Re: [Qemu-devel] [RFC]virtio-blk: add disk-name device property

[Junkang Fu <fujunkang@gmail.com>]

You got it, that's exactly what I mean.Thank you for your advise.

2017-01-04 0:53 GMT+08:00 Eric Blake <eblake@redhat.com>:

> On 12/29/2016 08:41 PM, Junkang Fu wrote:
> >>From 74e913fc41ea98d1dde692175f1e3fb6729342aa Mon Sep 17 00:00:00 2001
> > From: "junkang.fjk" <junkang.fjk@alibaba-inc.com>
> > Date: Wed, 24 Aug 2016 19:36:53 +0800
> > Subject: [PATCH] virtio-blk: add disk-name device property
> >
> > Current virtio-blk disk name(ex. /dev/vdb) has nothing to do with the
> > target dev
> > name specified in libvirt xml file. For example, we may get disk name
> > /dev/vdb in
> > VM while target dev specified in libvirt xml is vdc.
>
> It's not really libvirt's fault.  The libvirt XML names are for
> convenience, but nothing on the host side requires the guest to pick the
> same naming scheme as the host.
>
> I guess your proposal is to enhance the virtio spec such that clients
> that are new enough to honor the new addition to the virtio spec will
> change their name-picking algorithm to use the name provided by the
> host, rather than their current approach of picking whatever name they
> feel like, and then enhance libvirt to pass the XML name on down to the
> guest?  It might work, but as others have pointed out, it will require a
> virtio spec change first.
>
> --
> Eric Blake   eblake redhat com    +1-919-301-3266
> Libvirt virtualization library http://libvirt.org
>
>