Re: [Xen-users] All domU blocked

[Ernst Bachmann <e.bachmann@xxxxxxxx>]

On Tuesday 12 September 2006 14:03, Tom Z. Napierala wrote:
> Dnia Tuesday 12 September 2006 12:23, Ernst Bachmann napisaÅ:
> > On Tuesday 12 September 2006 13:10, Tom Z. Napierala wrote:
> > > Hi,
> > > I've notice strange thing, all my domUs are listed as blocked:
> > > Name                              ID Mem(MiB) VCPUs State  Time(s)
> > > Domain-0                           0      251     2 r-----  4166.2
> > > g01                               28      256     2 -b----   508.3
> > > g02                               26      128     1 -b----   235.7
> > > g03                               35      512     1 -b----    17.2
> > >
> > > although they are running fine.
> > > I'm just wondering what can be wrong, because I need proper reporting
> > > for some monitoring tools. Host system is Ubuntu Dapper Server running
> > > Xen 3.0.1 binary,  guests Debians, Ubuntus.
> > > Any ideas?
> >
> > You got a single-CPU system, right?
>
> No, it's SMP system.
>
> > The moment you run the xm command, the CPU is obviously with Domain-0,
> > producing your output. That means, all other domains don`t have the CPU
> > right now, hence are listed as blocked.
> >
> > The only chance to see a domU in a state other than "b" is to use a SMP
> > system. :)
>
> That's interesting, I have to investigate this thoroughly.
> But as I mentioned above, it's SMP system, but I'm not using any pin
> techniques , so all domains are with default vcpu settings.

well, they also show as blocked while waiting for IO or idling, maybe retry 
with a higher load on your domUs?

Just to show it works:
# xm list
Name                              ID Mem(MiB) VCPUs State  Time(s)
Domain-0                           0     8672     8 r----- 1313001.2
cmcom01                           11     1024     7 -b---- 61838.4
cmcom02                           16     1024     4 r----- 11884.8
cmdb03                            14     1024     7 r----- 258300.1
maudbrm                           10     3400     7 r----- 586934.1
mausc01                            7     1024     7 -b---- 121974.2

/Ernst

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