Re: [Qemu-devel] [PATCH] Modify qemu-img to mount locally disk image using NBD (v2)

[Anthony Liguori]

Fabrice Bellard wrote:
> Laurent Vivier wrote:
>   
> > This patch is a new version of qemu-img using NBD device to mount Qemu
> > disk image.
> >
> > To not hang on UP system, it needs following patch:
> > http://article.gmane.org/gmane.linux.drivers.nbd.general/42
> > If you want to use loop to see partitions, you need this patch:
> > http://article.gmane.org/gmane.linux.kernel/651269
> > otherwise use kpartx (see kpartx package of your distro).
> >
> > This patch implements in qemu-img the client and the server of the nbd protocol.
> > Moreover, to avoid to specify a port to use, it creates a UNIX socket instead of
> > a INET socket.
> >
> > It adds two actions to qemu-img:
> > - bind, to bind a disk image to a NBD device,
> >
> >   qemu-img bind [-d] [-f fmt] device filename
> >
> >      ('-d' to daemonize)
> >
> > - unbind, to unbind it.
> >
> >   qemu-img unbind device
> > [...]
> >     
>
> Perhaps adding a new specialized tool would be better as there is no
> direct relation with qemu-img.
>   

I've been maintaining a separate tool for a while now (qemu-nbd) that 
uses the QEMU block driver code.  If there's interest in merging it, 
I'll happily submit patches.

Regards,

Anthony Liguori

> Fabrice.
>
>
>