deltarpms save almost no space

[Andre Robatino]

Deltarpms used to save about 75% of update size, lately it's almost nothing, since
most packages don't get drpms. In the latest F25 update, for example, even the update
from thunderbird-45.6.0-2.fc25.x86_64 to thunderbird-45.6.0-3.fc25.x86_64 didn't have
a drpm. Anyone know what's going on?

[Andre Robatino]

Turns out that the F25 drpm settings weren't updated after release. It's just been
changed, see http://infrastructure.fedoraproject.org/cgit/ansible.git/commit/?id=db07e40 .

[stan]

On Sat, 14 Jan 2017 16:16:10 -0000
"Andre Robatino" <robatino(a)fedoraproject.org&gt; wrote:

>  Turns out that the F25 drpm settings weren't updated after
> release.
>  It's just been changed, see
>  http://infrastructure.fedoraproject.org/cgit/ansible.git/commit/?id=db07e40 . 
Thanks for pursuing this.  I noticed that deltarpms weren't
consistently happening, but I thought that someone had decided they were
not needed or something.  Part of those continuous Fedora changes.

Like an ISO 9001 factory, continuous improvement.

I've noticed something else, but haven't mentioned it.  It seems that
the updates repository grows constantly in size, and that dnf downloads
the whole thing every time.  Is that part of the deltarpm change, so it
will only download the differences now?  It seems a waste to download
all the information that is already here again.

[Andre Robatino]

I think it's expected that the size of the update metadata grows after release. There
have been some bugs filed in the past to delta the metadata (for example
https://bugzilla.redhat.com/show_bug.cgi?id=850896 ), but it hasn't happened so far.

[Bob Goodwin]

On 01/14/17 12:29, stan wrote:
>  On Sat, 14 Jan 2017 16:16:10 -0000
>  "Andre Robatino"<robatino(a)fedoraproject.org>  wrote:
>
> > Turns out that the F25 drpm settings weren't updated after release.
> > It's just been changed, see
> > http://infrastructure.fedoraproject.org/cgit/ansible.git/commit/?id=db07e40  .
>  Thanks for pursuing this.  I noticed that deltarpms weren't
>  consistently happening, but I thought that someone had decided they were
>  not needed or something.  Part of those continuous Fedora changes. 
+

I meant to ask about this too. My data 
usage is allocated by Viasat and I watch 
it carefully. I've noticed that there 
were very few drpms with fedora 25 upgrades.

Is the above page saying that this 
problem is fixed and things should work 
as in the past after today?

Bob

-- 
Bob Goodwin - Zuni, Virginia, USA
http://www.qrz.com/db/W2BOD
box10  FEDORA-25/64bit LINUX XFCE Fastmail POP3

[stan]

On Sat, 14 Jan 2017 17:55:02 -0000
"Andre Robatino" <robatino(a)fedoraproject.org&gt; wrote:

>  I think it's expected that the size of the update metadata grows
>  after release. There have been some bugs filed in the past to delta
>  the metadata (for example
>  https://bugzilla.redhat.com/show_bug.cgi?id=850896 ), but it hasn't
>  happened so far. _______________________________________________ 
Thanks.

[Andre Robatino]

I'm not sure whether it will take effect on the next push or not, Kevin Fenzi made the
change just after I asked about it on #fedora-releng . He said he wasn't sure whether
it would make all the missing deltas, or just the new ones going forward.

[Bob Goodwin]

On 01/14/17 14:08, Andre Robatino wrote:
>  I'm not sure whether it will take effect on the next push or not,
> Kevin Fenzi made the change just after I asked about it on #fedora-releng . He said he
> wasn't sure whether it would make all the missing deltas, or just the new ones going
> forward. 
+
Ok, I'll wait and see what happens ...

Thanks,

Bob

-- 
Bob Goodwin - Zuni, Virginia, USA
http://www.qrz.com/db/W2BOD
box10  FEDORA-25/64bit LINUX XFCE Fastmail POP3

[Andre Robatino]

With the latest push, it's creating drpms both between the 2 latest versions, and
between release and latest. But it didn't create the drpms that were missing before.
For example, in https://dl.fedoraproject.org/pub/fedora/linux/updates/25/x86_64/drpms/
there's still only thunderbird-45.4.0-1.fc25_45.6.0-3.fc25.x86_64.drpm (there should
have been one from 45.6.0-2 to 45.6.0-3, but that update was from before the fix) but for
the just released 4.9.3 kernel there's both
kernel-4.8.16-300.fc25_4.9.3-200.fc25.x86_64.drpm and
kernel-4.8.6-300.fc25_4.9.3-200.fc25.x86_64.drpm. So should be good going forward, if
you're already up to date.