blktap driver for xen-dom0

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blktap driver for xen-dom0

서지혜
I installed xen 3.4.1 & M.young's xendom0 kernel on  fedora 12 beta.
Everying works smoothly for me except that I can't use "tap:aio" for PV guest.
It seems that blktap driver is not installed (not supported) on dom0 kernel.
I think performance of guest OS is better when is mounted by blktap. Is there anyway I can use this option?
 
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Re: blktap driver for xen-dom0

Pasi Kärkkäinen
On Tue, Nov 10, 2009 at 11:38:15AM +0900, ?????? wrote:
>    I installed xen 3.4.1 & M.young's xendom0 kernel on  fedora 12 beta.
>    Everying works smoothly for me except that I can't use "tap:aio" for PV
>    guest.
>    It seems that blktap driver is not installed (not supported) on dom0
>    kernel.
>    I think performance of guest OS is better when is mounted by blktap. Is
>    there anyway I can use this option?
>

unfortunately blktap2 is not yet available for pvops dom0.
So atm you should use phy: and lvm-volumes.

If you know C and linux kernel coding you could help with porting the
blktap2 driver from 2.6.18 to pv_ops dom0 2.6.31.x :)

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Re: blktap driver for xen-dom0

Pasi Kärkkäinen
On Tue, Nov 10, 2009 at 09:32:32AM +0200, Pasi Kärkkäinen wrote:

> On Tue, Nov 10, 2009 at 11:38:15AM +0900, ?????? wrote:
> >    I installed xen 3.4.1 & M.young's xendom0 kernel on  fedora 12 beta.
> >    Everying works smoothly for me except that I can't use "tap:aio" for PV
> >    guest.
> >    It seems that blktap driver is not installed (not supported) on dom0
> >    kernel.
> >    I think performance of guest OS is better when is mounted by blktap. Is
> >    there anyway I can use this option?
> >
>
> unfortunately blktap2 is not yet available for pvops dom0.
> So atm you should use phy: and lvm-volumes.
>
> If you know C and linux kernel coding you could help with porting the
> blktap2 driver from 2.6.18 to pv_ops dom0 2.6.31.x :)
>

blktap2 is now available in pvops dom0 kernels.

-- Pasi

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