Re: [Xen-users] Re: Xen 4.0 on gentoo hotplug scripts problem?

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Apr 09, 2010 at 08:45:44AM +0100, Andrew Lyon wrote:
> On Thu, Apr 8, 2010 at 10:20 PM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> > On Thu, Apr 08, 2010 at 02:14:17PM -0700, Boris Derzhavets wrote:
> >>    I believe profile should look like
> >>
> >>    memory=512
> >>    name='Gentoo-32-test'
> >>    vif=['bridge=eth(x)']
> >>    bootloader='/usr/bin/pygrub'
> >>    disk=['file:/mnt/tb1_store/Xen
> >>    VMs/Gentoo-32/Gentoo-32.sda1,xvda,w','phy:/dev/test/test,xvdb ,w']
> >>    extra='gentoo=nodevfs console=xvc0'
> >>
> >>    It's PV domU , so xvda,xvda,.....
> >>
> >>    Blktap driver is not important, no "tap:aio"
> >>
> >
> > Also I think Xen 4.0.0 needs to have "disk = [ 
> > "tap:tapdisk:aio:/path/images/disk.img,xvda,w" ]" to use blktap2.
> 
> I tried that syntax but it does not work:
> 
> name='Gentoo-32-test'
> vif=['bridge=eth0']
> bootloader='/usr/bin/pygrub'
> disk=[ "tap:tapdisk:aio:/mnt/tb1_store/Xen 
> VMs/Gentoo-32/Gentoo-32.sda1,xvda,w"]
> extra='gentoo=nodevfs console=xvc0'
> 
> Using config file "./Gentoo-32-test.cfg".
> Error: [Errno 2] No such file or directory: 'aio:/mnt/tb1_store/Xen
> VMs/Gentoo-32/Gentoo-32.sda1'
>

Hmm.. that's weird. The blktap2 syntax is correct based on the latest blktap2 
README here:
http://lxr.xensource.com/lxr/source/tools/blktap2/README
 
> I changed the config back to file:/ and tried again, the xm create
> process seemed to hang and the block script was stuck:
> 

Ok, so you have some general problem, not really blktap2 related..

> 
> root     14152  0.0  0.0  17596  1572 ?        S<   08:43   0:00
> /bin/bash /etc/xen/scripts/block add
> 
> eventually it errors  Error: Device 51712 (vbd) could not be
> connected. /etc/xen/scripts/block failed; error detected.
> 
> And the remove script is also stuck:
> 
> /bin/bash /etc/xen/scripts/block remove
> 

Did you install Xen 4.0.0 over some old version? 

Did you remove the old version first? Maybe your 4.0.0 is not 
completely/properly installed..

Pasi


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