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Description of problem: Reinstalling a kernel that is already installed (e.g. - yum reinstall kernel-3.10.0-123.el7.x86_64) has created a second copy of the kernel to appear in the grub menu. It also caused https://bugzilla.redhat.com/show_bug.cgi?id=1124074 to affect my system, but that's a separate problem.


Version-Release number of selected component (if applicable): grub2-2.02-0.2.10.el7.x86_64
yum-3.4.3-118.el7.noarch


How reproducible: Every time


Steps to Reproduce:
1. Have at least two kernels installed
2. yum reinstall kernel-3.10.0-123.el7.x86_64
3. Look at /etc/grub2.cfg, or reboot and look at menu, etc.

Actual results: Reinstalled kernel appears in grub menu twice.


Expected results: Should only appear once.


Additional info: Attached screen shot of grub menu, as well as grub2.cfg for the VM I tested on

Created attachment 972474 [details]
Screen shot of grub menu

Created attachment 972476 [details]
Config file for test system

*** Bug 1231714 has been marked as a duplicate of this bug. ***

*** Bug 1224434 has been marked as a duplicate of this bug. ***

Verified on grub2-2.02-0.25.el7, only one menuentry per kernel package after reinstall.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHSA-2015-2401.html