Re: [Qemu-devel] [PATCH V6 8/8] block: Use graph node name as reference in bdrv_file_open().

[Max Reitz <mreitz@redhat.com>]

On 24.01.2014 14:26, Kevin Wolf wrote:
> Am 23.01.2014 um 21:31 hat Benoît Canet geschrieben:
>> Signed-off-by: Benoit Canet <benoit@irqsave.net>
>> ---
>>   block.c | 6 +++---
>>   1 file changed, 3 insertions(+), 3 deletions(-)
> I'm not going to merge this one yet. It breaks qemu-iotests case 071,
> which would have to be adapted.
>
> However, first of all I'd like to hear the opinions of at least Eric and
> Max on what BlockRef should really refer to. I think node names make
> most sense, but perhaps it's a bit inconvenient and the command line
> should default to node-name = id when id is set, but node-name isn't?

The QAPI schema is pretty clear about this: “references the ID of an 
existing block device.” However, if the ID cannot be found, I think we 
should interpret it as a reference to the node name.

Therefore, I'd first try bdrv_find() and if that returns NULL, try again 
with bdrv_find_node().

Max