Old debmirrors don't support any of xenial's Translation-* compressions

[LaMont Jones]

With xenial dropping the bz2 translations files, trusty's debmirror (1:2.16ubuntu1) fails to mirror any translation files. This then results in the mirror being left in /var/lib/apt/lists/partial, and the mirror being effectively ignored.

[Test Case]

With debmirror 1:2.16ubuntu1:

debmirror --method=http --host=ppa.launchpad.net --root=wgrant/experimental/ubuntu --dist xenial --section=main --arch=amd64 --rsync-extra=none --i18n --verbose --ignore-release-gpg tmp-wgrant-experimental

Verify tmp-wgrant-experimental/dists/xenial/main/i18n/Translation-en.gz does not exist.

Rerun with debmirror 1:2.16ubuntu1.1 and verify that Translation-en.gz now exists.

[Regression Potential]

Old primary archive release pockets only list bz2, so there will be no change in behaviour. But debmirror will now download gz too for post-release pockets and recently changed PPAs, which could conceivably break an untested gzip path in some client. But it's very unlikely, as rsync-based mirrors have had the gz files for weeks.

[William Grant (wgrant)]

trusty's debmirror supports gzip and bzip2 in most places, but will break if gzip disappears for normal indices or bzip2 disappears for Translation-*. Fixing precise and trusty to support bzip2 and xz everywhere is easy, but coping with lack of gzip is probably not worth it.

[William Grant (wgrant)]

precise just downloads everything mentioned in i18n/Index, so it actually already generates a functional archive.

The lowest impact fix for trusty is to mirror Translation-*.gz as well. xenial's apt falls straight back from xz to gz for Packages/Sources/Translation-*, so it works fine even without full xz support.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Maik Zumstrull (m-zumstrull)]

Is it intentional that this is set Invalid and therefore hidden in the bug overview? That's pretty much why I accidentally duped it.

[Colin Watson (cjwatson)]

The default-series task is Invalid (should actually be Fix Released - changed) since it's already fixed in xenial. The trusty task is open.

[Rick Sherman (shermdog)]

The guidance from #1565751 appears to correct the issue.

[Adam Conrad (adconrad)]

Hello LaMont, or anyone else affected,

Accepted debmirror into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/debmirror/1:2.16ubuntu1.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[William Grant (wgrant)]

Turns out I was looking at the dep11 bits of xenial's debmirror, not the i18n function. 1:2.25ubuntu1 has the same issue.

[Launchpad Janitor (janitor)]

This bug was fixed in the package debmirror - 1:2.25ubuntu2

---------------
debmirror (1:2.25ubuntu2) xenial; urgency=medium

  * Download Translation-*.gz/xz in addition to Translation-*.bz2. Launchpad
    replaces bz2 with xz from xenial. (LP: #1565585)

 -- William Grant <email address hidden> Tue, 05 Apr 2016 15:17:59 +1000

[Roman Fiedler (roman-fiedler-deactivatedaccount)]

Package installed on our package mirror, fixes the bug and allows to mirror Xenial from here on. (Mirror already filled, working).

[Adam Conrad (adconrad)]

Marking v-done based on comment 11.

[Launchpad Janitor (janitor)]

This bug was fixed in the package debmirror - 1:2.16ubuntu1.1

---------------
debmirror (1:2.16ubuntu1.1) trusty; urgency=medium

  * Download Translation-*.gz in addition to Translation-*.bz2. Launchpad
    replaces bz2 with xz from xenial. (LP: #1565585)

 -- William Grant <email address hidden> Mon, 04 Apr 2016 14:56:40 +1000

[Adam Conrad (adconrad)]

The verification of the Stable Release Update for debmirror has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.