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Re: [Xen-devel] [PATCH 0 of 5 RFC] blktap3: Introduce xenio daemon (coordinate blkfront with tapdisk).



On Mon, 2012-12-03 at 17:55 +0000, Thanos Makatos wrote:
> > On Wed, 2012-11-28 at 14:20 +0000, Thanos Makatos wrote:
> > > This patch series introduces the xenio daemon.
> > 
> > Can we call it something less generic?
> 
> Sure, though I don't really have good alternatives. Conceptually this
> daemon is blkback's user space counterpart, but naming it blkback
> would bring much confusion I believe. What about "tapback"? (Just a
> suggestion.)

tapback works, or blktapd, blktap3d etc. Even xenioblkd perhaps?

> 
> > 
> > >  This daemon is responsible for
> > > coordinating blkfront and tapdisk, when blkfront changes state. It
> > does so by
> > > monitoring XenStore for blkfront state changes. The daemon
> > creates/destroys the
> > > shared ring, instructs the tapdisk to connect to/disconnect from it,
> > and
> > > manages the state of the back-end.
> > 
> > So xenio creates the ring and manages xenstore? How does tapdisk get
> > access to the ring?
> 
> Exactly, xenio creates the ring and manages xenstore. Tapdisk accesses
> the shared ring via a static library that will be introduced by
> another patch series -- it's the series I'm currently working on. I'll
> update this series' description to clarify this.

Thanks.



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