Explicit Bcachefs support #11
Description
Currently, there is root on Bcachefs detection, but that is it...
To get proper support, we need to allow installs on Bcachefs as root (or any other mountpoint) with or without compression, encryption, multi-device support, and selecting which groups/disks to be foreground/background/promote/(metadata) targets.
There are two main blockers I can think of that need special exceptions: systemd when using a multi-device pool, and 32-bit apps (this is being worked on, and can be somewhat mitigated by forcing crc32c or another checksumming algorithm? Unsure how xxhash or chacha20-poly1305 change this!).
- RFE: Multiple device filesystems systemd/systemd#8234
- Calling readdir always gives EOVERFLOW on 32-bit systems koverstreet/bcachefs#650
I believe NixOS has a custom way of making systemd play nice with bcachefs involving symlinks. This is all so new and confusing to get working together, despite the theoretical benefits of an abstracted drive pool with encryption, raid, ssd cache, etc. Looks like things are coming together.