Re: [Xen-devel] blktap3 as a block device?

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Sat, 24 Nov 2012, Darren Shepherd wrote:
> On Nov 23, 2012, at 4:39 PM, "Fajar A. Nugraha" <list@xxxxxxxxx> wrote:
> 
> > On Sat, Nov 24, 2012 at 7:31 AM, Darren Shepherd
> > <darren.s.shepherd@xxxxxxxxx> wrote:
> >> So currently blktap2 can be used outside of Xen, but I don't think many
> >> people do that.  I have a use case now where I must support KVM (I 
> >> currently
> >> run only Xen servers) and found the disk snapshotting to be not as nice as
> >> what I can do with vhd's in blktap2 (and a half).  So I was thinking of
> >> actually trying to just run blktap for the storage.  So I'm pretty pleased
> >> with that solution and functionally it works just fine.
> >> 
> >> The problem now is blktap3.  So is there going to be any way to use blktap3
> >> outside of Xen?  If blktap3 is the future I probably won't continue with my
> >> blktap/kvm solution.
> > 
> > Since AFAIK blktap3 is not even in xen-unstable, personally I'd just
> > use something with more userbase and better tested. Something like
> > zfsonlinux. It has support for sparse zvols, as well as snapshot and
> > clones.
> > 
> > -- 
> > Fajar
> 
> I'm using blktap2, but that's really besides the point.  
> 
> The more direct question is going forward with blktap3 is there going to be a 
> way to see the blktap device as a block device in dom0?

Yes, setting up a local frontend/backend connection in dom0: the backend is
blktap3, the frontend is the blkfront driver in the dom0 kernel

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel