Re: [Xen-devel] Driver domain - NEW issue: IRQ handling error

["B.G. Bruce" <bgb@xxxxxxxxx>]

Okay, after a little RTFM, I have the the frontend domain putting it's
vif in the correct backend domain (not dom0) and the backend domain
properly configured to be a backend domain (backend(netif)) in the sxp
config.  Don't I feel silly. However, running the ping test still kills
the nic.  If I run it from the front end domain, I get the disabling IRQ
18 error message in that dom.  If I run it external to the physical box,
the NIC still dies, however if I run the NICs from dom0, everything is
fine.  For testing purposes, I'm using the SAME xen0 for booting both
xen0 and the backend domain.

Regards,
B.


On Tue, 2005-02-01 at 13:01, B.G. Bruce wrote:
> Most disconcerting is that if I perform the same ping flood from the
> non-xen'd local box back to either dom0 or an ip assigned to the bridge
> in the driver domain, eventually (about 100,000 packets) the same result
> will occur.  The nic dies.  I can still ping between Dom0 and the driver
> domain, but there is no outside traffic.  When I run this against a
> stock linux kernel, there is no issue (1,000,000+ packets).
> 
> B.
> 
> On Tue, 2005-02-01 at 12:13, B.G. Bruce wrote:
> > Here are the dom config files:
> > 
> > B.
> > 
> > 
> > On Tue, 2005-02-01 at 09:10, Mark Williamson wrote:
> > > OK, I haven't heard of this issue.  Could you post your grub.conf for 
> > > dom0 and 
> > > your domain config file for the backend?
> > > 
> > > I'm not entirely clear on your configuration - how does your networking 
> > > setup 
> > > work?  What *does* work?
> > > 
> > > Cheers,
> > > Mark
> > > 
> > > On Tuesday 01 February 2005 13:11, B.G. Bruce wrote:
> > > > Okay, I'm using a bk snapshot of testing as of 20:40 (-4:00) yesterday
> > > > so I'm pretty sure this hasn't been addressed already.
> > > >
> > > > Symptom:
> > > >
> > > > While running a "ping -f <some local host outside the box>" from dom0
> > > > where the physical nic is in a driver dom (bridged), after about 1
> > > > minute the connection dies and won't restart.  (even with a reboot of
> > > > the driver domain).
> > > >
> > > > ex.  Dom0 vif1.0=10.1.1.1/24
> > > >      outside host=10.1.1.2/24
> > > >
> > > >         e1000 driver dom = bridge containing physical e1000(eth0) and 
> > > > virtual
> > > > nic (eth1)
> > > >
> > > > dmesg on dom0 gives:
> > > > irq 18: nobody cared!
> > > >  [<c012a4b7>]
> > > >  [<c012a547>]
> > > >  [<c0129f6c>]
> > > >  [<c010cd1b>]
> > > >  [<c0105c13>]
> > > >  [<c0108aa3>]
> > > >  [<c0106c05>]
> > > >  [<c0106c39>]
> > > >  [<c02e2621>]
> > > > handlers:
> > > > [<c020cdb6>]
> > > > [<cc94b867>]
> > > > Disabling IRQ #18
> > > >
> > > >
> > > > and a dmesg of the driver domain shows that the nic hooked IRQ 18:
> > > >
> > > > Intel(R) PRO/1000 Network Driver - version 5.5.4-k2-NAPI
> > > > Copyright (c) 1999-2004 Intel Corporation.
> > > > PCI: Obtained IRQ 18 for device 0000:01:01.0
> > > > PCI: Setting latency timer of device 0000:01:01.0 to 64
> > > > e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
> > > >
> > > > Am I correct in that the interrupt that should have been sent to the
> > > > driver domain was instead sent to dom0?  or what happened?  If I don't
> > > > have the driver dom setup correctly, would someone please explain what
> > > > I'm doing wrong?
> > > >
> > > > Thanks,
> > > > B.
> > > >
> > > >
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> 
> 
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