This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


答复: [Xen-devel] some questions about the new blktap2 module

To: 'Pasi Kärkkäinen' <pasik@xxxxxx>
Subject: 答复: [Xen-devel] some questions about the new blktap2 module
From: fanliang <fanliang@xxxxxxxxxx>
Date: Mon, 21 Dec 2009 20:10:30 +0800
Cc: 'Jeremy Fitzhardinge' <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Mon, 21 Dec 2009 04:11:23 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20091221091656.GK16033@xxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcqCIS1bzM3DAtOvSs+uVS6mBPrKkAAFBCuw
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 ? 


发件人: Pasi Kärkkäinen [mailto:pasik@xxxxxx] 
发送时间: 2009年12月21日 17:17
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 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 :
>    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 ?


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

Xen-devel mailing list