I used lvm with SSD cache few years, but time to time I have problems with loads after reboot. If forgot about reboots all work great with LVM raid + LVM cache. Cache can be configured without raid. And you can add or remove cache in any time. Docs: https://man.archlinux.org/man/lvmcache.7

Signal not good enough after check protocol.

Matrix is overkill. But I was hosted it some time ago.

So, I will check Simplex Chat. Thanks.

the idea is that: all your applications work under the same user. or at least under the same group. because this is exactly how the differentiation of rights is applied.

A good plan is to create some kind of user in all three containers and run qbittorrent, samba and the third application under it.

A bad plan is to run everything under a random user with 777 rights, but this is a really bad plan.

Create a user in all three containers and work under it. That is not hard. Run qbittorent with that user. Config will be there: /home/user/.config . Then set that user for samba. I don't know third app , but I think you can find how change user in manual.

You can use Revolt. Literaly Discord clone. https://github.com/revoltchat

Oh, if only the reactors worked exclusively on uranium. Of course, I can quote Rosatom's articles, but unfortunately they are only in Russian. A closed fuel cycle was developed there back in 2015. If you want you can use Google translate: https://habr.com/ru/articles/388533/

P.S. It is very specific to get scientific knowledge from a book called GREEN POLITICAL THOUGHT

Short command wasn't work in my env. I can run only with full sockets path. May be I do something wrong.

prometheus use own time series database. you can connect influxdb to grafana and send alarms from grafana, but alertmanager better i think. node-explorer can collect all this data (sensors, VM/PC load etc.)

nvidia-open-dkms usually doesn't break when updating.

You have one GPU card? If yes you need some additional hooks (kill DE sessions, stop X, etc). Look here: https://github.com/joeknock90/Single-GPU-Passthrough .

UPD: Sorry. I read the reddit post. So you pass through single GPU. You load GPU bios when Windows load?

In general, such a configuration will be quite complicated, but if you want to try, show the VM configuration and the start hook. Without this not easy to say.

can't you replace UNIX applications in user space? Why, besides the fact that some simply have nothing to replace?

you do know what the linux kernel is, right?

I know that the core is monolithic.

In the end your distro packager decided to not split systemd into different packages

I installed these services myself, not all of them, of course, but those that I listed at the end. I know about the rest simply because I prefer to read the documentation for the services I work with. I'm not particularly happy with the systemd system as a whole. however, since there is no better alternative, the choice is small.

It also a use case. =)

The documentation for systemd-nspawn itself says:

systemd-nspawn — Spawn a command or OS in a light-weight container

The developers themselves position the daemon as a simple alternative to LXD containers.