Re: [Xen-devel] pvh+vcpus startup issue

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Wed, Feb 28, 2018 at 01:34:31PM +1300, xen@xxxxxxxxxxxxxxxxxx wrote:
> 
> Regards, Peter
> http://ri.mu Startups start here.  Hosting.  DNS.  Offsite backups.  
> Monitoring.  Email.
> 
> On 27/02/18 12:42 AM, Juergen Gross wrote:
> > On 22/02/18 21:38, xen@xxxxxxxxxxxxxxxxxx wrote:
> > > On 22/02/18 6:35 PM, Juergen Gross wrote:
> > > > On 22/02/18 05:37, xen@xxxxxxxxxxxxxxxxxx wrote:
> > > > > Hi.  I have a domU.  Its params file has: vcpus = 8.  It will start 
> > > > > with
> > > > > pv, but not type="pvh".  It will not start (on pvh) with vcpus = 7 or 
> > > > > 6
> > > > > or 5.  It does start with vcpus = 4.
> > > > > 
> > > > > I diffed the xl -v create logs, no difference there on either startup.
> > > > > 
> > > > > I grabbed the domU console output for a vcpus = 5 start (attached).  
> > > > > It
> > > > > dies right after:

Dies as in crashes? Or simply gets stuck and there's no further output?

> domU console:
> 
> [    0.001000] cpu 0 spinlock event irq 5
> [    0.001000] Performance Events: unsupported p6 CPU model 23 no PMU driver, 
> software events only.
> [    0.001000] Hierarchical SRCU implementation.
> [    0.001249] smp: Bringing up secondary CPUs ...
> [    0.001582] installing Xen timer for CPU 1
> [    0.001642] x86: Booting SMP configuration:
> [    0.001653] .... node  #0, CPUs:      #1
> [    0.003157] cpu 1 spinlock event irq 11
> [    0.003305] installing Xen timer for CPU 2
> [    0.003385]  #2
> [    0.005152] cpu 2 spinlock event irq 17
> [    0.005311] installing Xen timer for CPU 3
> [    0.005375]  #3
> [    0.007107] cpu 3 spinlock event irq 23
> [    0.007341] installing Xen timer for CPU 4

Which exact kernel version is this, and can you also send the .config
Linux kernel file?

> Xen domU params file:
> 
> cat /home/users/ot.glenn/params 
> kernel = "/home/users/ot.glenn/linux"
> memory = 2000
> swap = 128

This is not a xl option.

> name = "ot.glenn"
> ipaddr = "72.x.x.x"

Same here.

> disk = [ 'phy:/dev/users/ot.glenn+centos6-x86_64-4.ext3,xvda1,w', 
> 'phy:/dev/users/ot.glenn+swapfs.swp,xvda9,w' ]
> root = "/dev/xvda1 ro"
> restart = 'onreboot'
> console = 50089

And here.

> type = "pvh"
> vcpus = 5
> vif = [ 'mac=aa:00:0b:67:50:64,bridge=br0' ]

Thanks, Roger.

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