From 098ffa6674a82ceac0e3ccb3a8a5bf6ca44adcd5 Mon Sep 17 00:00:00 2001
From: Max Reitz <mreitz@redhat.com>
Date: Tue, 18 Nov 2014 11:23:06 +0100
Subject: [PATCH] block/raw-posix: Catch fsync() errors
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

fsync() may fail, and that case should be handled.

Reported-by: László Érsek <lersek@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/raw-posix.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/block/raw-posix.c b/block/raw-posix.c
index d106fc456b..b1af77e47f 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -1454,7 +1454,12 @@ static int raw_create(const char *filename, QemuOpts *opts, Error **errp)
             left -= result;
         }
         if (result >= 0) {
-            fsync(fd);
+            result = fsync(fd);
+            if (result < 0) {
+                result = -errno;
+                error_setg_errno(errp, -result,
+                                 "Could not flush new file to disk");
+            }
         }
         g_free(buf);
         break;