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-rw-r--r--morphlib/writeexts.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/morphlib/writeexts.py b/morphlib/writeexts.py
index 48c9434e..4b9e4fcd 100644
--- a/morphlib/writeexts.py
+++ b/morphlib/writeexts.py
@@ -226,7 +226,7 @@ class WriteExtension(cliapp.Application):
def mkfs_btrfs(self, location):
'''Create a btrfs filesystem on the disk.'''
self.status(msg='Creating btrfs filesystem')
- cliapp.runcmd(['mkfs.btrfs', '-L', 'baserock', location])
+ cliapp.runcmd(['mkfs.btrfs', '-f', '-L', 'baserock', location])
def get_uuid(self, location):
'''Get the UUID of a block device's file system.'''