On Wed, Jul 18, 2018 at 8:37 PM Terry Bowling <tbowling(a)redhat.com> wrote:
Regarding these two questions:
>> Are there any concerns about such change?
>> I believe that >90% users wouldn't notice anything as it's related to
the history database only.
>
> On Wed, Jul 18, 2018 at 10:01 AM Igor Gnatenko
<ignatenkobrain(a)fedoraproject.org> wrote:
> Since we've changed the database entirely, what's the point of keeping same
algorithm for calculating checksum?
> On Wed, Jul 18, 2018 at 9:34 AM Daniel P. Berrangé <berrange(a)redhat.com>
wrote:
> What's the benefit in changing to be compatible with YUM as opposed
> to stickin with current alogorithm ?
>
> Surely if we don't change it, even fewer users will notice that DNF's
> behaviour is different from YUM's, since DNF has been the default for
> many releases now.
>
> I could understand the motiviation to stay compatible with YUM if we
> were only just about to switch Fedora from YUM to DNF, but time is
> way in the past now. Shouldn't we optimize for the fact that DNF is
> the more widely deployed & used tool, and thus not worry about
> YUM compatibility in respect of the history DB ?
It is true that going forward in the Fedora world it matters less. It is more of an
impact for yum-3 compatibility as yum4/dnf is being considered in the RHEL7/CentOS7
userspace environments as described at
https://blog.centos.org/2018/04/yum4-dnf-for-centos-7-updates/
Currently yum version 3 and what the proof-of-concept project is calling yum4 work very
well together side by side. Users can safely switch back and forth. The major problem is
yum/dnf histories being different and the rpmdb checksum difference is a blocker for
resolving the history compatibility.
So think of this as an effort to bring package management parity between Fedora, RHEL 7,
& CentOS7, as the latter two still have a long life ahead of them.
Is there a reason why we can't change YUM to match the DNF behavior?
IMO, the YUM behavior is nonsense and isn't even a valid package
identifier.
--
真実はいつも一つ!/ Always, there's only one truth!