Cool, many thanks!



---- On Wed, 25 Jan 2017 14:50:51 +0300 Roger Pau Monné 
<> wrote ----

On Wed, Jan 25, 2017 at 02:20:55PM +0300, Alexander Nusov wrote: 

> Got it, thanks. 




> I found a workaround to avoid XENBUS delay in Linux DomUs by adding 
xen_platform_pci = 0 to the configuration file. 


> So FreeBSD 11.0 Dom0 can boot Linux guests and Windows Server (FreeBSD 
DomU still stuck on xenbusb_nop_confighook_cb) from QCOW2 images (also works 
with QCOW2 overlay images) 



On FreeBSD you can boot with QCOW2 by not setting "xen_platform_pci = 0" on the 

guest config file and adding "hw.xen.disable_pv_disks=1" to the 

/boot/loader.conf file of the guest. This will prevent FreeBSD from using the 

PV disk, but you will still get the PV network interfaces. 



> Can you tell me please what is the disadvantage of not using /dev/xen/vbd 
devices and drivers in guests? like slow I/O? 


Slow IO only. 


> May it lead to data corruption? 



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