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Advice on release upgrade from Xubuntu 18.04.6 to 20.04.6 through 24.04.x (self.linux)

submitted 4 months ago* (last edited 5 days ago) by Zachariah to c/linux

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Update 2025-01-04: I made extra copies of everything I thought would be nice to have ready if anything went wrong, and I verified random important files in my cloud backup. Then I went for it. Each upgrade took over half an hour. I did notice a few weird things, but also some weird things went away. My system is now on 24.04, and the important programs are running great. I even get to enjoy a few new features. I'd still like to move everything to newer/bigger drives, but I had a free day, and these upgrades are free.

I have a computer running what I think at the time was called Ubuntu Server (no GUI) that I installed Xfce on, making it essentially Xubuntu. I did this because it allowed me to use mdadm to set up RAID (4 drives; RAID 5) during the OS install.

My OS lives on an NVME drive, and I have my raid mounted at /Files.

I have lots of data in my RAID, and much (but not all!) is backed up to the cloud. There would be both emotional issues and lots of time required to fix things if I lose the RAID or the data on it.

(I am realizing as I write this that I put off upgrading so long, I can probably copy all the data to one 20TB drive (oof! That’s expensive) since they’ve gotten about as big as my 21.83TB volume.)

How safe is it to take the OS up on this offer?

New release '20.04.6 LTS' available.
Run 'do-release-upgrade' to upgrade to it.

How hard is it to reestablish the RAID if it forgets it exists?

Is there anything else I can do to make this more likely to “just work”? (Like: don’t do it over ssh)

Are there other factors I am not thinking of?

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[–] Zachariah 3 points 4 months ago

I like the idea of cloning and upgrading the clone. If it works, then there’s the added benefit of having my OS on newer hardware. Thanks!