Re: [Qemu-devel] [PATCH V5 0/7] Giving names to BlockDriverState graph nodes

[Kevin Wolf]

Am 21.01.2014 um 16:36 hat Benoît Canet geschrieben:
> Le Tuesday 21 Jan 2014 à 15:33:09 (+0100), Kevin Wolf a écrit :
> > Am 12.12.2013 um 16:33 hat Benoît Canet geschrieben:
> > > v5:
> > >     block empty node names [Kevin]
> > >     factorize setting of node-name option [Kevin]
> > >     NULL terminate node_name on removal [Kevin]
> > >     make query-named-block-nodes return BlockDeviceInfo structure [Eric]
> > >     Change some doc in query-named-block-nodes [Eric]
> > >     Document the choice of the QMP API for node name [Eric]
> > >     Use the same authorization as snapshot on block resize [Kevin]
> > >     Rebase the series [Kevin]
> > > 
> > > Benoît Canet (7):
> > >   block: Add bs->node_name to hold the name of a bs node of the bs
> > >     graph.
> > >   block: Allow the user to define "node-name" option.
> > >   qmp: Add a command to list the named BlockDriverState nodes.
> > >   qmp: Allow to change password on named block driver states.
> > >   block: Create authorizations mechanism for external snapshot and
> > >     resize.
> > >   qmp: Allow block_resize to manipulate bs graph nodes.
> > >   qmp: Allow to take external snapshots on bs graphs node.
> > 
> > One more general question: Now that we have node names, should
> > bdrv_file_open() use node names rather than device names for references?
> > (Well, no, come to think of it, it's not really a question, but more of
> > a request ;-))
> :)
> I don't understand what you mean: I don't see any reference to device_name in
> bdrv_file_open only one in bdrv_open which is used in a printf.

I'm talking about the function parameter 'const char *reference', which
references an existing block device rather than opening a new one. It
doesn't directly use device_name, but it calls bdrv_find().

Kevin