Subhabrata Bhattacharya
2006-Mar-17 05:08 UTC
[Xen-users] VmError: Device 0 (vif) could not be connected. Backend device not found.
List,
For the first time I am getting this message "Backend device not
found" when I try to create a new VM out of my custom made linux
filesystem.
The VM gets created and it remains in a pause state.
[root@sheet /usr/local/src]$xm list
Name ID Mem(MiB) VCPUs State Time(s)
Domain-0 0 414 1 r----- 481.8
sheet-vm01 6 32 1 --p--- 0.0
After sometime
[root@sheet /usr/local/src]$xm list
Name ID Mem(MiB) VCPUs State Time(s)
Domain-0 0 414 1 r----- 481.8
Zombie-sheet-vm01 6 32 1 --p--- 0.0
And aftersometime it dies out
[root@sheet /usr/local/src]$xm list
Name ID Mem(MiB) VCPUs State Time(s)
Domain-0 0 414 1 r----- 481.8
I however can boot cleanly with this filesystem in a plain Linux 2.6.12 kernel.
$xm create -c xen-dom1
/usr/lib/python/xen/xm/create.py:30: RuntimeWarning: Python C API
version mismatch for module xen.lowlevel.xc: This Python has API
version 1011, module xen.lowlevel.xc has version 1012.
import xen.lowlevel.xc
Using config file "xen-dom1".
Error: Device 0 (vif) could not be connected. Backend device not found.
[root@sheet /home/vmconfs]$cat /var/log/xend.log
[2006-03-17 09:49:12 xend.XendDomainInfo] DEBUG (XendDomainInfo:176)
XendDomainInfo.create([''vm'', [''name'',
''sheet-vm01''], [''memory'',
''32''],
[''image'', [''linux'',
[''kernel'', ''/boot/vmlinuz-2.6.12.6-xenU''],
[''ramdisk'',
''/boot/initrd-2.6.12.6-xen.img''], [''ip'',
''10.74.64.112:1.2.3.4:10.74.64.1:255.255.255.0:sheet-vm01:eth0:off''],
[''root'', ''/dev/hda12 ro''],
[''args'', ''3''], [''vcpus'',
''1''], [''vcpus'',
''1''], [''boot'', ''c''],
[''display'', '':0.0''],
[''nics'', ''1'']]],
[''device'',
[''vbd'', [''uname'',
''phy:hda12''], [''dev'',
''hda12''], [''mode'', ''w'']]],
[''device'', [''vif'']]])
[2006-03-17 09:49:12 xend.XendDomainInfo] DEBUG (XendDomainInfo:281)
parseConfig: config is [''vm'', [''name'',
''sheet-vm01''], [''memory'',
''32''], [''image'', [''linux'',
[''kernel'', ''/boot/vmlinuz-2.6.12.6-xenU''],
[''ramdisk'',
''/boot/initrd-2.6.12.6-xen.img''], [''ip'',
''10.74.64.112:1.2.3.4:10.74.64.1:255.255.255.0:sheet-vm01:eth0:off''],
[''root'', ''/dev/hda12 ro''],
[''args'', ''3''], [''vcpus'',
''1''], [''vcpus'',
''1''], [''boot'', ''c''],
[''display'', '':0.0''],
[''nics'', ''1'']]],
[''device'',
[''vbd'', [''uname'',
''phy:hda12''], [''dev'',
''hda12''], [''mode'', ''w'']]],
[''device'', [''vif'']]]
[2006-03-17 09:49:12 xend.XendDomainInfo] DEBUG (XendDomainInfo:373)
parseConfig: result is {''ssidref'': None,
''uuid'': None, ''on_crash'':
None, ''on_reboot'': None, ''image'':
[''linux'', [''kernel'',
''/boot/vmlinuz-2.6.12.6-xenU''], [''ramdisk'',
''/boot/initrd-2.6.12.6-xen.img''], [''ip'',
''10.74.64.112:1.2.3.4:10.74.64.1:255.255.255.0:sheet-vm01:eth0:off''],
[''root'', ''/dev/hda12 ro''],
[''args'', ''3''], [''vcpus'',
''1''], [''vcpus'',
''1''], [''boot'', ''c''],
[''display'', '':0.0''],
[''nics'', ''1'']],
''on_poweroff'': None, ''cpus'': None,
''name'': ''sheet-vm01'',
''backend'':
[], ''vcpus'': 1, ''cpu_weight'': None,
''vcpu_avail'': None, ''memory'': 32,
''device'': [(''vbd'', [''vbd'',
[''uname'', ''phy:hda12''],
[''dev'', ''hda12''],
[''mode'', ''w'']]), (''vif'',
[''vif''])], ''bootloader'': None,
''cpu'': None,
''maxmem'': None}
[2006-03-17 09:49:12 xend.XendDomainInfo] DEBUG (XendDomainInfo:1123)
XendDomainInfo.construct: None 0
[2006-03-17 09:49:12 xend.XendDomainInfo] DEBUG (XendDomainInfo:1155)
XendDomainInfo.initDomain: 6 1.0
[2006-03-17 09:49:12 xend] DEBUG (balloon:47) Balloon: free 71; need 33.
[2006-03-17 09:49:12 xend] INFO (image:132) buildDomain os=linux dom=6 vcpus=1
[2006-03-17 09:49:12 xend] DEBUG (image:170) dom = 6
[2006-03-17 09:49:12 xend] DEBUG (image:171) image
/boot/vmlinuz-2.6.12.6-xenU
[2006-03-17 09:49:12 xend] DEBUG (image:172) store_evtchn = 1
[2006-03-17 09:49:12 xend] DEBUG (image:173) console_evtchn = 2
[2006-03-17 09:49:12 xend] DEBUG (image:174) cmdline =
ip=10.74.64.112:1.2.3.4:10.74.64.1:255.255.255.0:sheet-vm01:eth0:off
root=/dev/hda12 ro 3
[2006-03-17 09:49:12 xend] DEBUG (image:175) ramdisk
/boot/initrd-2.6.12.6-xen.img
[2006-03-17 09:49:12 xend] DEBUG (image:176) vcpus = 1
[2006-03-17 09:49:13 xend] DEBUG (DevController:104) DevController:
writing {''virtual-device'': ''780'',
''backend-id'': ''0'',
''state'': ''1'',
''backend'':
''/local/domain/0/backend/vbd/6/780''} to
/local/domain/6/device/vbd/780.
[2006-03-17 09:49:13 xend] DEBUG (DevController:106) DevController:
writing {''domain'': ''sheet-vm01'',
''frontend'':
''/local/domain/6/device/vbd/780'', ''dev'':
''hda12'', ''state'': ''1'',
''params'': ''hda12'', ''mode'':
''w'', ''frontend-id'': ''6'',
''type'': ''phy''} to
/local/domain/0/backend/vbd/6/780.
[2006-03-17 09:49:13 xend] DEBUG (DevController:104) DevController:
writing {''backend-id'': ''0'',
''mac'': ''00:16:3e:07:95:bc'',
''handle'': ''0'',
''state'': ''1'', ''backend'':
''/local/domain/0/backend/vif/6/0''} to
/local/domain/6/device/vif/0.
[2006-03-17 09:49:13 xend] DEBUG (DevController:106) DevController:
writing {''mac'': ''00:16:3e:07:95:bc'',
''state'': ''1'', ''handle'':
''0'',
''script'': ''/etc/xen/scripts/vif-bridge'',
''frontend-id'': ''6'',
''domain'':
''sheet-vm01'', ''frontend'':
''/local/domain/6/device/vif/0''} to
/local/domain/0/backend/vif/6/0.
[2006-03-17 09:49:13 xend.XendDomainInfo] DEBUG (XendDomainInfo:655)
Storing VM details: {''ssidref'': ''0'',
''uuid'':
''5c7dbb5c-59020e16-0f401176-8c72f2b2'',
''on_reboot'': ''restart'',
''image'': "(linux (kernel /boot/vmlinuz-2.6.12.6-xenU)
(ramdisk
/boot/initrd-2.6.12.6-xen.img) (ip
10.74.64.112:1.2.3.4:10.74.64.1:255.255.255.0:sheet-vm01:eth0:off)
(root ''/dev/hda12 ro'') (args 3) (vcpus 1) (vcpus 1) (boot c)
(display
:0.0) (nics 1))", ''on_poweroff'':
''destroy'', ''name'':
''sheet-vm01'',
''vcpus'': ''1'',
''vcpu_avail'': ''1'',
''memory'': ''32'',
''on_crash'':
''restart'', ''start_time'':
''1142569153.04'', ''maxmem'':
''32''}
[2006-03-17 09:49:13 xend.XendDomainInfo] DEBUG (XendDomainInfo:680)
Storing domain details: {''console/ring-ref'':
''80779'', ''console/port'':
''2'', ''name'': ''sheet-vm01'',
''console/limit'': ''1048576'',
''vm'':
''/vm/5c7dbb5c-59020e16-0f401176-8c72f2b2'',
''domid'': ''6'',
''cpu/0/availability'': ''online'',
''memory/target'': ''32768'',
''store/ring-ref'': ''80780'',
''store/port'': ''1''}
[2006-03-17 09:49:13 xend] DEBUG (DevController:133) Waiting for devices vif.
[2006-03-17 09:49:13 xend] DEBUG (DevController:139) Waiting for 0.
[2006-03-17 09:49:13 xend] DEBUG (DevController:409)
hotplugStatusCallback /local/domain/0/backend/vif/6/0/hotplug-status.
[2006-03-17 09:49:13 xend] DEBUG (DevController:409)
hotplugStatusCallback /local/domain/0/backend/vif/6/0/hotplug-status.
[2006-03-17 09:49:13 xend] DEBUG (DevController:426) hotplugStatusCallback 3.
[2006-03-17 09:49:13 xend] ERROR (SrvBase:87) Request wait_for_devices failed.
Traceback (most recent call last):
File "/usr/lib/python/xen/web/SrvBase.py", line 85, in perform
return op_method(op, req)
File "/usr/lib/python/xen/xend/server/SrvDomain.py", line 72, in
op_wait_for_devices
return self.dom.waitForDevices()
File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 1343, in
waitForDevices
self.waitForDevices_(c)
File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 971, in
waitForDevices_
return self.getDeviceController(deviceClass).waitForDevices()
File "/usr/lib/python/xen/xend/server/DevController.py", line 135,
in waitForDevices
return map(self.waitForDevice, self.deviceIDs())
File "/usr/lib/python/xen/xend/server/DevController.py", line 151,
in waitForDevice
raise VmError("Device %s (%s) could not be connected. "
VmError: Device 0 (vif) could not be connected. Backend device not found.
Please suggest.
~$ubh
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