Score:2

Ubuntu 20.04 reverted to 18.04 on it's own

ng flag

This has me really confused. I have been running Ubuntu Server 20.04 for months. I was logged in from my Windows machine through SSH (I normally leave this open all the time). I have several drives on my sever mapped to windows. When I got home from work tonight I saw a message that said failure to reconnect to ### - already connected. There was also a time out error from Putty stating that I was disconnected from the server. I restarted Putty and logged back in with no problem but found that my Ubuntu version is now 18.04 LTS. I checked and the last reboot was on 12-6-21 - 10 days ago. And I have not intentionally reverted back to 18.04. How did this happen. I am running VEEAM on the server with daily cron backups but don't see how VEEAM could have did a restore on it's own. Any help would be apprecaited.

Anders F. U. Kiær avatar
in flag
mayb read thru the syslog to see if you can get any ideas? `cat /var/log/syslog | less`
guiverc avatar
cn flag
Ubuntu has no tools/capacity to revert to prior versions (upgrade tools go to newer, data restores from backups take users back but that's a user implemented feature). The version though is just a text file, so can be easily changed. From your description I wonder what you're really running as going backwards requires a user to setup that data.restore.feature and implies you never fully upgraded to me in the first place & need to check/verify details.
mchid avatar
bo flag
What version name shows when you run `cat /etc/apt/sources.list`? Does it show bionic or focal?
ru flag
You should check your veeam logs to make sure it didn't do some kind of odd recovery issue or someone with veeam access reverted your system. There are *zero* mechanisms to revert an upgrade unless a full restore via a back up system like via Veeam happened.
Rick C avatar
ng flag
syslog doesn't really show anything that indicates a problem. sources.list is showing bionic and not focal. guiverc, I was sure I upgraded because I had to deal with all the snap stuff and networking issues present with 20.04. I guess I can mount a Veeam backup from a few days back and check my sources.list file in the backup.
Rick C avatar
ng flag
Thomas Ward - Veeam logs show nothing about a restore. Veeam interface shows a successful backup at 6am.
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