Unable to downgrade from 7.2 to 7.1

Latest response

Hi

I'm running into trouble with an application after upgrading to 7.2

Now i would like to downgrade this server, but can't ...

All dependencies are OK, but the command "yum history undo xx" stops with :
Error: Trying to remove "systemd", which is protected

Has anyone a tip / hint / workaround to proceed with the undo ?

Kind regards,
Norbert

NS
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Responses

Radek Bíba's picture Red Hat Guru 1517 points
17 December 2015 11:48 AM

Hi Norbert,

If (and only if) "yum history undo ..." isn't actually going to uninstall systemd completely but it's really only downgrading it, like here:

---> Package systemd.x86_64 0:208-20.el7 will be a downgrade
---> Package systemd.x86_64 0:219-19.el7 will be erased
---> Package systemd-libs.x86_64 0:208-20.el7 will be a downgrade
---> Package systemd-libs.x86_64 0:219-19.el7 will be erased
---> Package systemd-sysv.x86_64 0:208-20.el7 will be a downgrade
---> Package systemd-sysv.x86_64 0:219-19.el7 will be erased

Then it should be safe to delete /etc/yum/protected.d/systemd.conf (or rename it to e.g. .bak) and try again. Be sure to review the transaction carefully before you confirm it!

Note: such downgrades aren't officially supported. Instead, broken systems should be recovered from backups.

NS Newbie 10 points
17 December 2015 2:07 PM

Hi Radek,

That's it. I checked the transaction messages for the "downgrade" entries. The systemd messages are exactly as listed. So i fired the downgrade ... all worked well, no error messages and after the reboot even the application starts working :-)

Thanks a lot for this fast and helpful solution

Kind regards, Norbert

Radek Bíba's picture Red Hat Guru 1517 points
17 December 2015 2:27 PM

Great! Glad to hear you were able to make the app work again.

Regards, Radek

BC Community Member 67 points
16 December 2016 8:01 PM

Tried it from RHEL 7.3 to 7.2 and worked like a charm, thank you very much! :)

TP Newbie 11 points
20 September 2017 8:59 PM

Worked in a downgrade from 7.4 to 7.3. Thanks!!!

Christian Horn's picture Red Hat Guru 3593 points
26 April 2018 5:40 AM

Above worked for me also on a 7.5->7.4 rollback. This is now captured in this kbase: https://access.redhat.com/solutions/3424281 .

VT Community Member 60 points
24 October 2018 12:50 AM

Saved me from having to restore from backup...thanks!

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