From 112069c70df5c7719af9291a8de2b4fcf48d049a Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@redhat.com>
Date: Mon, 16 Oct 2017 17:46:03 -0500
Subject: [PATCH] os/bluestore: fsync on _write_bdev_label

Signed-off-by: Sage Weil <sage@redhat.com>
(cherry picked from commit 7aca8af6625156eeaa936629f83ede33d3bbe866)
---
 src/os/bluestore/BlueStore.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index f3d8d58679d7..839c54f1d96a 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -4046,6 +4046,11 @@ int BlueStore::_write_bdev_label(CephContext *cct,
     derr << __func__ << " failed to write to " << path
 	 << ": " << cpp_strerror(r) << dendl;
   }
+  r = ::fsync(fd);
+  if (r < 0) {
+    derr << __func__ << " failed to fsync " << path
+	 << ": " << cpp_strerror(r) << dendl;
+  }
   VOID_TEMP_FAILURE_RETRY(::close(fd));
   return r;
 }
-- 
2.47.3