Open Stack

Hi Anthony,

> Could you run the following command after you tried to start a guest?
> 
> $ xenstore-ls /local/domain/0/libxl
> disable_udev = "1"
> 
> We should at least have disable_udev in the output.

Yes, I can confirm the output: 
root at hp3:~# xenstore-ls /local/domain/0/libxl
disable_udev = "1"

> I've tried to follow the guide, and install OpenStack on Ubuntu 14.04 but I
> can not reproduce this. I've stop after installing neutron, and try to
> start a guest. I may have miss something.

Okay thanks, I think it's more likely that I may have missed something
since it doesn't work here :)

> Otherwise, to work arround this bug we could modify the script to set down
> the interface before trying to rename it:
> In /etc/xen/scripts/vif-common.sh, search the function rename_vif() and add
> in the begining this:
>   ip link set "$dev" down
> And don't forget to remove the "exit 0" in /etc/xen/scripts/vif-bridge that
> we've added earlier.

I removed the exit line and added the ip link command to the rename_vif()
function, however, I then receive the same initial error and the instance
fails to boot:

libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: /etc/xen/scripts/vif-bridge online [-1] exited with error status 1
libxl: error: libxl_device.c:1085:device_hotplug_child_death_cb: script: ip link set vif4.0 name tap90f11177-24 failed
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x7f37c800a050: deregister unregistered
libxl: error: libxl_create.c:1226:domcreate_attach_vtpms: unable to add nic devices

Thanks again for helping work through this,
Geoffrey


----- Original Message -----
> From: "Anthony PERARD" <anthony.perard at citrix.com>
> To: "Geoffrey Tran" <gtran at isi.edu>
> Cc: openstack at lists.openstack.org
> Sent: Friday, July 24, 2015 8:24:52 AM
> Subject: Re: [Openstack] Spawning Issue with Juno, Neutron, Xen and Libvirt
> 
> On Thu, Jul 23, 2015 at 09:20:13PM -0400, Geoffrey Tran wrote:
> > Hi Anthony,
> > 
> > > Ok, let's debug that further. Once the VM have booted, can you check the
> > > state of the network interface by running the following command?
> > > 
> > > ip link
> > > brctl show
> > 
> > The output is below:
> > root at hp3:~# ip link
> [...]
> > 24: vif2.0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
> > state UP mode DEFAULT group default qlen 32
> >     link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
> 
> This interface should be DOWN, since the vif-bridge script is responsible
> to configure it and set it UP. And I don't see what could change its state.
> 
> Could you run the following command after you tried to start a guest?
> 
> $ xenstore-ls /local/domain/0/libxl
> disable_udev = "1"
> 
> We should at least have disable_udev in the output.
> 
> > > Yes, all in one. I've enable those neutron services via devstack:
> > > q-agt q-dhcp q-lbaas q-meta q-metering q-svc q-vpn q-l3 q-fwaas
> > 
> > Okay thanks for verifying.  I should note that in this system, I
> > deployed openstack module by module instead of devstack, as per:
> > http://docs.openstack.org/juno/install-guide/install/apt/content/
> 
> I've tried to follow the guide, and install OpenStack on Ubuntu 14.04 but I
> can not reproduce this. I've stop after installing neutron, and try to
> start a guest. I may have miss something.
> 
> 
> Otherwise, to work arround this bug we could modify the script to set down
> the interface before trying to rename it:
> In /etc/xen/scripts/vif-common.sh, search the function rename_vif() and add
> in the begining this:
>   ip link set "$dev" down
> And don't forget to remove the "exit 0" in /etc/xen/scripts/vif-bridge that
> we've added earlier.
> 
> --
> Anthony PERARD
>