HEADS UP: Imported Xen 4.7: no blkback

Roger Pau Monné royger at FreeBSD.org
Thu Jun 16 15:29:26 UTC 2016


On Mon, Jun 13, 2016 at 07:26:30PM +0000, Marcin Cieslak wrote:
> On Mon, 13 Jun 2016, Roger Pau Monné wrote:
> 
> > On Fri, Jun 10, 2016 at 09:38:59PM +0000, Marcin Cieslak wrote:
> > > "?" does not work - it mostly causes a panic, the console is slow, but I managed
> > > to switch it to /dev/ada0p2, dmesg below:
> > 
> > This has now been reverted, so when I import the new RC this should be fixed 
> > and you won't need to change anything.
> 
> I am confused now - so with a new Xen kernel (not yet in ports) I can use
> /dev/xbd* devices again? They are in fact missing - xbd driver says "attaching as ada0"
> and I can mount it only as /dev/ada
> 
> > It seems like Windows PV drivers don't attach at all, or are you running 
> > Windows without the PV drivers?
> 
> Yes, I have. Those Windows partitions used to work properly without changes
> under xen 4.5. But we are too early - the problem is that even ovmf
> does not se them drives now, this is before Windows boots.
> 
> > Since you mention that the console is very slow, if you run 'top' on Dom0, 
> > do you see any process (eg: qemu) taking a lot of CPU time?
> 
> Yes,
> 
>  1635 root          7 100    0   241M   101M RUN      7:16  91.14% qemu-system-i386
> 
> or more
> 
> > Also, do you see Dom0 consuming a lot of CPU if you run 'xentop'?
> 
>   Domain-0 -----r        446  100.0    4194300   25.2   no limit       n/a     1    0        0        0    0        0        0        0          0          0    0
> 

Hello,

I've just imported Xen 4.7.0-rc6 into the ports tree, could you give it a 
try when you have a moment?

FWIW, I'm going on vacations until the 4th of July, and I will be mostly 
AFK.

Roger.


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