Re: [Xen-devel] [PATCH] blktap2: add blktap2 device class anddevicecontroller

[Ryan O'Connor <rjo@xxxxxxxxx>]

Hi Kan,

On Wed, Jul 01, 2009 at 02:44:55PM +0900, Masaki Kanno wrote:
> Hi Ryan,
> 
> I thought... 
> Are blktap1 and blktap2 used as follows? 
> And the head of the string of disk parameters for blktap devices is 
> 'tap:' only, isn't it?
> Is my understanding right?
> 
>      |        blktap2        |
>      +-----------+-----------+
>      | Installed | Not       |
>      |           | Installed |
> -----+-----------+-----------+
> aio  |blktap2    |blktap1    |
> -----+-----------+-----------+
> sync |blktap1    |blktap1    |
> -----+-----------+-----------+
> vmdk |blktap1    |blktap1    |
> -----+-----------+-----------+
> ram  |blktap2    |blktap1    |
> -----+-----------+-----------+
> qcow |blktap2    |blktap1    |
> -----+-----------+-----------+
> qcow2|blktap1    |blktap1    |
> -----+-----------+-----------+
> vhd  |blktap2    |blktap1    |
> -----+-----------+-----------+
> ioemu|blktap1    |blktap1    |
> -----+-----------+-----------+

Yes, you are correct. Also, note that this is the same way
BlktapController created blktap1 and blktap2 devices before my patch.

> Wed, 01 Jul 2009 13:33:35 +0900, Masaki Kanno wrote:
> 
> >Hi Ryan,
> >
> >>blktap2 devices must be handled differently than blktap2 devices. blktap2
> >                                                  ^^^^^^^
> >                                                  blktap1?  typo?

Thanks, this is a typo. It should say "blktap1".

Thanks again
Ryan
--
  Ryan O'Connor <rjo@xxxxxxxxx>

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