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 ... 

????? 

tia 
Gareth. 

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