From: liuhaiwei <liuhaiwei@inspur.com>
1、dirty bitmap size big enough (such as 8MB) when block size 1T ;
2、we set the migrate speed or the bandwith is small enough(such as 4MB/s)
so we set the fake pending size when pending size > threshold size
Signed-off-by: liuhaiwei <liuhaiwei9699@126.com>
Signed-off-by: liuhaiwei <liuhaiwei@inspur.com>
---
migration/block-dirty-bitmap.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c
index 9aba7d9c22..40f5a1aaf9 100644
--- a/migration/block-dirty-bitmap.c
+++ b/migration/block-dirty-bitmap.c
@@ -782,7 +782,10 @@ static void dirty_bitmap_save_pending(QEMUFile *f, void *opaque,
}
qemu_mutex_unlock_iothread();
-
+ /*we set the fake pending size when the dirty bitmap size more than max_size */
+ if(pending > max_size && max_size != 0){
+ pending = max_size - 1;
+ }
trace_dirty_bitmap_save_pending(pending, max_size);
*res_postcopy_only += pending;
--
2.27.0