From 060f54960c3d2d800b28525ba8774a60578f67a8 Mon Sep 17 00:00:00 2001
From: Rishabh Dave <ridave@redhat.com>
Date: Fri, 8 Nov 2019 12:34:27 +0530
Subject: [PATCH] ceph-volume: use fsync for dd command

fsync makes sure that data and metadata is actually written to device
being zapped before finishing.

Fixes: https://tracker.ceph.com/issues/39156
Signed-off-by: Rishabh Dave <ridave@redhat.com>
---
 src/ceph-volume/ceph_volume/devices/lvm/zap.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/ceph-volume/ceph_volume/devices/lvm/zap.py b/src/ceph-volume/ceph_volume/devices/lvm/zap.py
index bca32ac883396..6e60614088d0f 100644
--- a/src/ceph-volume/ceph_volume/devices/lvm/zap.py
+++ b/src/ceph-volume/ceph_volume/devices/lvm/zap.py
@@ -66,6 +66,7 @@ def zap_data(path):
         'of={path}'.format(path=path),
         'bs=1M',
         'count=10',
+        'conv=fsync'
     ])
 
 
-- 
2.39.5