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Re: [Xen-users] Error: Device 0 (vif) could not be connected. Hotplug sc

from [François Delpierre] [Permanent Link][Original]
To: xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Error: Device 0 (vif) could not be connected. Hotplug scripts not working.
From: François Delpierre <xensource@xxxxxxxxxx>
Date: Wed, 29 Jul 2009 23:55:09 +0200 (CEST)
Cc: Alberto Asuero Arroyo <albertoasuero@xxxxxxxxx>
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Hi, I had exactly the same problem.
Check this :
http://lists.xensource.com/archives/html/xen-users/2009-07/msg00688.html

This is really an uggly solution as I don't know what I bypass, but it saved me after 3 days getting blocked on that problem.
My VMs are running perfectly for many days now.

I hope to get some time tomorrow to synchronize with the latest RC and check if it's fixed or not...
If not, we should go to dev mailing list.

Regards,


----- Original Message -----
From: "Alberto Asuero Arroyo" <albertoasuero@xxxxxxxxx>
To: "Muriel" <muriel.cabianca@xxxxxxx>
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Sent: Tuesday, 28 July, 2009 16:09:05 GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna
Subject: Re: [Xen-users] Error: Device 0 (vif) could not be connected. Hotplug scripts not working.

I had the same issue.

I could fix it but I think it's not the best way.

I've replaced the scripts of xen-3.4.1-rc7 from xen-3.3.1's scripts. This scripts are the functionality of xen 3.3.1 but it works.

Regards, Alberto


On Wed, Jul 22, 2009 at 12:07 PM, Muriel <muriel.cabianca@xxxxxxx> wrote:
Muriel ha scritto:

Hi all,
when i create a guest OS i am getting this error:
Error: Device 0 (vif) could not be connected. Hotplug scripts not working.

I have looked for a possible solution without success.

The sistem is a Centos 5.2 x86_64, the xen version is 3.4, the dom0 kernel is 2.6.27.19-5 (from xensource).
The domU is a Centos 5.3 x86_64, kernel 2.6.18-128.1.6.el5xen

xend-config.sxp:
(xend-unix-server yes)
(xend-relocation-server yes)
(network-script 'network-bridge bridge=eth0') #i have specified 'bridge=eth0 for test
(vif-script 'vif-bridge bridge=eth0')
(dom0-min-mem 196)
(enable-dom0-ballooning yes)
(dom0-cpus 0)
(vncpasswd '')


the domU config file:
bootloader = '/usr/bin/pygrub'
memory = 256
name = "blade_test"
vcpus = 2
vif = [ 'bridge=eth0' ] #doesn't work vif = []
dhcp="dhcp"
disk = [ 'tap:aio:/home/xen/blade8_disk,xvda1,w!' ]
vnc         = '0'
vncviewer   = '0'
stdvga      = '0'

on_reboot   = 'restart'
on_crash    = 'preserve'
extra = "3"


udev:
root       682  0.0  0.0  12992  1172 ?        S<s  16:41   0:00 /sbin/udevd -d

brctl show:
bridge name     bridge id               STP enabled     interfaces
eth0            8000.0022649c123a       no              peth0(loglevel DEBUG)


When i create the domU i see the grub console, then i choose a kernel and the console hangs.
udevmonitor say:
UEVENT[1248188758.795432] add@/devices/xen-backend/tap-3-51713
UDEV  [1248188758.796432] add@/devices/xen-backend/tap-3-51713
UEVENT[1248188758.810433] change@/devices/xen-backend/tap-3-51713
UEVENT[1248188758.811433] add@/block/backdevb
UEVENT[1248188758.811433] add@/class/bdi/253:1
UDEV  [1248188758.812433] add@/class/bdi/253:1
UEVENT[1248188758.833433] add@/devices/xen-backend/vif-3-0
UDEV  [1248188758.836433] add@/devices/xen-backend/vif-3-0
UEVENT[1248188758.837433] add@/class/net/vif3.0
UEVENT[1248188758.837433] online@/devices/xen-backend/vif-3-0
UEVENT[1248188758.920435] add@/devices/xen-backend/console-3-0
UDEV  [1248188758.922435] add@/devices/xen-backend/console-3-0
UDEV  [1248188759.000437] change@/devices/xen-backend/tap-3-51713
UDEV  [1248188759.031438] add@/block/backdevb
UDEV  [1248188759.039438] online@/devices/xen-backend/vif-3-0
UDEV  [1248188759.042438] add@/class/net/vif3.0


brctl show:
bridge name     bridge id               STP enabled     interfaces
eth0            8000.0022649c123a       no                 peth0
                                                                                   vif3.0

ifconfig vif3.0            Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
        inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
        UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
        RX packets:0 errors:0 dropped:0 overruns:0 frame:0
        TX packets:0 errors:0 dropped:6573 overruns:0 carrier:0
        collisions:0 txqueuelen:32
        RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)


The xend.log:
[2009-07-21 17:05:55 9102] DEBUG (XendDomainInfo:92) XendDomainInfo.create(['vm', ['name', 'blade_test'], ['memory', 256], ['on_poweroff', 'destroy'], ['on_reboot', 'restart'], ['on_crash', 'preserve'], ['vcpus', 2], ['on_xend_start', 'ignore'], ['on_xend_stop', 'ignore'], ['bootloader', '/usr/bin/pygrub'], ['bootloader_args', ''], ['image', ['linux', ['ip', ':127.0.255.255::::eth0:dhcp'], ['videoram', 4], ['args', '3']]], ['s3_integrity', 1], ['device', ['tap', ['uname', 'tap:aio:/home/xen/blade8_disk'], ['dev', 'xvda1'], ['mode', 'w!']]], ['device', ['vif', ['bridge', 'eth0']]]])                                                                                                                                    
[2009-07-21 17:05:55 9102] DEBUG (XendDomainInfo:2295) XendDomainInfo.constructDomain                                                                                              
[2009-07-21 17:05:55 9102] DEBUG (balloon:166) Balloon: 263864 KiB free; need 4096; done.                                                                                          
[2009-07-21 17:05:55 9102] DEBUG (XendDomain:452) Adding Domain: 3                                                                                                                  
[2009-07-21 17:05:55 9102] DEBUG (XendDomainInfo:2496) XendDomainInfo.initDomain: 3 256                                                                                            
[2009-07-21 17:05:55 10888] DEBUG (XendBootloader:113) Launching bootloader as ['/usr/bin/pygrub', '--args=ip=:127.0.255.255::::eth0:dhcp 3', '--output=/var/run/xend/boot/xenbl.25136', '/home/xen/blade8_disk'].                                                                                                                                                      
[2009-07-21 17:05:58 9102] DEBUG (XendDomainInfo:2520) _initDomain:shadow_memory=0x0, memory_static_max=0x10000000, memory_static_min=0x0.                                         [2009-07-21 17:05:58 9102] DEBUG (balloon:166) Balloon: 263740 KiB free; need 263168; done.                                                                                        
[2009-07-21 17:05:58 9102] INFO (image:173) buildDomain os=linux dom=3 vcpus=2                                                                                                      
[2009-07-21 17:05:58 9102] DEBUG (image:661) domid          = 3                                                                                                                    
[2009-07-21 17:05:58 9102] DEBUG (image:662) memsize        = 256                                                                                                                  
[2009-07-21 17:05:58 9102] DEBUG (image:663) image          = /var/run/xend/boot/boot_kernel.jUkXPI                                                                                
[2009-07-21 17:05:58 9102] DEBUG (image:664) store_evtchn   = 1                                                                                                                    
[2009-07-21 17:05:58 9102] DEBUG (image:665) console_evtchn = 2                                                                                                                    
[2009-07-21 17:05:58 9102] DEBUG (image:666) cmdline        = ro root=/dev/sda1 console=xvc0 ip=:127.0.255.255::::eth0:dhcp 3                                                      [2009-07-21 17:05:58 9102] DEBUG (image:667) ramdisk        = /var/run/xend/boot/boot_ramdisk.Z_Aa4S                                                                                
[2009-07-21 17:05:58 9102] DEBUG (image:668) vcpus          = 2                                                                                                                    
[2009-07-21 17:05:58 9102] DEBUG (image:669) features       =                                                                                                                      
[2009-07-21 17:05:58 9102] DEBUG (image:670) flags          = 0                                                                                                                    
[2009-07-21 17:05:58 9102] INFO (XendDomainInfo:2159) createDevice: tap : {'bootable': 1, 'uname': 'tap:aio:/home/xen/blade8_disk', 'mode': 'w!', 'dev': 'xvda1', 'uuid': 'bf7c579e-7a61-9b8f-ff83-7764745e776a'}                                                                                                                                                      
[2009-07-21 17:05:58 9102] DEBUG (DevController:95) DevController: writing {'virtual-device': '51713', 'device-type': 'disk', 'protocol': 'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend': '/local/domain/0/backend/tap/3/51713'} to /local/domain/3/device/vbd/51713.                                                                                        
[2009-07-21 17:05:58 9102] DEBUG (DevController:97) DevController: writing {'domain': 'blade_test', 'frontend': '/local/domain/3/device/vbd/51713', 'uuid': 'bf7c579e-7a61-9b8f-ff83-7764745e776a', 'bootable': '1', 'dev': 'xvda1', 'state': '1', 'params': 'aio:/home/xen/blade8_disk', 'mode': 'w!', 'online': '1', 'frontend-id': '3', 'type': 'tap'} to /local/domain/0/backend/tap/3/51713.                                                                                                                                                          
[2009-07-21 17:05:58 9102] INFO (XendDomainInfo:2159) createDevice: vif : {'bridge': 'eth0', 'mac': '00:16:3e:3e:73:d9', 'uuid': '31fff34e-05e9-4ef0-65b3-c9d25a654ffb'}           [2009-07-21 17:05:58 9102] DEBUG (DevController:95) DevController: writing {'mac': '00:16:3e:3e:73:d9', 'handle': '0', 'protocol': 'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend': '/local/domain/0/backend/vif/3/0'} to /local/domain/3/device/vif/0.                                                                                                        
[2009-07-21 17:05:58 9102] DEBUG (DevController:97) DevController: writing {'bridge': 'eth0', 'domain': 'blade_test', 'handle': '0', 'uuid': '31fff34e-05e9-4ef0-65b3-c9d25a654ffb', 'script': '/etc/xen/scripts/vif-bridge bridge=eth0', 'mac': '00:16:3e:3e:73:d9', 'frontend-id': '3', 'state': '1', 'online': '1', 'frontend': '/local/domain/3/device/vif/0'} to /local/domain/0/backend/vif/3/0.
[2009-07-21 17:05:58 9102] DEBUG (XendDomainInfo:3051) Storing VM details: {'on_xend_stop': 'ignore', 'shadow_memory': '0', 'uuid': 'af2582d3-8a73-c57e-328d-e5b23c84fedc', 'on_reboot': 'restart', 'start_time': '1248188758.83', 'on_poweroff': 'destroy', 'bootloader_args': '', 'on_xend_start': 'ignore', 'on_crash': 'preserve', 'xend/restart_count': '0', 'vcpus': '2', 'vcpu_avail': '3', 'bootloader': '/usr/bin/pygrub', 'image': "(linux (kernel ) (args 'ip=:127.0.255.255::::eth0:dhcp 3') (videoram 4) (notes (FEATURES 'writable_page_tables|writable_descriptor_tables|auto_translated_physmap|pae_pgdir_above_4gb|supervisor_mode_kernel') (VIRT_BASE 18446744071562067968) (GUEST_VERSION 2.6) (PADDR_OFFSET 18446744071562067968) (GUEST_OS linux) (HYPERCALL_PAGE 18446744071564189696) (LOADER generic) (ENTRY 18446744071564165120) (XEN_VERSION xen-3.0)))", 'name': 'blade_test'}
[2009-07-21 17:05:58 9102] DEBUG (XendDomainInfo:1621) Storing domain details: {'console/ring-ref': '4252968', 'image/entry': '18446744071564165120', 'console/port': '2', 'store/ring-ref': '4252969', 'image/loader': 'generic', 'vm': '/vm/af2582d3-8a73-c57e-328d-e5b23c84fedc', 'control/platform-feature-multiprocessor-suspend': '1', 'image/guest-os': 'linux','cpu/1/availability': 'online', 'image/features/writable-descriptor-tables': '1', 'image/virt-base': '18446744071562067968', 'memory/target': '262144', 'image/guest-version': '2.6', 'image/features/supervisor-mode-kernel': '1', 'console/limit': '1048576', 'image/paddr-offset': '18446744071562067968', 'image/hypercall-page': '18446744071564189696', 'cpu/0/availability': 'online', 'image/features/pae-pgdir-above-4gb': '1', 'image/features/writable-page-tables': '1', 'console/type': 'xenconsoled', 'image/features/auto-translated-physmap': '1', 'name': 'blade_test', 'domid': '3', 'image/xen-version': 'xen-3.0', 'store/port': '1'}
[2009-07-21 17:05:58 9102] DEBUG (DevController:95) DevController: writing {'protocol': 'x86_64-abi', 'state': '1', 'backend-id': '0', 'backend': '/local/domain/0/backend/console/3/0'} to /local/domain/3/device/console/0.
[2009-07-21 17:05:58 9102] DEBUG (DevController:97) DevController: writing {'domain': 'blade_test', 'frontend': '/local/domain/3/device/console/0', 'uuid': 'bfa86a07-8c0e-2e76-45d4-d7d48564d955', 'frontend-id': '3', 'state': '1', 'location': '2', 'online': '1', 'protocol': 'vt100'} to /local/domain/0/backend/console/3/0.
[2009-07-21 17:05:58 9102] DEBUG (DevController:139) Waiting for devices vif.
[2009-07-21 17:05:58 9102] DEBUG (XendDomainInfo:1708) XendDomainInfo.handleShutdownWatch
[2009-07-21 17:05:58 9102] DEBUG (DevController:144) Waiting for 0.
[2009-07-21 17:05:58 9102] DEBUG (DevController:629) hotplugStatusCallback /local/domain/0/backend/vif/3/0/hotplug-status.
[2009-07-21 17:07:38 9102] DEBUG (XendDomainInfo:2723) XendDomainInfo.destroy: domid=3
[2009-07-21 17:07:38 9102] DEBUG (XendDomainInfo:2198) Destroying device model
[2009-07-21 17:07:38 9102] DEBUG (XendDomainInfo:2205) Releasing devices
[2009-07-21 17:07:38 9102] DEBUG (XendDomainInfo:2218) Removing vif/0
[2009-07-21 17:07:38 9102] DEBUG (XendDomainInfo:1133) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2009-07-21 17:07:38 9102] DEBUG (XendDomainInfo:2218) Removing vbd/51713
[2009-07-21 17:07:38 9102] DEBUG (XendDomainInfo:1133) XendDomainInfo.destroyDevice: deviceClass = tap, device = vbd/51713
[2009-07-21 17:07:38 9102] DEBUG (XendDomainInfo:2218) Removing console/0
[2009-07-21 17:07:38 9102] DEBUG (XendDomainInfo:1133) XendDomainInfo.destroyDevice: deviceClass = console, device = console/0
[2009-07-21 17:07:39 9102] DEBUG (XendDomainInfo:2203) No device model
[2009-07-21 17:07:39 9102] DEBUG (XendDomainInfo:2205) Releasing devices
[2009-07-21 17:07:39 9102] DEBUG (DevController:629) hotplugStatusCallback /local/domain/0/backend/vif/3/0/hotplug-status.
[2009-07-21 17:07:39 9102] DEBUG (DevController:629) hotplugStatusCallback /local/domain/0/backend/vif/3/0/hotplug-status.
[2009-07-21 17:07:39 9102] DEBUG (DevController:629) hotplugStatusCallback /local/domain/0/backend/vif/1/0/hotplug-status.
[2009-07-21 17:07:39 9102] DEBUG (DevController:629) hotplugStatusCallback /local/domain/0/backend/vif/2/0/hotplug-status.
[2009-07-21 17:07:39 9102] DEBUG (DevController:629) hotplugStatusCallback /local/domain/0/backend/vif/3/0/hotplug-status.



If i comment the line with vif = [] in domU config file the sistem boot correctly.


Any idea?

Thanks in advance,
Muriel


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OK there is something wrong in the scripts. If i create the vm without vif it correctly start. When the machine is running, if i add there a card i can see and configure: it works, i can ping the gw.
But when the vif creation timeout in the script occured the card is removed.

How can i fix it?


Muriel


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