What file system type and markup type is best for a Linux server?

Question

linux

Good day everyone, I consider myself a more / less advanced Linux user, but I suddenly ran into the need for advice from more experienced people:
I wanted to make a Linux server, I want on Ubuntu, to create an Active Directory domain controller, and then enter Windows computers into this domain.
Suddenly, the task arose - what type of markup and what file system is better to choose for such a server? ordinary, i.e. not lvm markup or is lvm still better?
What FS - ext4 or btrfs?
It is clear that the FS will work with any markup, but in the future pitfalls may arise due to the ill-conceived creation of the server, which would not be desirable

Answer 1

btrfs - of course, it is not as well debugged as ext4, but it has an excellent plus that overlaps the minuses, namely
btrfs snapshot - in case of an accident during an update, etc., etc., you just boot, and at system startup you select a snapshot to roll back the state.
And if the VPS doesn’t need this, then it’s just a fairy tale for didikate.
https://losst.ru/obzor-ext4-vs-btrfs-vs-xfs

Answer 2

put ext4 naked, you can't go wrong. one moment - if the raid, then it is difficult to expand later

Answer 3

Judging by the question - surrender to the opinion of the installer. Here's what he puts for you - then leave it ...

Answer 4

ext4
lvm
The absence of lvm, if necessary, to expand the file system, will lead to the old solution - mounting partitions to mount points (well, that is, we mount /dev/sdb1 in /usr, /dev/sdb2 etc in /var). This is quite a solution that has been run in thousands of installations, but it has a significant drawback - to implement it, you need to stop the server while copying /usr, /var etc to new locations.
If the server stop is not critical - you can not use lvm. I once fucked wildly with this FS extension on FreeBSD (where there is no lvm - well, at least in 9.1-RELEASE it was not), so on Linux lvm is just something with something.