Re: [Xen-devel] dom0-cpus problem with Xen 3.4.1-rc6

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Jul 22, 2009 at 06:18:37PM +0300, Nerijus Narmontas wrote:
> On Tue, Jul 21, 2009 at 2:01 PM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> 
> > On Tue, Jul 21, 2009 at 01:53:25PM +0300, Nerijus Narmontas wrote:
> > > Hello,
> > > If I set (dom0-cpus 1) in /etc/xen/xend-config.sxp, after I gracefully
> > > shutdown domU, the domain stays in ---s- state.
> > >
> > > Is this fixed in 3.4.1-rc8?
> > >
> >
> > Hello.
> >
> > Please don't hijack threads - you replied to a thread about network
> > problems
> > and gplpv drivers. Always start a new thread for new subjects.
> >
> > What version are you seeing this behaviour with? Xen 3.4.0 ? What dom0
> > kernel version?
> >
> > -- Pasi
> >
> 
> Sorry for the threads thing.
> 
> root@xen1:/# more /etc/xen/xend-config.sxp | grep cpu
> # In SMP system, dom0 will use dom0-cpus # of CPUS
> # If dom0-cpus = 0, dom0 will take all cpus available
> (dom0-cpus 1)
> 
> root@xen1:/# xm dmesg | grep Command
> (XEN) Command line: console=com2 com2=115200,8n1
> 
> root@xen1:/# xm dmesg | grep VCPUs
> (XEN) Dom0 has maximum 8 VCPUs
> 
> root@xen1:/# xm vcpu-list
> Name                                ID  VCPU   CPU State   Time(s) CPU
> Affinity
> Domain-0                             0     0     5   r--       9.2 any cpu
> Domain-0                             0     1     -   --p       1.8 any cpu
> Domain-0                             0     2     -   --p       1.7 any cpu
> Domain-0                             0     3     -   --p       1.6 any cpu
> Domain-0                             0     4     -   --p       1.4 any cpu
> Domain-0                             0     5     -   --p       1.4 any cpu
> Domain-0                             0     6     -   --p       1.5 any cpu
> Domain-0                             0     7     -   --p       1.3 any cpu
> 
> root@xen1:/# xm create /etc/xen/dc3.conf
> Using config file "/etc/xen/dc3.conf".
> Started domain dc3 (id=1)
> 
> root@xen1:/# xm vcpu-list
> Name                                ID  VCPU   CPU State   Time(s) CPU
> Affinity
> Domain-0                             0     0     7   r--      36.5 any cpu
> Domain-0                             0     1     -   --p       1.8 any cpu
> Domain-0                             0     2     -   --p       1.7 any cpu
> Domain-0                             0     3     -   --p       1.6 any cpu
> Domain-0                             0     4     -   --p       1.4 any cpu
> Domain-0                             0     5     -   --p       1.4 any cpu
> Domain-0                             0     6     -   --p       1.5 any cpu
> Domain-0                             0     7     -   --p       1.3 any cpu
> dc3                                  1     0     0   -b-      15.2 0
> dc3                                  1     1     1   -b-       6.8 1
> dc3                                  1     2     2   -b-       7.5 2
> dc3                                  1     3     3   -b-       8.0 3
> 
> After HVM Windows domU shutdown, it stays in ---s- state.
> 
> root@xen1:/# xm li
> Name                                        ID   Mem VCPUs      State
> Time(s)
> Domain-0                                     0 24106     1     r-----
> 58.7
> dc3                                          1  8192     4     ---s--
> 59.0
> 
> root@xen1:/# xm vcpu-list
> Name                                ID  VCPU   CPU State   Time(s) CPU
> Affinity
> Domain-0                             0     0     4   r--      48.4 any cpu
> ...
> Domain-0                             0     7     -   --p       1.3 any cpu
> dc3                                  1     0     0   ---      20.0 0
> dc3                                  1     1     1   ---      10.9 1
> dc3                                  1     2     2   ---      15.2 2
> dc3                                  1     3     3   ---      12.9 3
> 
> The problem goes away if I tell Xen to boot with options dom0_max_vcpus=1
> dom0_vcpus_pin.
> 
> What's the difference between Xen boot options to limit vcpus for dom0 to
> /etc/xen/xend-config.sxp?
> 
> I am running Xen 3.4.1-rc6 version.

OK.

What dom0 kernel version are you running? 

-- Pasi

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