Eyal Lebedinsky <fedora@xxxxxxxxxxxxxx> wrote:

On 02/08/2021 08.53, Cameron Simpson wrote:
> On 01Aug2021 08:40, George N. White III <gnwiii@xxxxxxxxx> wrote:
>> gzip can store the file date in the archive, and (per
>> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=950519)
>> supports dates from 1970-01-01 00:00:01 UTC through 2106-02-07 06:28:15
>> UTC.  As the Debian
>> bug report notes, gzip may be hitting a limit in the kernel or a library.
>
> Likely gzip has a fixed size binary field for the timestamp, which some
> timestamp value from afio's data is exceeding.
>
> Can you use gzip's -n option?
>
>       -n, -‐no‐name     This option stops the filename and timestamp from
>                         being stored in the output file.
>
> That might mangle dates on restore, depending on how afio does that.
>
> Cheers,
> Cameron Simpson <cs@xxxxxxxxxx>

Took me a while but in the end I tracked down some of the files.

        $ ls -l /usr/share/licenses/mdevctl/COPYING --full-time
        -rw-r--r-- 1 root root 26530 1970-01-01 10:00:00.000000000 +1000 /usr/share/licenses/mdevctl/COPYING

And the proof
        $ gzip -c /usr/share/licenses/mdevctl/COPYING >gzip-test.1.gz
        gzip: /usr/share/licenses/mdevctl/COPYING: warning: file timestamp out of range for gzip format

So I guess that some recent gzip or lib has an issue here. '>' vs '>=' maybe?

Dragons hang out at edge cases.  How did  /usr/share/licenses/mdevctl/COPYING get that timestamp?    I have (Fedora 33):

~ % ls -l /usr/share/licenses/mdevctl/COPYING --full-time
-rw-r--r--. 1 root root 26530 2021-06-10 13:49:09.000000000 -0300 /usr/share/licenses/mdevctl/COPYING

--

George N. White III

_______________________________________________
users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure