Univention UCS as KVM guest - Discard operation not supported

I built some upstream kernels on debian 10 which I just slapped onto my UCS 5 installation and I can see it behaving better interactivity. Web interface feels snappier.

For anyone interested in this, check out https://github.com/ToeiRei/kernel-deb/releases and get yourself the ‘vanilla-kernel’ which is the debian config updated doing ‘make oldconfig’ as described in the previous post

Steps to use that kernel:

  1. Download (wget works just fine)
  2. Unzip
  3. dpkg -i *.deb

very brave ones can import the repository from packagecloud (https://packagecloud.io/debian-kernels/buster) and now:

root@ucs:~# fstrim -v /
/: 34,9 GiB (37452046336 bytes) trimmed