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

diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 5df1ea0b8d679cf09777a165fe1e6ae3e296f07e..80a33b1a6e9ae8bbd75d5ac724bd9f557f2eda40 100644 (file)
--- 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) {