Re: [Autotest] [KVM-AUTOTEST PATCH 11/28] KVM test: make_qemu_command(): catch IndexError when accessing self.netdev_id

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On 12/28/2010 03:23 PM, Jason Wang wrote:
> Michael Goldish writes:
>  > make_qemu_command() is sometimes called to see if a VM needs to be restarted
>  > using a different qemu command line.  When it's called with more NICs than the
>  > VM currently has, accessing self.netdev_id can raise an IndexError.
>  > 
>  > Signed-off-by: Michael Goldish <mgoldish@xxxxxxxxxx>
>  > ---
>  >  client/tests/kvm/kvm_vm.py |   12 +++++++-----
>  >  1 files changed, 7 insertions(+), 5 deletions(-)
>  > 
>  > diff --git a/client/tests/kvm/kvm_vm.py b/client/tests/kvm/kvm_vm.py
>  > index 6aa8eb4..aeb7448 100755
>  > --- a/client/tests/kvm/kvm_vm.py
>  > +++ b/client/tests/kvm/kvm_vm.py
>  > @@ -402,11 +402,14 @@ class VM:
>  >          vlan = 0
>  >          for nic_name in kvm_utils.get_sub_dict_names(params, "nics"):
>  >              nic_params = kvm_utils.get_sub_dict(params, nic_name)
>  > +            try:
>  > +                netdev_id = self.netdev_id[vlan]
>  > +            except IndexError:
>  > +                netdev_id = None
>  >              # Handle the '-net nic' part
>  >              mac = self.get_mac_address(vlan)
>  >              qemu_cmd += add_nic(help, vlan, nic_params.get("nic_model"), mac,
>  > -                                self.netdev_id[vlan],
>  > -                                nic_params.get("nic_extra_params"))
>  > +                                netdev_id, nic_params.get("nic_extra_params"))
>  >              # Handle the '-net tap' or '-net user' part
>  >              script = nic_params.get("nic_script")
>  >              downscript = nic_params.get("nic_downscript")
>  > @@ -420,9 +423,8 @@ class VM:
>  >              qemu_cmd += add_net(help, vlan, nic_params.get("nic_mode", "user"),
>  >                                  self.get_ifname(vlan),
>  >                                  script, downscript, tftp,
>  > -                                nic_params.get("bootp"), redirs,
>  > -                                self.netdev_id[vlan],
>  > -                                nic_params.get("netdev_extra_params"))
>  > +                                nic_params.get("bootp"), redirs, netdev_id,
>  > +                                nic_params.get("vhost") == "yes")
> 
> Why drop netdev_extra_params here, we've used it to enable vhost. And it seems

This is a rebase mistake.  I'll fix it and re-post the patch.  Thanks.

> the bootp is useless here as we've already used "-kernel" and "-initrd" to do
> the unattended installation.

If we decide to remove bootp we should do it in a different patch.

>  >              # Proceed to next NIC
>  >              vlan += 1
>  >  
>  > -- 
>  > 1.7.3.3
>  > 
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