Re: [Qemu-devel] [PATCH v2 2/2] block: move the bdrv_dev_change_media_cb()

[Luiz Capitulino <lcapitulino@redhat.com>]

On Mon, 17 Jun 2013 14:33:10 +0200
Stefan Hajnoczi <stefanha@gmail.com> wrote:

> On Mon, Jun 17, 2013 at 11:46:19AM +0200, Pavel Hrdina wrote:
> > On 5.6.2013 15:23, Stefan Hajnoczi wrote:
> > >On Wed, May 29, 2013 at 06:18:19PM +0200, Pavel Hrdina wrote:
> > >>@@ -1071,14 +1072,18 @@ static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
> > >>          if (password) {
> > >>              if (bdrv_set_key(bs, password) < 0) {
> > >>                  error_set(errp, QERR_INVALID_PASSWORD);
> > >>+                return;
> > >>              }
> > >>          } else {
> > >>              error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs),
> > >>                        bdrv_get_encrypted_filename(bs));
> > >>+            return;
> > >>          }
> > >>      } else if (password) {
> > >>          error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs));
> > >>      }
> > >>+
> > >>+    bdrv_dev_change_media_cb(bs, true);
> > >>  }
> > >
> > >Calling bdrv_dev_change_media_cb() after raising
> > >QERR_DEVICE_NOT_ENCRYPTED is intentional?  It might warrant a comment.
> > >
> > 
> > Sorry for my late answer.
> > 
> > It's just a warning, that you used a password for a block device that
> > doesn't require it. The device is opened successfully and should be
> > handled correctly (call the bdrv_dev_change_media_cb() ).
> 
> Yep, IMO it's worth a comment that this isn't an "error" just a
> "warning".

Actually, you can't have such a warning in QMP. You either fail or you
succeed. We should just do what the current code does.