From: Max Reitz <mreitz@redhat.com>
Date: Tue, 2 Dec 2014 17:32:52 +0000 (+0100)
Subject: qcow2: Respect bdrv_truncate() error
X-Git-Tag: qemu-xen-4.6.0-rc1~34^2~43
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=9b3f3d6da97727576b36958fa60f0b0faffb334a;p=qemu-upstream-4.6-testing.git

qcow2: Respect bdrv_truncate() error

bdrv_truncate() may fail and qcow2_write_compressed() should return the
error code in that case.

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 6a69b9620ac1562a067990d87284a85552bfd61b)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---

diff --git a/block/qcow2.c b/block/qcow2.c
index a33e86337..c98d3b778 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -2162,8 +2162,7 @@ static int qcow2_write_compressed(BlockDriverState *bs, int64_t sector_num,
         /* align end of file to a sector boundary to ease reading with
            sector based I/Os */
         cluster_offset = bdrv_getlength(bs->file);
-        bdrv_truncate(bs->file, cluster_offset);
-        return 0;
+        return bdrv_truncate(bs->file, cluster_offset);
     }
 
     if (nb_sectors != s->cluster_sectors) {