Article Summary:

Setting options for the main LUKS device on a Fedora Atomic Desktop system, where the root partition is located, is slightly different from a package mode Fedora installation.

Article Description:

This will explain how to manually configure the following fixes for existing systems:

Poor performance with dm-crypt on SSD (was Application not responding under heavy load) · Issue #388 · fedora-silverblue/issue-tracker · GitHub
Enable fstrim on LUKS encrypted partitions · Issue #31 · fedora-silverblue/issue-tracker · GitHub
Upgrade LUKS key derivation function on (major?) updates · Issue #455 · fedora-silverblue/issue-tracker · GitHub

We may be able to fix the first two issues in an upcoming Fedora release for new installations but existing systems won’t be updated and will need manual intervention.

https://discussion.fedoraproject.org/t/setting-options-for-luks-devices-on-fedora-atomic-desktops/146694