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this post was submitted on 26 Aug 2024
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Linux
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That's enough upgrades it could cause some issues, but I wouldn't expect it to be a problem with the RAID array itself, mostly applications and configs that don't work anymore because you're jumping 6 years into the future in terms of software versions. Some things like PostgreSQL you have to dump the data out, install the new version and load it back in, so that's one example of something that could break and would be expected to break.
I believe if you just boot the 24.04 installer it'll see the drives right away, they're pretty persistent. But failing that, you can assemble it manually with
mdadm --assemble, or you can backup your/etc/mdadm.conf. That should give you some confidence that if something wrong happens with the Ubuntu install it will be easy to reinstall fresh and not lose your array. Just get it mounted readonly in the live ISO so you know how to get your data, and you'll feel a lot safer doing the upgrade.Thank you! That command and file to backup are the kind of info I was after.
And I appreciate the reminder that applications and configs might not work. I plan to test everything after each upgrade (I don’t plan on jumping straight to 24.04).
I do already know the version of TigerVNC, for example, I’m using is not the same as the latest, and I’ve seen it works a bit different on my machines with newer OS versions. Also I seem to remember Firefox needs to be installed as deb not snap or it won’t work with TigerVNC. So I’ll make sure to backup my profile folder for Firefox.
This computer is mostly a file server, I’ll have to do an inventory of what software I’ve used on it over the years.