To fully change the read-only state of a node, we must not only change bs->read_only, but also update bs->open_flags.
Signed-off-by: Kevin Wolf <kw...@redhat.com> Reviewed-by: Eric Blake <ebl...@redhat.com> Reviewed-by: Alberto Garcia <be...@igalia.com> --- block.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/block.c b/block.c index 0d6e5f1a76..d7bd6d29b4 100644 --- a/block.c +++ b/block.c @@ -281,6 +281,13 @@ int bdrv_set_read_only(BlockDriverState *bs, bool read_only, Error **errp) } bs->read_only = read_only; + + if (read_only) { + bs->open_flags &= ~BDRV_O_RDWR; + } else { + bs->open_flags |= BDRV_O_RDWR; + } + return 0; } -- 2.19.1