reintroduce data disks

debian/files/cloud_init.cfg.tftpl

@@ -40,10 +40,30 @@ runcmd:
 - dhclient
 - locale-gen
 
-%{ if data_share != "" }
+%{ if data_disk }
+device_aliases:
+  data: /dev/vdb
+disk_setup:
+  data:
+    table_type: 'gpt'
+    layout: true
+    overwrite: false
+fs_setup:
+  - label: 'data'
+    filesystem: 'ext4'
+    device: data.1
+    overwrite: false
+%{ endif }
+
+%{ if data_disk || data_share }
 mounts:
+%{ if data_disk != "" }
+- ["data.1", "/mnt/data"]
+%{ endif }
+%{ if data_share != "" }
 - ["data", "${data_share}", "9p", "trans=virtio,rw", "0", "0"]
 %{ endif }
+%{ endif }
 
 %{ if fixed_dns != "" }
 manage_resolv_conf: true