From 4180958bdbe36f88fdee7b35a23f56cb65d861b5 Mon Sep 17 00:00:00 2001
From: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Date: Wed, 19 Mar 2014 00:06:45 +0000
Subject: [PATCH] Force formatting as btrfs filesystem, to bypass mkfs.btrfs
 safety-check that target (possibly) contains existing filesystem when
 formatting partitions with btrfs. (LP: #1276356) (Closes: #721847)

---
 commit.d/format_btrfs | 2 +-
 debian/changelog      | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/commit.d/format_btrfs b/commit.d/format_btrfs
index 3f7044a..030cd22 100755
--- a/commit.d/format_btrfs
+++ b/commit.d/format_btrfs
@@ -59,7 +59,7 @@ for dev in $DEVICES/*; do
 			code=0
 			# Ensure label is quoted correctly
 			log-output -t partman --pass-stdout \
-				mkfs.btrfs ${label:+-L "$label"} \
+				mkfs.btrfs -f ${label:+-L "$label"} \
 					 $device >/dev/null || code=$?
 			sync
 			db_progress STOP
diff --git a/debian/changelog b/debian/changelog
index e4929e0..e554cf3 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+partman-btrfs (15) UNRELEASED; urgency=medium
+
+  * Force formatting as btrfs filesystem, to bypass mkfs.btrfs
+    safety-check that target (possibly) contains existing filesystem when
+    formatting partitions with btrfs. (LP: #1276356) (Closes: #721847)
+
+ -- Dimitri John Ledkov <xnox@ubuntu.com>  Wed, 19 Mar 2014 00:06:00 +0000
+
 partman-btrfs (14) unstable; urgency=low
 
   * Add nodiratime and discard mount options (see #722598; LP: #978032).