Quartz sync: Jan 5, 2024, 8:10 PM

content/notes/auto load zfs keys at boot.md

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+---
+date: 2024-01-05
+title: Automatically load zfs keys at boot
+description: Creating a systemd service to automatically load zfs keys
+tags:
+  - zfs
+---
+I recently setup a new encrypted dataset. Ubuntu/openzfs came with a systemd service to handle mounting it at boot, but not loading the keys - therefore, on reboot, it would fail to mount
+
+I did some googling and found this: https://github.com/openzfs/zfs/issues/8750#issuecomment-497500144
+
+```bash
+cat << 'EOF' > /etc/systemd/system/[email protected]
+[Unit]
+Description=Load ZFS keys
+DefaultDependencies=no
+Before=zfs-mount.service
+After=zfs-import.target
+Requires=zfs-import.target
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/sbin/zfs load-key %I
+[Install]
+WantedBy=zfs-mount.service
+EOF
+```
+
+Use like so:
+```bash
+systemctl enable zfs-load-key@tank-enc
+```
+
+to, for example, enable key loading for the volume `tank/enc`. It will automatically replace / with -