commit 169b87935966791a860f59a2b17c4e0c7b953779
author Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Wed Jun 28 15:05:20 2017 +0300
committer Max Reitz <mreitz@redhat.com> Tue Jul 11 17:44:58 2017 +0200
tree 2c76d00277ffe3d6b651737e7113b9530f117a9f
parent 5f72826e7fc62167cf3a37383d1c1151bc9971fe

qcow2: store bitmaps on reopening image as read-only

Store bitmaps and mark them read-only on reopening image as read-only.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170628120530.31251-21-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>

block/qcow2.c

diff --git a/block/qcow2.c b/block/qcow2.c
index 790b5b1..1a31f1d 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1555,6 +1555,11 @@
 
     /* We need to write out any unwritten data if we reopen read-only. */
     if ((state->flags & BDRV_O_RDWR) == 0) {
+        ret = qcow2_reopen_bitmaps_ro(state->bs, errp);
+        if (ret < 0) {
+            goto fail;
+        }
+
         ret = bdrv_flush(state->bs);
         if (ret < 0) {
             goto fail;