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-rw-r--r--block/parallels.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/block/parallels.c b/block/parallels.c
index 204d20685b..ea382e8382 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -490,7 +490,13 @@ parallels_co_check(BlockDriverState *bs, BdrvCheckResult *res,
         }
     }
 
-    res->image_end_offset = high_off + s->cluster_size;
+    if (high_off == 0) {
+        res->image_end_offset = s->data_end << BDRV_SECTOR_BITS;
+    } else {
+        res->image_end_offset = high_off + s->cluster_size;
+        s->data_end = res->image_end_offset >> BDRV_SECTOR_BITS;
+    }
+
     if (size > res->image_end_offset) {
         int64_t count;
         count = DIV_ROUND_UP(size - res->image_end_offset, s->cluster_size);