ignoreError for btrfs fs dev

1 files changed, 1 insertions, 1 deletions

diff --git a/fsmgr.hs b/fsmgr.hs
index 53c96b7..70486a4 100644
--- a/fsmgr.hs
+++ b/fsmgr.hs
@@ -239,7 +239,7 @@ buildInitialImage DiskImageConfig{..} mountpoint out = do
       cmd_ "mkdir -p" [mountpoint]
       cmd_ "sh -c" ["if [ -e \"$0\" ]; then cp \"$0\" \"$1\"; fi", parent <.> "devices.txt", out -<.> "devices.txt"]
 
-      cmd_ "btrfs dev scan -u"
+      ignoreErrors $ do cmd_ "btrfs dev scan -u"
       cmd_ "mount -t btrfs" [out] mountpoint
 
     SeededImage n f -> do