[yuggoth] Fix /persist not being available for sops

Also update the documentation so I don't forget this the next time.
barrucadu · Dec 10, 2024 · 07d91c8 · 07d91c8
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diff --git a/docs/src/runbooks/set-up-a-new-host.md b/docs/src/runbooks/set-up-a-new-host.md
@@ -56,9 +56,9 @@ nix run .#secrets
 Copy the host SSH keys to `/etc/persist`:
 
 ```bash
-mkdir /persist/etc/ssh
-cp /etc/ssh/ssh_host_rsa_key /persist/etc/ssh/ssh_host_rsa_key
-cp /etc/ssh/ssh_host_ed25519_key /persist/etc/ssh/ssh_host_ed25519_key
+sudo mkdir /persist/etc/ssh
+sudo cp /etc/ssh/ssh_host_rsa_key /persist/etc/ssh/ssh_host_rsa_key
+sudo cp /etc/ssh/ssh_host_ed25519_key /persist/etc/ssh/ssh_host_ed25519_key
 ```
 
 Enable `nixfiles.eraseYourDarlings`:
@@ -69,6 +69,17 @@ nixfiles.eraseYourDarlings.barrucaduPasswordFile = config.sops.secrets."users/ba
 sops.secrets."users/barrucadu".neededForUsers = true;
 ```
 
+Make the `/persist` volume available in early boot:
+
+```nix
+fileSystems."/persist" =
+  {
+    device = "local/persistent/persist";
+    fsType = "zfs";
+    neededForBoot = true;
+  };
+```
+
 Then:
 
 1. Rebuild the system: `sudo nixos-rebuild boot --flake /persist/etc/nixos`

diff --git a/hosts/yuggoth/hardware.nix b/hosts/yuggoth/hardware.nix
@@ -35,6 +35,7 @@
     {
       device = "local/persistent/persist";
       fsType = "zfs";
+      neededForBoot = true;
     };
 
   fileSystems."/var/log" =