Concept for new installation

[jlittle]

It seems you create a Swap of 512 Megas on 500 GB SSD. This is the default for Kubuntu 24.04.

Indeed, for me calamares always creates a swap file of 512 MB (or maybe MiB), even if I've set up a swap partition.

[Virginio Miranda]

Gnah! I didn't expect problems like these. The CPU-fan which should hopefully fit inside the case won't be here until 25.02., so I have to wait some more weeks

Strange about the swap... it reads like you said, but parted tells me, I organized it correctly...

I created the RAID with mdadm and it is a RAID1 with 2 similar disks. No problem with mounting, no problem with unmounting, but with shutting down since I installed the RAID.
shutdown -v has no verbose output-effect (other than shutting down to an unresponsive system) and is not documented on the manpage.

This is not only a question of mounting and unmounting and shutdown, but raid1 array has to be in stopped state before shutdown the PC. It seems there is a problem on it. This is why i asked you to explain how you created the raid array.

i have the impression you did not do it correctly. That statement : " The HDD-RAID is mounted in /home/username/RAID, so my own files are secure on the RAID, while the system's userfiles are on the faster SSD " guide me to that.

Compare what you did with the instructions of Digital Ocean on the link bellow:

https://www.digitalocean.com/communi...a-raid-1-array

And yes, Try to mount on /mnt. Only by convention.

[nobbert]

Ok, I've followed Virginio's link to Digital Ocean on how-to-RAID.
That solved the "problem" of /dev/md0 turning into /dev/md127 but the shutdown didn't work either.

But now, I've got a glimpse of a solution:
1.) sudo umount /dev/md0
2.) sudo mdadm --stop /dev/md0
After these two commands (and especially the second one!), the system shuts down or reboots just as expected.

But how to implement these two commands into a shutdown-routine? Mess around with systemd?

By the way, I'm still waiting for a CPU-fan which fits into my casing... but that should be delivered in 2-3 weeks, finally

[Virginio Miranda]

Yes, it is possible by script and using systemd, but depending on the situation it may not work. For example: using mysql. The trick will not work because you will have to stop mysql first. Think about it. It may be better to do it manually on the command line.

[nobbert]

It finally works with systemd-services!
I did, what was documented here: https://askubuntu.com/questions/1335...n-ubuntu-21-04


Edit:
Sometimes, it seems not to work... :-/