Did this get solved with the change you submitted to Xen?
On 25 January 2017 at 11:58, Alexander Nusov <alexander.nu...@nfvexpress.com
> Cool, many thanks!
> ---- On Wed, 25 Jan 2017 14:50:51 +0300 *Roger Pau Monné
> <roger....@citrix.com <roger....@citrix.com>>* 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
> 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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