docs: add instructions for managing JuiceFS object storage in README

README.md

@@ -67,6 +67,25 @@ If you add a new system you should add the relevant files to these paths.
 - `config/ssh/authorized_keys`: Contains the public keys per hostname that will be symlinked to the `~/.ssh/authorized_keys` file.
 - `config/home-manager/flake.nix`: Contains an array `homeConfigurations` where you should be adding the new system hostname and relevant configuration.
 
+### Object Storage
+
+In case you need to adjust anything regarding the /mnt/object_storage JuiceFS.
+Ensure to shut down all services:
+```bash
+dotf service stop --all
+```
+
+Unmount the volume:
+```bash
+sudo systemctl stop juicefs
+```
+
+And optionally if you're going to do something with metadata you might need to stop redis too.
+```bash
+cd ~/services/juicefs-redis/
+docker compose down --remove-orphans
+```
+
 ### Adding a new system
 
 To add a new system you should follow these steps: