I installed 3 kernels from rawhide (f24).
Then I decided to install a kernel (downgrade) from f23.
dnf <install|distro-sync|downgrade> with any combination of --allowerasing and --best options did not work.
Dnf was complaining about "conflicting requests".
Workaround was to increase number of installonly packages by setting --setopt='installonly_limit=4'
Dnf should ideally do following:
* keep running kernel
* install kernel specified by user
* include latest kernel(s) if any
Thanks for the report. we should refactor the selection of kernels over limit to remove. It should erase the lowest kernels which are not running which are not to be installed in the transaction.
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
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*** This bug has been marked as a duplicate of bug 1191611 ***