This commit is contained in:
Rachel Lambda Samuelsson 2024-06-21 17:31:13 +02:00
parent 527492044a
commit f3963e3bab

32
readme.md Normal file
View File

@ -0,0 +1,32 @@
# NixOS server
This is my homeserver running NixOS. It makes heavy use of containers in order to organize processes.
## Containers
The file `host.nix` has a whole load of code which basically allows one to specify services in the `service/` directiory, which are then ran in seperate NixOS containers.
## Disk setup
* root filesystem
- The root FS is on a 128GB SATA SSD running EXT4. (also used for vfat boot partiotion)
- Nothing fancy, just reliable and slightly faster root.
* container storage
- The container storage is a ZFS pool
- Its running on a mirror configuration with 1TB disk pairs (currently one pair)
- It has a blocksize of 1M to accomodate serving large media files (FLAC music, 4K movies, series, etc). This is deemed more important than DB performance in this application
- It is compressed using ZFS standard LZ4 compression to save space
- A 7 day window of snapshots are kept on the drive
- A lot of inspiration where taken from the following sources
- Official OpenZFS docs
- https://jrs-s.net/2018/08/17/zfs-tuning-cheat-sheet/
- https://wiki.nixos.org/wiki/ZFS
- https://jrs-s.net/2015/02/06/zfs-you-should-use-mirror-vdevs-not-raidz/
- https://openzfs.github.io/openzfs-docs/Getting%20Started/NixOS/index.html
* backups
- Backups are made to a second pool on an external drive
- All snapshots are sent over to this drive, and they are not deleted
- It runs slower GZ based compression to minimize space taken
- TODO: what do I do when this is full?