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Bug 1988457

Summary: [RHEL8.4/Leapp/Bug] Broken systemlinks in /etc/systemd/system
Product: Red Hat Enterprise Linux 7 Reporter: Rajesh Dulhani <rdulhani>
Component: leapp-repositoryAssignee: mmatuska
Status: CLOSED ERRATA QA Contact: Upgrades and Supportability <upgrades-and-supportability>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 7.9CC: amepatil, mkluson, mmacura, mreznik, peter.vreman, pstodulk
Target Milestone: rcKeywords: Triaged
Target Release: ---Flags: pm-rhel: mirror+
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: leapp-repository-0.17.0-3.el7_9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2023-05-17 15:00:24 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 Rajesh Dulhani 2021-07-30 15:18:59 UTC 
Description of problem:

After upgrading from 7.9 to 8.4 with leapp there are many broken symlinks in /etc/systemd/system from old rhel7 systemd units that do not exists anymore on rhel8

~~~
root@rhel84:~# find /etc/systemd -type l | while read l; do echo "$l $(readlink $l) $(test -e $l || echo "BROKEN")"; done | grep BROKEN
/etc/systemd/system/multi-user.target.wants/brandbot.path /usr/lib/systemd/system/brandbot.path BROKEN
/etc/systemd/system/multi-user.target.wants/rhel-configure.service /usr/lib/systemd/system/rhel-configure.service BROKEN
/etc/systemd/system/default.target.wants/systemd-readahead-replay.service /usr/lib/systemd/system/systemd-readahead-replay.service BROKEN
/etc/systemd/system/default.target.wants/systemd-readahead-collect.service /usr/lib/systemd/system/systemd-readahead-collect.service BROKEN
/etc/systemd/system/system-update.target.wants/systemd-readahead-drop.service /usr/lib/systemd/system/systemd-readahead-drop.service BROKEN
/etc/systemd/system/sysinit.target.wants/rhel-autorelabel.service /usr/lib/systemd/system/rhel-autorelabel.service BROKEN
/etc/systemd/system/sysinit.target.wants/rhel-autorelabel-mark.service /usr/lib/systemd/system/rhel-autorelabel-mark.service BROKEN
/etc/systemd/system/sysinit.target.wants/rhel-domainname.service /usr/lib/systemd/system/rhel-domainname.service BROKEN
/etc/systemd/system/sysinit.target.wants/rhel-import-state.service /usr/lib/systemd/system/rhel-import-state.service BROKEN
/etc/systemd/system/sysinit.target.wants/rhel-loadmodules.service /usr/lib/systemd/system/rhel-loadmodules.service BROKEN
/etc/systemd/system/basic.target.wants/rhel-dmesg.service /usr/lib/systemd/system/rhel-dmesg.service BROKEN
/etc/systemd/system/local-fs.target.wants/rhel-readonly.service /usr/lib/systemd/system/rhel-readonly.service BROKEN
[crash/LI] root@li-lc-2432:~#
~~~

Most of them come from initscripts in RHEL7.9:
~~~

$ rpm -q initscripts
initscripts-9.49.53-1.el7_9.1.x86_64


$ rpm -qlv initscripts | grep /usr/lib/systemd/system
-rw-r--r--    1 root    root                      160 May 22  2020 /usr/lib/systemd/system/brandbot.path
-rw-r--r--    1 root    root                      116 May 22  2020 /usr/lib/systemd/system/brandbot.service
-rw-r--r--    1 root    root                      410 May 22  2020 /usr/lib/systemd/system/rhel-autorelabel-mark.service
-rw-r--r--    1 root    root                      459 May 22  2020 /usr/lib/systemd/system/rhel-autorelabel.service
-rw-r--r--    1 root    root                      408 May 22  2020 /usr/lib/systemd/system/rhel-configure.service
-rw-r--r--    1 root    root                      217 May 22  2020 /usr/lib/systemd/system/rhel-dmesg.service
-rw-r--r--    1 root    root                      331 May 22  2020 /usr/lib/systemd/system/rhel-domainname.service
-rw-r--r--    1 root    root                      450 May 22  2020 /usr/lib/systemd/system/rhel-import-state.service
-rw-r--r--    1 root    root                      437 May 22  2020 /usr/lib/systemd/system/rhel-loadmodules.service
-rw-r--r--    1 root    root                      401 May 22  2020 /usr/lib/systemd/system/rhel-readonly.service
~~~

The readahead was part of systemd in RHEL7.9:
~~~

$ rpm -qlv systemd | grep /usr/lib/systemd/system/systemd-readahead
-rw-r--r--    1 root    root                      845 Jan 15  2021 /usr/lib/systemd/system/systemd-readahead-collect.service
-rw-r--r--    1 root    root                      642 Jan 15  2021 /usr/lib/systemd/system/systemd-readahead-done.service
-rw-r--r--    1 root    root                      635 Jan 15  2021 /usr/lib/systemd/system/systemd-readahead-done.timer
-rw-r--r--    1 root    root                      555 Jan 15  2021 /usr/lib/systemd/system/systemd-readahead-drop.service
-rw-r--r--    1 root    root                      757 Jan 15  2021 /usr/lib/systemd/system/systemd-readahead-replay.service
~~~


Version-Release number of selected component (if applicable):
leapp-0.12.1-1.el7_9.noarch
leapp-repository-0.14.0-4.el7_9.noarch



Reproducer:

- Always, whenever we upgrade it.
- Upgrade RHEL7.9 to 8.4 using leapp
- Find broken symlinks in /etc/systemd

Result:

- Broken symlinks to non-existing RHEL7 systemd unit exists

Expected results:

- No broken symlinks should be present.
- Base OS files from initscripts and systemd RPMs dynamic created files (like the symlinks of the enabled services) are cleaned up
Comment 5 Petr Stodulka 2022-11-16 15:19:27 UTC 
Should be fixed by the upstream PR:
 - https://github.com/oamg/leapp-repository/pull/972
Comment 10 errata-xmlrpc 2023-05-17 15:00:24 UTC 
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 (leapp and leapp-repository bug fix and enhancement update), 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://access.redhat.com/errata/RHBA-2023:3187