this post was submitted on 28 Aug 2023
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Arch Linux

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Hello. Please critique how I'm updating / maintaining my new Arch installation so I can fix anything I'm doing wrong. This is mostly what I could gather from the Arch wiki tailored to my system. I think I know what I'm doing - but as I've often learned, it's easy to misunderstand or overlook some things.

Step 1: perform an incremental full system backup so I have something to restore if the update borks anything. I've chosen to use the rsync command as laid out on the wiki:

sudo rsync -aAXHv --delete --exclude={"/dev/*","/proc/*","/sys/*","/tmp/*","/run/*","/mnt/*","/media/*","/lost+found"} / /media/linuxhdd/archrsyncbackup

I have a large hdd mounted as a secondary drive under /media/linuxhdd. It is configured to automatically mount from fstab using uuid. Both my root drive and that hdd are formatted ext4. I'm not using the -S option because I don't think I'll be using virtual machines (I have other hard drives I can make bootable). --delete is used so I maintain one current set of files for restore purposes. This keeps the copying and transfer time to a minimum. (I maintain disk images offline with a different tool - this is simply one local copy for easy restoration purposes)

Step 2: Check the Arch wiki - follow instructions for any manual steps

Step 3: once every 1-2 months, update the mirror list using reflector

sudo reflector --protocol https --verbose --latest 25 --sort rate --save /etc/pacman.d/mirrorlist

This should sort the fastest 25 mirrors into mirrorlist. Remember to use the -Syyu option in step 6 if this step was done

Step 4: Clean the journal

sudo journalctl --vacuum-time=4weeks

This should keep 4 weeks of files.

Step 5: Clean the cache

sudo paccache -r

This should keep no more than 3 versions laying around. Once and a while, I can clean out all uninstalled packages with -ruk0 options instead.

Step 6: Upgrade Arch packages with pacman

sudo pacman -Syu

I need to watch for pacnew and pacsave files and deal with them (although I haven't seen any yet)

Step 7: Review the pacman log

nano /var/log/pacman.log

This should tell me about any warnings, errors, instructions, or other things I need to deal with.

Step 8: Remove Orphans

pacman -Qtdq | sudo pacman -Rns -

This could be recursive and needs to be run more than once. Instead, I'll just run it once every time I update. This should keep things cleaned out.

Step 9: Update AUR packages

Check the build scripts to make sure the package hasn't been taken over and that it won't run anything funny.

yay -Sua

This should update just the AUR packages

Step 10: Remove AUR orphans

yay -Yc

The wiki says this "removes unnecessary dependencies" which I believe means AUR-only orphan packages.

Step 11: Reboot

reboot

Step 12: Update flatpaks from the GUI (Gnome-->Software-->Updates)

Any mistakes? Suggestions?

Thanks!

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[โ€“] [email protected] 14 points 1 year ago* (last edited 1 year ago) (1 children)

you can automate some parts of that away or can be combined
most AUR helper will basically invoke pacman -Syu internally before actually upgrading any AUR package (as otherwise this can lead to issues)
yay in particular can just be called via yay (no arguments) which is an alias of yay -Syu

Point 3: reflector.timer comes with reflector now and runs weekly by default, you need to configure and enable it though
https://wiki.archlinux.org/title/Reflector#systemd_timer

Point 4: you can restrict the journal size to much smaller than it is by default (10% of the partition size OR maximum 4 GB): https://wiki.archlinux.org/title/Systemd/Journal#Journal_size_limit
or alternativly set MaxRetentionSec to 2419200 seconds (4 weeks)

Point 5: can be done via pacman hook automatically after every upgrade
example: https://aur.archlinux.org/packages/pacman-cleanup-hook

there are also many other useful pacman hooks which tell you if there are any orphans or if AUR packages need to be rebuild or there is a hook which reload kernel modules after a kernel upgrade (which otherwise would warrant a reboot unless you are ready for the issues of many unloaded kernel modules)

[โ€“] [email protected] 2 points 1 year ago

Awesome - thank you! I knew about yay, but wanted to understand it in case yay ever disappears like yaourt did. I did not know about the others!