From 959fe7de1f0f6fadb86e853edead6d32c3cb3559 Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
Date: Tue, 16 Aug 2016 12:29:05 +0200
Subject: [PATCH] Shrink volume even with ALLOCATE flag

Calling fallocate on the new (smaller) capacity ensures
that the whole file is allocated, but it does not reduce
the file size.

Also call ftruncate after fallocate.

https://bugzilla.redhat.com/show_bug.cgi?id=1366446
---
 src/util/virstoragefile.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 5df1ea0b8d..80a33b1a6e 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -1338,12 +1338,12 @@ virStorageFileResize(const char *path,
             }
             goto cleanup;
         }
-    } else {
-        if (ftruncate(fd, capacity) < 0) {
-            virReportSystemError(errno,
-                                 _("Failed to truncate file '%s'"), path);
-            goto cleanup;
-        }
+    }
+
+    if (ftruncate(fd, capacity) < 0) {
+        virReportSystemError(errno,
+                             _("Failed to truncate file '%s'"), path);
+        goto cleanup;
     }
 
     if (VIR_CLOSE(fd) < 0) {
-- 
2.39.5