1 files changed, 3 insertions, 1 deletions

diff --git a/fsmgr.hs b/fsmgr.hs
index d8e1c1d..bd4e303 100644
--- a/fsmgr.hs
+++ b/fsmgr.hs
@@ -229,6 +229,7 @@ buildInitialImage DiskImageConfig{..} mountpoint out = do
       need [parent]
       cmd_ "cp --reflink" [parent, out]
       cmd_ "btrfstune -f -S0" [out]
+      cmd_ "btrfstune -fu" [out]
       cmd_ "mkdir -p" [mountpoint]
       cmd_ "sh -c" ["if [ -e \"$0\" ]; then cp \"$0\" \"$1\"; fi", parent <.> "devices.txt", out -<.> "devices.txt"]
 
@@ -380,7 +381,8 @@ chrootImage target args =
       let mnt = tmp <.> "mnt"
       orderOnly [inp]
       cmd_ "cp --reflink=always" [inp, tmp]
-      cmd_ "btrfstune -S0 -f" tmp
+      cmd_ "btrfstune -S0 -f" [tmp]
+      cmd_ "btrfstune -fu" [tmp]
       cmd_ "mkdir" [mnt]
 
       setupLoopDevices target