Bug 1249427

Summary:	upon install or upgrade, dnf removes kernel even if there are fewer than installonly_limit kernels installed
Product:	[Fedora] Fedora	Reporter:	Dominik 'Rathann' Mierzejewski <dominik>
Component:	dnf	Assignee:	Packaging Maintenance Team <packaging-team-maint>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	22	CC:	jsilhan, mluscon, packaging-team-maint, pnemade, rholy, tim.lauridsen, vmukhame
Target Milestone:	---
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Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-08-03 11:08:31 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Dominik 'Rathann' Mierzejewski 2015-08-02 22:23:07 UTC

Description of problem:
Upon install or upgrade, dnf removes one existing kernel even if there are fewer than installonly_limit kernels installed.

Version-Release number of selected component (if applicable):
$ rpm -qa  \*dnf\* \*hawkey\*|sort
dnf-1.0.2-3.fc22.noarch
dnf-conf-1.0.2-3.fc22.noarch
dnf-langpacks-0.11.1-1.fc22.noarch
dnf-plugins-core-0.1.9-1.fc22.noarch
dnf-yum-1.0.2-3.fc22.noarch
hawkey-0.5.9-3.fc22.x86_64
python-dnf-1.0.2-3.fc22.noarch
python-dnf-plugins-core-0.1.9-1.fc22.noarch
python-dnf-plugins-extras-common-0.0.9-1.fc22.noarch
python-dnf-plugins-extras-migrate-0.0.9-1.fc22.noarch
python-dnf-plugins-extras-repomanage-0.0.9-1.fc22.noarch
python-hawkey-0.5.9-3.fc22.x86_64

How reproducible:
Always.

Steps to Reproduce:
1. Have the following kernels installed:
$ rpm -q kernel
kernel-4.0.7-300.fc22.x86_64
kernel-4.0.8-300.fc22.x86_64
2. Make sure installonly_limit is more than 2:
$ grep installonly /etc/dnf/dnf.conf 
installonly_limit=3
3. dnf upgrade or dnf install kernel

Actual results:
dnf tries to install kernel-4.1.3-200.fc22 (expected) and remove kernel-4.0.7-300.fc22 (not expected!)

Expected results:
dnf should only install the requested kernel, not remove any that are below installonly_limit.

Comment 1 Dominik 'Rathann' Mierzejewski 2015-08-02 23:38:06 UTC

Actually, bumping installonly_limit to 4 makes dnf keep 3 kernels as expected, so I'm suspecting an off-by-one error in the code. Could this be a duplicate of bug 1214562 or is this another issue?

Comment 2 Dominik 'Rathann' Mierzejewski 2015-08-03 11:08:31 UTC

Sorry for the noise. I found that I only removed kernel, but kernel-core and kernel-modules were still there, so everything works as designed.