Re: [Qemu-devel] [PATCH v3 5/7] block/dirty-bitmaps: prohibit removing readonly bitmaps

[Eric Blake]

On 3/1/19 1:15 PM, John Snow wrote:
> Remove is an inherently RW operation, so this will fail anyway, but
> we can fail it very quickly instead of trying and failing, so do so.
> 
> Signed-off-by: John Snow <address@hidden>
> ---
>  blockdev.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Eric Blake <address@hidden>

> 
> diff --git a/blockdev.c b/blockdev.c
> index c8255dda0b..a9a059c570 100644
> --- a/blockdev.c
> +++ b/blockdev.c
> @@ -2881,7 +2881,8 @@ void qmp_block_dirty_bitmap_remove(const char *node, 
> const char *name,
>          return;
>      }
>  
> -    if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_BUSY, errp)) {
> +    if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_BUSY | BDRV_BITMAP_RO,
> +                                errp)) {
>          return;
>      }
>  
> 

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org