From cb45a4b7df191215b1502575d5ba2762f9b71e3b Mon Sep 17 00:00:00 2001
From: Michael Hudson-Doyle <michael.hudson@canonical.com>
Date: Tue, 13 Mar 2018 20:19:37 +1300
Subject: [PATCH] prevent creation of a swapfile when / is btrfs

https://bugs.launchpad.net/subiquity/+bug/1750657
---
 subiquity/models/filesystem.py | 4 ++++
 subiquity/models/subiquity.py  | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/subiquity/models/filesystem.py b/subiquity/models/filesystem.py
index 86957496..b31655c3 100644
--- a/subiquity/models/filesystem.py
+++ b/subiquity/models/filesystem.py
@@ -401,6 +401,10 @@ class FilesystemModel(object):
                 return True
         return False
 
+    def swapfile_ok(self):
+        for m in self._mounts:
+            if m.path == '/':
+                return m.device.fstype != 'btrfs'
 
 ## class AttrDict(dict):
 ##     __getattr__ = dict.__getitem__
diff --git a/subiquity/models/subiquity.py b/subiquity/models/subiquity.py
index 853a2276..ac57863c 100644
--- a/subiquity/models/subiquity.py
+++ b/subiquity/models/subiquity.py
@@ -134,6 +134,9 @@ class SubiquityModel:
                 },
             }
 
+        if not self.filesystem.swapfile_ok():
+            config['swap'] = {'size': 0}
+
         config.update(self.network.render())
         config.update(self.installpath.render())