[Libvir] Re; virDomainBlockStats
Gareth Bult
gareth at encryptec.net
Thu Jan 17 19:08:44 UTC 2008
>root at bronze-1:~# ls -l /dev/xvda*
>ls: /dev/xvda*: No such file or directory
(!)
----- Original Message -----
step 3.: "Richard W.M. Jones" <rjones at redhat.com>
To: "Gareth Bult" <gareth at encryptec.net>
Cc: libvir-list at redhat.com
Sent: 17 January 2008 17:39:25 o'clock (GMT) Europe/London
Subject: Re: [Libvir] Re; virDomainBlockStats
Gareth Bult wrote:
> Hi,
>
> I've a number of servers running XEN and am trying to write some code to
> monitor them through libvirt.
> (Xeon/Dual Core/Ubuntu Gutsy/Xen 3.1)
>
> All was going well until I got to virDomainBlockStats and it simply
> refused to accept my coding ..
>
> My solution (the code now works) is to change the following;
>
> src/stats_linux.c:
>
> #ifndef XENVBD_MAJOR
> #define XENVBD_MAJOR 3 // <--- I changed this!
> /*#define XENVBD_MAJOR 202*/
> #endif
>
> device = XENVBD_MAJOR * 256 + 1 + minor /* * 16 */; <-- this too!
>
> It now seems to give me some meaningful numbers without feeding my any
> error messages.
> Can anyone tell me "why" I needed to do this?
>
> I'm using "xvda" as the device path .. tried every other device name I
> could think of with out any good results ...
Gareth,
What does it print when you do:
ls -l /dev/xvda*
from within the guest?
Rich.
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