I see.
>From /pub/scm / linux/kernel/git/jeremy/xen.git / tree I can see that the
>new kernel tree discard the old blktap source files , instead by the new
>blktap2 files.
Thanks again.
-----邮件原件-----
发件人: Pasi Kärkkäinen [mailto:pasik@xxxxxx]
发送时间: 2009年12月21日 20:26
收件人: fanliang
抄送: xen-devel@xxxxxxxxxxxxxxxxxxx; 'Jeremy Fitzhardinge'
主题: Re: ??????: [Xen-devel] some questions about the new blktap2 module
On Mon, Dec 21, 2009 at 08:10:30PM +0800, fanliang wrote:
> Thank you a lot for your attention .
> I got the dom0 kernel source code from xensource.com, and I don't know
> whether it's the same with pv_ops dom0 source tree . I'm wondering that how
> can people use VHD devices under the new blktap2 if he use SUSE11 as dom0 ,
> whose kernel is 2.6.27 . In my mind, the new blktap2 module is developed
> matching with kernel 2.6.18 . For example, blktap2 includes lots header files
> from linux-2.6.18. Is this right ?
>
pv_ops dom0 changelog is here:
http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/master
That's the tree xen-unstable automatically fetches/uses.
SLES11 2.6.27 Xen dom0 kernel is forward-ported from 2.6.18-xen.
I'm not sure if Novell ported blktap2 aswell.
-- Pasi
>
>
>
> -----????????????-----
> ?????????: Pasi Kärkkäinen [mailto:pasik@xxxxxx]
> ????????????: 2009???12???21??? 17:17
> ?????????: fanliang
> ??????: xen-devel@xxxxxxxxxxxxxxxxxxx; Jeremy Fitzhardinge
> ??????: Re: [Xen-devel] some questions about the new blktap2 module
>
> On Mon, Dec 21, 2009 at 05:00:56PM +0800, fanliang wrote:
> > Hi, all:
> > I have some questions when read the code of the new blktap2 module.
> > One is in function tapdisk_vbd_map_device ( ) . In this function , the
> > userspace proccess tapdisk2 used ioctl like this :
> > ioctl(ring->fd, BLKTAP_IOCTL_SETMODE, BLKTAP_MODE_INTERPOSE);
> > From the context , we can get that "ring->fd " is the file handle of the
> > ring-device [/dev/xen/blktap-2/blktap[minor] ] . In the blktap2 driver
> > codes , I find that blktap_ring_ioctl() didn't implement the
> > BLKTAP_IOCTL_SETMODE ioctl case . I used xen-unstable code package and
> > linux-2.6.18-xen-3.4.2 code package.
> > So my question is :
> > 1, Is blktap2 code in xen-unstable not match with linux-2.6.18-xen-3.4.2
> > ?
> > 2, Any body used VHD disk with blktap2 ?
> >
>
> Hello,
>
> Afaik blktap2 is not yet ready/working on pv_ops dom0 tree (xen-unstable uses
> pv_ops dom0).
>
> Jeremy can possibly comment more about the status of blktap2.
>
> -- Pasi
>
>
>
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