From: Max Reitz <mre...@redhat.com>
In qcow2_write_compressed, if the compression fails, a normal cluster is
written to disk. This is done through bdrv_write on the qcow2 BDS
itself (using the guest offset), thus it is wrong to do a metadata
overlap check before.
Signed-off-by: Max Reitz <mre...@redhat.com>
Signed-off-by: Kevin Wolf <kw...@redhat.com>
---
block/qcow2.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 9095f7c..3d1e74d 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1738,14 +1738,6 @@ static int qcow2_write_compressed(BlockDriverState *bs,
int64_t sector_num,
if (ret != Z_STREAM_END || out_len >= s->cluster_size) {
/* could not compress: write normal cluster */
-
- ret = qcow2_pre_write_overlap_check(bs, QCOW2_OL_DEFAULT,
- sector_num * BDRV_SECTOR_SIZE,
- s->cluster_sectors * BDRV_SECTOR_SIZE);
- if (ret < 0) {
- goto fail;
- }
-
ret = bdrv_write(bs, sector_num, buf, s->cluster_sectors);
if (ret < 0) {
goto fail;
--
1.8.1.4
