Re: [Freeze Break Request] Add zchunk support to updates and updates-testing repositories

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On Sun, 2019-03-31 at 05:13 +0000, Peter Robinson wrote:
> On Sun, Mar 31, 2019 at 6:01 AM Kevin Fenzi <kevin@xxxxxxxxx> wrote:
> > On 3/30/19 9:50 PM, Peter Robinson wrote:
> > > > Great, thanks!  I'll be keeping an eye on the composes to see if there
> > > > are any issues.
> > > 
> > > Wasn't this disabled in the main Fedora branched compose? If so why
> > > would we want to enable it only on updates?
> > 
> > There's no updates in f30 indeed, but updates-testing should be there
> > and available for testing. Nearer release we will enable updates and if
> > we didn't enable this for them now we might well not remember to do so,
> > so it seemed like a good idea to just do them both.
> 
> I was referring to commits 6c392f16 and 96adf9a in pungi-fedora, if
> it's disabled in the base fedora repo why enable it in
> updates/testing?

Hey Peter, the zchunk metadata generation was disabled in the base repo
because of a bug that popped up in a combination that the compose
process happened to hit: using a single baseurl and downloading a
zchunk file with tens of thousands of chunks on a slow processor.

The bug has been fixed with updates to both zchunk and libcurl (see 
https://bugzilla.redhat.com/show_bug.cgi?id=1690971) and it shouldn't
affect beta users because the number of chunks in updates and updates-
testing is a magnitude lower than the base repo.

*However*

Due to an unrelated *major* bug in the latest librepo update (
https://bugzilla.redhat.com/show_bug.cgi?id=1694411), I'd like to
request that we disable zchunk metadata generation in updates and
updates-testing until it's fixed.

Jonathan
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