Issue #1525: DNF fail-safe mechanism breaks MBS - fm-orchestrator

fm-orchestrator

#1525 DNF fail-safe mechanism breaks MBS

Closed: Fixed Mar 3, 2020 by mprahl. Opened Nov 23, 2019 by mbooth.

See for example:

https://koji.fedoraproject.org/koji/taskinfo?taskID=39239953
https://koji.fedoraproject.org/koji/taskinfo?taskID=39239879
https://koji.fedoraproject.org/koji/taskinfo?taskID=39239873
https://koji.fedoraproject.org/koji/taskinfo?taskID=39240048
https://koji.fedoraproject.org/koji/taskinfo?taskID=39239996
https://koji.fedoraproject.org/koji/taskinfo?taskID=39240872

These all failed with the following root.log error:

DEBUG util.py:596:  No available modular metadata for modular package 'module-build-macros-0.1-1.module_f32+7102+8b1132d5.noarch', it cannot be installed on the system
DEBUG util.py:596:  Error: No available modular metadata for modular package

DEBUG util.py:596:  No available modular metadata for modular package 'module-build-macros-0.1-1.module_f30+7100+0fc9a5b6.noarch', it cannot be installed on the system
DEBUG util.py:596:  Error: No available modular metadata for modular package

This is affected fully half of my component builds:

https://fedorapeople.org/~mbooth/mbs_failures.png

mbooth commented Nov 23, 2019

Retries seem to have about 50% chance of succeeding again. I feel like Zeno....

Particularly troublesome is trying to build archful packages which has (50% * n) chance of succeeding, where n is the number of architectures :-/

There seems to be no pattern as to which arches are failing with this:

https://fedorapeople.org/~mbooth/mbs_failures_arch.png

And the failing ones are different each retry...

Edited Nov 23, 2019 by mbooth

mbooth commented Nov 24, 2019

Hi @mprahl @jkaluza I would appreciate if someone could look at this with some urgency as this is critical to me resolving a fesco ticket

Edited Nov 24, 2019 by mbooth

mbooth commented Nov 25, 2019

@mizdebsk suggested I file an infra bug too, so see also: https://pagure.io/fedora-infrastructure/issue/8410

mizdebsk commented Nov 25, 2019

The issue is that fail-safe mechanism of DNF 4.2.7 is preventing module-build-macros from being installed. Koji build repos lack modular metadata, but DNF sees that module-build-macros is a modular package and fails to install it.

mprahl commented Nov 25, 2019

Thanks for raising this @mbooth. I'll continue the discussion in the fedora-infrastructure ticket.

mizdebsk commented Nov 25, 2019

Proposed fix in PR #1526

mikem commented Nov 25, 2019

For more background on the koji setting, see https://pagure.io/koji/issue/1521

mprahl commented Mar 3, 2020

Commit 2d1b0565 fixes this issue

mikem commented Apr 21, 2026

This issue has been migrated to Fedora Forge:
https://forge.fedoraproject.org/koji/mbs/issues/1525

Please continue any further discussion there.