Task blocked for more than 120 seconds.

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Task blocked for more than 120 seconds.

agya naila
Hi all,

Today I got problem below and my domU become unresponsive and I should restart the pc to make it running properly again. 

[  240.172092] INFO: task kworker/u:0:5 blocked for more than 120 seconds.
[  240.172110] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172376] INFO: task jbd2/xvda1-8:153 blocked for more than 120 seconds.
[  240.172388] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172610] INFO: task flush-202:0:421 blocked for more than 120 seconds.
[  240.172619] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172946] INFO: task freeswitch:1030 blocked for more than 120 seconds.
[  240.172957] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173215] INFO: task freeswitch:1033 blocked for more than 120 seconds.
[  240.173225] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173454] INFO: task freeswitch:1036 blocked for more than 120 seconds.
[  240.173464] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173670] INFO: task freeswitch:1044 blocked for more than 120 seconds.
[  240.173680] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173828] INFO: task freeswitch:1046 blocked for more than 120 seconds.
[  240.173839] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173986] INFO: task freeswitch:1047 blocked for more than 120 seconds.
[  240.173996] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

Does any body have clue regarding this problem?

Regards,

Agya

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Re: Task blocked for more than 120 seconds.

Aaron Cossey
I've encountered this frequently due to high io load. If you have monitoring of load and io, did you see anything happen just before these errors started in the logs?

Aaron Cossey
[hidden email]


On Wed, Mar 6, 2013 at 1:35 PM, agya naila <[hidden email]> wrote:
Hi all,

Today I got problem below and my domU become unresponsive and I should restart the pc to make it running properly again. 

[  240.172092] INFO: task kworker/u:0:5 blocked for more than 120 seconds.
[  240.172110] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172376] INFO: task jbd2/xvda1-8:153 blocked for more than 120 seconds.
[  240.172388] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172610] INFO: task flush-202:0:421 blocked for more than 120 seconds.
[  240.172619] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172946] INFO: task freeswitch:1030 blocked for more than 120 seconds.
[  240.172957] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173215] INFO: task freeswitch:1033 blocked for more than 120 seconds.
[  240.173225] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173454] INFO: task freeswitch:1036 blocked for more than 120 seconds.
[  240.173464] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173670] INFO: task freeswitch:1044 blocked for more than 120 seconds.
[  240.173680] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173828] INFO: task freeswitch:1046 blocked for more than 120 seconds.
[  240.173839] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173986] INFO: task freeswitch:1047 blocked for more than 120 seconds.
[  240.173996] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

Does any body have clue regarding this problem?

Regards,

Agya

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Re: Task blocked for more than 120 seconds.

agya naila
I am not sure its due to high load in my case since there is still no high load in server. I didn't run any program that have high load and no client that accessing this server. I am suspecting the hotplug script. In my xend.log here is the logs :

server1@server1:~$ sudo tail /var/log/xen/xend.log
[2013-03-13 13:04:51 1983] DEBUG (DevController:144) Waiting for 51712.
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/4/51712/hotplug-status.
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/4/51712/hotplug-status.
[2013-03-13 13:04:51 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices irq.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vfb.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices pci.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vusb.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vtpm.
[2013-03-13 13:04:51 1983] INFO (XendDomain:1225) Domain DomU (4) unpaused.

any hints ?

regards,

Agya


On Wed, Mar 6, 2013 at 4:12 PM, Aaron Cossey <[hidden email]> wrote:
I've encountered this frequently due to high io load. If you have monitoring of load and io, did you see anything happen just before these errors started in the logs?

Aaron Cossey
[hidden email]


On Wed, Mar 6, 2013 at 1:35 PM, agya naila <[hidden email]> wrote:
Hi all,

Today I got problem below and my domU become unresponsive and I should restart the pc to make it running properly again. 

[  240.172092] INFO: task kworker/u:0:5 blocked for more than 120 seconds.
[  240.172110] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172376] INFO: task jbd2/xvda1-8:153 blocked for more than 120 seconds.
[  240.172388] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172610] INFO: task flush-202:0:421 blocked for more than 120 seconds.
[  240.172619] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172946] INFO: task freeswitch:1030 blocked for more than 120 seconds.
[  240.172957] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173215] INFO: task freeswitch:1033 blocked for more than 120 seconds.
[  240.173225] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173454] INFO: task freeswitch:1036 blocked for more than 120 seconds.
[  240.173464] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173670] INFO: task freeswitch:1044 blocked for more than 120 seconds.
[  240.173680] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173828] INFO: task freeswitch:1046 blocked for more than 120 seconds.
[  240.173839] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173986] INFO: task freeswitch:1047 blocked for more than 120 seconds.
[  240.173996] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

Does any body have clue regarding this problem?

Regards,

Agya

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[hidden email]
http://lists.xen.org/xen-users


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[hidden email]
http://lists.xen.org/xen-users


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Re: Task blocked for more than 120 seconds.

agya naila
Here more details of my machine log :

[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:3077) XendDomainInfo.destroy: domid=3
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1882) XendDomainInfo.handleShutdownWatch
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1882) XendDomainInfo.handleShutdownWatch
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1882) XendDomainInfo.handleShutdownWatch
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:2402) Destroying device model
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:2415) Removing vif/0
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:2415) Removing console/0
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = console, device = c$
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:2415) Removing vbd/51712
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/5$
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:2407) No device model
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:2415) Removing vif/0
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:2415) Removing vbd/51712
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/5$
[2013-03-13 13:04:46 1983] DEBUG (XendDomainInfo:103) XendDomainInfo.create(['vm', ['name', 'Sb-Voip1-DomU'], ['memory$
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/5$
[2013-03-13 13:04:46 1983] DEBUG (XendDomainInfo:103) XendDomainInfo.create(['vm', ['name', 'Sb-Voip1-DomU'], ['memory$
[2013-03-13 13:04:46 1983] DEBUG (XendDomainInfo:2499) XendDomainInfo.constructDomain
[2013-03-13 13:04:46 1983] DEBUG (balloon:187) Balloon: 2058876 KiB free; need 16384; done.
[2013-03-13 13:04:47 1983] DEBUG (XendDomain:476) Adding Domain: 4
[2013-03-13 13:04:47 1983] DEBUG (XendDomainInfo:2842) XendDomainInfo.initDomain: 4 256
[2013-03-13 13:04:47 1983] INFO (XendDomainInfo:3276) Mounting drbd-vm on /dev/xvdp.
[2013-03-13 13:04:47 1983] DEBUG (DevController:95) DevController: writing {'backend-id': '0', 'virtual-device': '5195$
[2013-03-13 13:04:47 1983] DEBUG (DevController:97) DevController: writing {'domain': 'Domain-0', 'frontend': '/local/$
[2013-03-13 13:04:47 1983] DEBUG (DevController:144) Waiting for 51952.
[2013-03-13 13:04:47 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/0/51952/hotplug$
[2013-03-13 13:04:47 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/0/51952/hotplug$
[2013-03-13 13:04:47 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:47 1983] DEBUG (DevController:144) Waiting for 51952.
[2013-03-13 13:04:47 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/0/51952/hotplug$
[2013-03-13 13:04:47 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:47 4725] DEBUG (XendBootloader:113) Launching bootloader as ['/usr/bin/pygrub', '--output=/var/run/x$
[2013-03-13 13:04:49 1983] INFO (XendDomainInfo:3295) Unmounting /dev/xvdp from /dev/xvdp.
[2013-03-13 13:04:49 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = /dev/$
[2013-03-13 13:04:49 1983] DEBUG (XendDomainInfo:2869) _initDomain:shadow_memory=0x0, memory_static_max=0x40000000, me$
[2013-03-13 13:04:49 1983] INFO (image:182) buildDomain os=linux dom=4 vcpus=1
[2013-03-13 13:04:49 1983] DEBUG (image:721) domid          = 4
[2013-03-13 13:04:49 1983] DEBUG (image:722) memsize        = 1024
[2013-03-13 13:04:49 1983] DEBUG (image:723) image          = /var/run/xend/boot/boot_kernel.bWctVs
[2013-03-13 13:04:49 1983] DEBUG (image:724) store_evtchn   = 1
[2013-03-13 13:04:49 1983] DEBUG (image:723) image          = /var/run/xend/boot/boot_kernel.bWctVs
[2013-03-13 13:04:49 1983] DEBUG (image:724) store_evtchn   = 1
[2013-03-13 13:04:49 1983] DEBUG (image:725) console_evtchn = 2
[2013-03-13 13:04:49 1983] DEBUG (image:726) cmdline        = root=UUID=f76e1730-ef98-43f3-ae37-caaff1dbe5c1 ro consol$
[2013-03-13 13:04:49 1983] DEBUG (image:727) ramdisk        = /var/run/xend/boot/boot_ramdisk.GF_u4x
[2013-03-13 13:04:49 1983] DEBUG (image:728) vcpus          = 1
[2013-03-13 13:04:49 1983] DEBUG (image:729) features       =
[2013-03-13 13:04:49 1983] DEBUG (image:730) flags          = 0
[2013-03-13 13:04:49 1983] DEBUG (image:731) superpages     = 0
[2013-03-13 13:04:50 1983] INFO (XendDomainInfo:2358) createDevice: vbd : {'uuid': '2601a8a4-f53c-e392-44b7-4d79ecb6bf$
[2013-03-13 13:04:50 1983] DEBUG (DevController:95) DevController: writing {'virtual-device': '51712', 'device-type': $
[2013-03-13 13:04:50 1983] DEBUG (DevController:97) DevController: writing {'domain': 'Sb-Voip1-DomU', 'frontend': '/l$
[2013-03-13 13:04:50 1983] INFO (XendDomainInfo:2358) createDevice: vif : {'ip': '192.168.129.55', 'mac': '00:16:3e:35$
[2013-03-13 13:04:50 1983] DEBUG (DevController:95) DevController: writing {'mac': '00:16:3e:35:82:be', 'handle': '0',$
[2013-03-13 13:04:50 1983] DEBUG (DevController:97) DevController: writing {'bridge': 'xenbr0', 'domain': 'Sb-Voip1-Do$
[2013-03-13 13:04:50 1983] DEBUG (XendDomainInfo:3426) Storing VM details: {'on_xend_stop': 'ignore', 'pool_name': 'Po$
[2013-03-13 13:04:50 1983] DEBUG (XendDomainInfo:1795) Storing domain details: {'console/ring-ref': '270105', 'image/e$
[2013-03-13 13:04:50 1983] DEBUG (DevController:95) DevController: writing {'protocol': 'x86_64-abi', 'state': '1', 'b$
[2013-03-13 13:04:50 1983] DEBUG (DevController:97) DevController: writing {'domain': 'Sb-Voip1-DomU', 'frontend': '/l$
[2013-03-13 13:04:51 1983] DEBUG (XendDomainInfo:1882) XendDomainInfo.handleShutdownWatch
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices tap2.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vif.
[2013-03-13 13:04:51 1983] DEBUG (DevController:144) Waiting for 0.
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vif/4/0/hotplug-sta$
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vif/4/0/hotplug-sta$
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vif/4/0/hotplug-sta$
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vif/4/0/hotplug-sta$
[2013-03-13 13:04:51 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vkbd.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices ioports.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices tap.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vif2.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices console.
[2013-03-13 13:04:51 1983] DEBUG (DevController:144) Waiting for 0.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vscsi.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vbd.
[2013-03-13 13:04:51 1983] DEBUG (DevController:144) Waiting for 51712.
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/4/51712/hotplug$
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/4/51712/hotplug$
[2013-03-13 13:04:51 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices irq.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vfb.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices pci.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vusb.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vtpm.
[2013-03-13 13:04:51 1983] INFO (XendDomain:1225) Domain Sb-Voip1-DomU (4) unpaused.
[2013-03-13 13:20:31 1983] DEBUG (XendDomainInfo:3077) XendDomainInfo.destroy: domid=4
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2402) Destroying device model
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing vif/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing vif/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing console/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = console, device = c$
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing vbd/51712
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/5$
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2407) No device model
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing vif/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing vbd/51712
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/5$
[2013-03-13 13:23:03 1983] DEBUG (XendDomainInfo:103) XendDomainInfo.create(['vm', ['name', 'Sb-Voip1-DomU'], ['memory$
[2013-03-13 13:23:03 1983] DEBUG (XendDomainInfo:2499) XendDomainInfo.constructDomain
[2013-03-13 13:23:03 1983] DEBUG (balloon:187) Balloon: 2058700 KiB free; need 16384; done.

[2013-03-13 13:23:03 1983] DEBUG (XendDomain:476) Adding Domain: 5
[2013-03-13 13:23:03 1983] DEBUG (XendDomainInfo:2842) XendDomainInfo.initDomain: 5 256
[2013-03-13 13:23:03 1983] INFO (XendDomainInfo:3276) Mounting drbd-vm on /dev/xvdp.
[2013-03-13 13:23:03 1983] DEBUG (DevController:95) DevController: writing {'backend-id': '0', 'virtual-device': '5195$
[2013-03-13 13:23:03 1983] DEBUG (DevController:97) DevController: writing {'domain': 'Domain-0', 'frontend': '/local/$
[2013-03-13 13:23:03 1983] DEBUG (DevController:144) Waiting for 51952.
[2013-03-13 13:23:03 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/0/51952/hotplug$
[2013-03-13 13:24:43 1983] ERROR (XendDomainInfo:3993) Device 51952 (vbd) could not be connected. Hotplug scripts not $
Traceback (most recent call last):
[2013-03-13 13:24:43 1983] ERROR (XendDomainInfo:3993) Device 51952 (vbd) could not be connected. Hotplug scripts not $
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 3989, in create_vbd
    self._waitForDevice(dev_type, devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 2330, in _waitForDevice
    return self.getDeviceController(deviceClass).waitForDevice(devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/server/DevController.py", line 155, in waitForDevice
    (devid, self.deviceClass))
VmError: Device 51952 (vbd) could not be connected. Hotplug scripts not working.
[2013-03-13 13:24:43 1983] ERROR (XendDomainInfo:488) VM start failed
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 2844, in _initDomain
    self._configureBootloader()
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 3285, in _configureBootloader
    mounted_vbd_uuid = dom0.create_vbd(vbd, disk);
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 3989, in create_vbd
    self._waitForDevice(dev_type, devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 2330, in _waitForDevice
    return self.getDeviceController(deviceClass).waitForDevice(devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/server/DevController.py", line 155, in waitForDevice
    (devid, self.deviceClass))
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/server/DevController.py", line 155, in waitForDevice
    (devid, self.deviceClass))
VmError: Device 51952 (vbd) could not be connected. Hotplug scripts not working.
[2013-03-13 13:24:43 1983] DEBUG (XendDomainInfo:3077) XendDomainInfo.destroy: domid=5
[2013-03-13 13:24:43 1983] DEBUG (XendDomainInfo:2407) No device model
[2013-03-13 13:24:43 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:24:43 1983] ERROR (XendDomainInfo:108) Domain construction failed
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 106, in create
    vm.start()
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 2844, in _initDomain
    self._configureBootloader()
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 3285, in _configureBootloader
    mounted_vbd_uuid = dom0.create_vbd(vbd, disk);
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 3989, in create_vbd
    self._waitForDevice(dev_type, devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 2330, in _waitForDevice
    return self.getDeviceController(deviceClass).waitForDevice(devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/server/DevController.py", line 155, in waitForDevice
    (devid, self.deviceClass))
VmError: Device 51952 (vbd) could not be connected. Hotplug scripts not working.
 (devid, self.deviceClass))
VmError: Device 51952 (vbd) could not be connected. Hotplug scripts not working.


Regards,

Agya

On Wed, Mar 13, 2013 at 1:14 PM, agya naila <[hidden email]> wrote:
I am not sure its due to high load in my case since there is still no high load in server. I didn't run any program that have high load and no client that accessing this server. I am suspecting the hotplug script. In my xend.log here is the logs :

server1@server1:~$ sudo tail /var/log/xen/xend.log
[2013-03-13 13:04:51 1983] DEBUG (DevController:144) Waiting for 51712.
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/4/51712/hotplug-status.
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/4/51712/hotplug-status.
[2013-03-13 13:04:51 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices irq.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vfb.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices pci.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vusb.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vtpm.
[2013-03-13 13:04:51 1983] INFO (XendDomain:1225) Domain DomU (4) unpaused.

any hints ?

regards,

Agya


On Wed, Mar 6, 2013 at 4:12 PM, Aaron Cossey <[hidden email]> wrote:
I've encountered this frequently due to high io load. If you have monitoring of load and io, did you see anything happen just before these errors started in the logs?

Aaron Cossey
[hidden email]


On Wed, Mar 6, 2013 at 1:35 PM, agya naila <[hidden email]> wrote:
Hi all,

Today I got problem below and my domU become unresponsive and I should restart the pc to make it running properly again. 

[  240.172092] INFO: task kworker/u:0:5 blocked for more than 120 seconds.
[  240.172110] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172376] INFO: task jbd2/xvda1-8:153 blocked for more than 120 seconds.
[  240.172388] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172610] INFO: task flush-202:0:421 blocked for more than 120 seconds.
[  240.172619] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172946] INFO: task freeswitch:1030 blocked for more than 120 seconds.
[  240.172957] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173215] INFO: task freeswitch:1033 blocked for more than 120 seconds.
[  240.173225] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173454] INFO: task freeswitch:1036 blocked for more than 120 seconds.
[  240.173464] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173670] INFO: task freeswitch:1044 blocked for more than 120 seconds.
[  240.173680] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173828] INFO: task freeswitch:1046 blocked for more than 120 seconds.
[  240.173839] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173986] INFO: task freeswitch:1047 blocked for more than 120 seconds.
[  240.173996] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

Does any body have clue regarding this problem?

Regards,

Agya

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Re: Task blocked for more than 120 seconds.

agya naila
I am also got this message when reboot the machine :

udevd[243]: inotify_add_watch(6, /dev/dm-3, 10) failed : Invalid argument
udevd[244]: inotify_add_watch(6, /dev/dm-1, 10) failed : Invalid argument

Regards,

Agya

On Wed, Mar 13, 2013 at 1:34 PM, agya naila <[hidden email]> wrote:
Here more details of my machine log :

[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:3077) XendDomainInfo.destroy: domid=3
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1882) XendDomainInfo.handleShutdownWatch
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1882) XendDomainInfo.handleShutdownWatch
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1882) XendDomainInfo.handleShutdownWatch
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:2402) Destroying device model
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:2415) Removing vif/0
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:2415) Removing console/0
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = console, device = c$
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:2415) Removing vbd/51712
[2013-03-13 13:03:05 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/5$
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:2407) No device model
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:2415) Removing vif/0
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:2415) Removing vbd/51712
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/5$
[2013-03-13 13:04:46 1983] DEBUG (XendDomainInfo:103) XendDomainInfo.create(['vm', ['name', 'Sb-Voip1-DomU'], ['memory$
[2013-03-13 13:03:06 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/5$
[2013-03-13 13:04:46 1983] DEBUG (XendDomainInfo:103) XendDomainInfo.create(['vm', ['name', 'Sb-Voip1-DomU'], ['memory$
[2013-03-13 13:04:46 1983] DEBUG (XendDomainInfo:2499) XendDomainInfo.constructDomain
[2013-03-13 13:04:46 1983] DEBUG (balloon:187) Balloon: 2058876 KiB free; need 16384; done.
[2013-03-13 13:04:47 1983] DEBUG (XendDomain:476) Adding Domain: 4
[2013-03-13 13:04:47 1983] DEBUG (XendDomainInfo:2842) XendDomainInfo.initDomain: 4 256
[2013-03-13 13:04:47 1983] INFO (XendDomainInfo:3276) Mounting drbd-vm on /dev/xvdp.
[2013-03-13 13:04:47 1983] DEBUG (DevController:95) DevController: writing {'backend-id': '0', 'virtual-device': '5195$
[2013-03-13 13:04:47 1983] DEBUG (DevController:97) DevController: writing {'domain': 'Domain-0', 'frontend': '/local/$
[2013-03-13 13:04:47 1983] DEBUG (DevController:144) Waiting for 51952.
[2013-03-13 13:04:47 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/0/51952/hotplug$
[2013-03-13 13:04:47 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/0/51952/hotplug$
[2013-03-13 13:04:47 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:47 1983] DEBUG (DevController:144) Waiting for 51952.
[2013-03-13 13:04:47 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/0/51952/hotplug$
[2013-03-13 13:04:47 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:47 4725] DEBUG (XendBootloader:113) Launching bootloader as ['/usr/bin/pygrub', '--output=/var/run/x$
[2013-03-13 13:04:49 1983] INFO (XendDomainInfo:3295) Unmounting /dev/xvdp from /dev/xvdp.
[2013-03-13 13:04:49 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = /dev/$
[2013-03-13 13:04:49 1983] DEBUG (XendDomainInfo:2869) _initDomain:shadow_memory=0x0, memory_static_max=0x40000000, me$
[2013-03-13 13:04:49 1983] INFO (image:182) buildDomain os=linux dom=4 vcpus=1
[2013-03-13 13:04:49 1983] DEBUG (image:721) domid          = 4
[2013-03-13 13:04:49 1983] DEBUG (image:722) memsize        = 1024
[2013-03-13 13:04:49 1983] DEBUG (image:723) image          = /var/run/xend/boot/boot_kernel.bWctVs
[2013-03-13 13:04:49 1983] DEBUG (image:724) store_evtchn   = 1
[2013-03-13 13:04:49 1983] DEBUG (image:723) image          = /var/run/xend/boot/boot_kernel.bWctVs
[2013-03-13 13:04:49 1983] DEBUG (image:724) store_evtchn   = 1
[2013-03-13 13:04:49 1983] DEBUG (image:725) console_evtchn = 2
[2013-03-13 13:04:49 1983] DEBUG (image:726) cmdline        = root=UUID=f76e1730-ef98-43f3-ae37-caaff1dbe5c1 ro consol$
[2013-03-13 13:04:49 1983] DEBUG (image:727) ramdisk        = /var/run/xend/boot/boot_ramdisk.GF_u4x
[2013-03-13 13:04:49 1983] DEBUG (image:728) vcpus          = 1
[2013-03-13 13:04:49 1983] DEBUG (image:729) features       =
[2013-03-13 13:04:49 1983] DEBUG (image:730) flags          = 0
[2013-03-13 13:04:49 1983] DEBUG (image:731) superpages     = 0
[2013-03-13 13:04:50 1983] INFO (XendDomainInfo:2358) createDevice: vbd : {'uuid': '2601a8a4-f53c-e392-44b7-4d79ecb6bf$
[2013-03-13 13:04:50 1983] DEBUG (DevController:95) DevController: writing {'virtual-device': '51712', 'device-type': $
[2013-03-13 13:04:50 1983] DEBUG (DevController:97) DevController: writing {'domain': 'Sb-Voip1-DomU', 'frontend': '/l$
[2013-03-13 13:04:50 1983] INFO (XendDomainInfo:2358) createDevice: vif : {'ip': '192.168.129.55', 'mac': '00:16:3e:35$
[2013-03-13 13:04:50 1983] DEBUG (DevController:95) DevController: writing {'mac': '00:16:3e:35:82:be', 'handle': '0',$
[2013-03-13 13:04:50 1983] DEBUG (DevController:97) DevController: writing {'bridge': 'xenbr0', 'domain': 'Sb-Voip1-Do$
[2013-03-13 13:04:50 1983] DEBUG (XendDomainInfo:3426) Storing VM details: {'on_xend_stop': 'ignore', 'pool_name': 'Po$
[2013-03-13 13:04:50 1983] DEBUG (XendDomainInfo:1795) Storing domain details: {'console/ring-ref': '270105', 'image/e$
[2013-03-13 13:04:50 1983] DEBUG (DevController:95) DevController: writing {'protocol': 'x86_64-abi', 'state': '1', 'b$
[2013-03-13 13:04:50 1983] DEBUG (DevController:97) DevController: writing {'domain': 'Sb-Voip1-DomU', 'frontend': '/l$
[2013-03-13 13:04:51 1983] DEBUG (XendDomainInfo:1882) XendDomainInfo.handleShutdownWatch
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices tap2.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vif.
[2013-03-13 13:04:51 1983] DEBUG (DevController:144) Waiting for 0.
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vif/4/0/hotplug-sta$
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vif/4/0/hotplug-sta$
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vif/4/0/hotplug-sta$
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vif/4/0/hotplug-sta$
[2013-03-13 13:04:51 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vkbd.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices ioports.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices tap.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vif2.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices console.
[2013-03-13 13:04:51 1983] DEBUG (DevController:144) Waiting for 0.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vscsi.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vbd.
[2013-03-13 13:04:51 1983] DEBUG (DevController:144) Waiting for 51712.
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/4/51712/hotplug$
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/4/51712/hotplug$
[2013-03-13 13:04:51 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices irq.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vfb.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices pci.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vusb.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vtpm.
[2013-03-13 13:04:51 1983] INFO (XendDomain:1225) Domain Sb-Voip1-DomU (4) unpaused.
[2013-03-13 13:20:31 1983] DEBUG (XendDomainInfo:3077) XendDomainInfo.destroy: domid=4
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2402) Destroying device model
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing vif/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing vif/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing console/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = console, device = c$
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing vbd/51712
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/5$
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2407) No device model
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing vif/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:2415) Removing vbd/51712
[2013-03-13 13:20:32 1983] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/5$
[2013-03-13 13:23:03 1983] DEBUG (XendDomainInfo:103) XendDomainInfo.create(['vm', ['name', 'Sb-Voip1-DomU'], ['memory$
[2013-03-13 13:23:03 1983] DEBUG (XendDomainInfo:2499) XendDomainInfo.constructDomain
[2013-03-13 13:23:03 1983] DEBUG (balloon:187) Balloon: 2058700 KiB free; need 16384; done.

[2013-03-13 13:23:03 1983] DEBUG (XendDomain:476) Adding Domain: 5
[2013-03-13 13:23:03 1983] DEBUG (XendDomainInfo:2842) XendDomainInfo.initDomain: 5 256
[2013-03-13 13:23:03 1983] INFO (XendDomainInfo:3276) Mounting drbd-vm on /dev/xvdp.
[2013-03-13 13:23:03 1983] DEBUG (DevController:95) DevController: writing {'backend-id': '0', 'virtual-device': '5195$
[2013-03-13 13:23:03 1983] DEBUG (DevController:97) DevController: writing {'domain': 'Domain-0', 'frontend': '/local/$
[2013-03-13 13:23:03 1983] DEBUG (DevController:144) Waiting for 51952.
[2013-03-13 13:23:03 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/0/51952/hotplug$
[2013-03-13 13:24:43 1983] ERROR (XendDomainInfo:3993) Device 51952 (vbd) could not be connected. Hotplug scripts not $
Traceback (most recent call last):
[2013-03-13 13:24:43 1983] ERROR (XendDomainInfo:3993) Device 51952 (vbd) could not be connected. Hotplug scripts not $
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 3989, in create_vbd
    self._waitForDevice(dev_type, devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 2330, in _waitForDevice
    return self.getDeviceController(deviceClass).waitForDevice(devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/server/DevController.py", line 155, in waitForDevice
    (devid, self.deviceClass))
VmError: Device 51952 (vbd) could not be connected. Hotplug scripts not working.
[2013-03-13 13:24:43 1983] ERROR (XendDomainInfo:488) VM start failed
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 2844, in _initDomain
    self._configureBootloader()
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 3285, in _configureBootloader
    mounted_vbd_uuid = dom0.create_vbd(vbd, disk);
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 3989, in create_vbd
    self._waitForDevice(dev_type, devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 2330, in _waitForDevice
    return self.getDeviceController(deviceClass).waitForDevice(devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/server/DevController.py", line 155, in waitForDevice
    (devid, self.deviceClass))
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/server/DevController.py", line 155, in waitForDevice
    (devid, self.deviceClass))
VmError: Device 51952 (vbd) could not be connected. Hotplug scripts not working.
[2013-03-13 13:24:43 1983] DEBUG (XendDomainInfo:3077) XendDomainInfo.destroy: domid=5
[2013-03-13 13:24:43 1983] DEBUG (XendDomainInfo:2407) No device model
[2013-03-13 13:24:43 1983] DEBUG (XendDomainInfo:2409) Releasing devices
[2013-03-13 13:24:43 1983] ERROR (XendDomainInfo:108) Domain construction failed
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 106, in create
    vm.start()
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 2844, in _initDomain
    self._configureBootloader()
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 3285, in _configureBootloader
    mounted_vbd_uuid = dom0.create_vbd(vbd, disk);
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 3989, in create_vbd
    self._waitForDevice(dev_type, devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/XendDomainInfo.py", line 2330, in _waitForDevice
    return self.getDeviceController(deviceClass).waitForDevice(devid)
  File "/usr/local/lib/python2.7/dist-packages/xen/xend/server/DevController.py", line 155, in waitForDevice
    (devid, self.deviceClass))
VmError: Device 51952 (vbd) could not be connected. Hotplug scripts not working.
 (devid, self.deviceClass))
VmError: Device 51952 (vbd) could not be connected. Hotplug scripts not working.


Regards,

Agya

On Wed, Mar 13, 2013 at 1:14 PM, agya naila <[hidden email]> wrote:
I am not sure its due to high load in my case since there is still no high load in server. I didn't run any program that have high load and no client that accessing this server. I am suspecting the hotplug script. In my xend.log here is the logs :

server1@server1:~$ sudo tail /var/log/xen/xend.log
[2013-03-13 13:04:51 1983] DEBUG (DevController:144) Waiting for 51712.
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/4/51712/hotplug-status.
[2013-03-13 13:04:51 1983] DEBUG (DevController:628) hotplugStatusCallback /local/domain/0/backend/vbd/4/51712/hotplug-status.
[2013-03-13 13:04:51 1983] DEBUG (DevController:642) hotplugStatusCallback 1.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices irq.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vfb.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices pci.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vusb.
[2013-03-13 13:04:51 1983] DEBUG (DevController:139) Waiting for devices vtpm.
[2013-03-13 13:04:51 1983] INFO (XendDomain:1225) Domain DomU (4) unpaused.

any hints ?

regards,

Agya


On Wed, Mar 6, 2013 at 4:12 PM, Aaron Cossey <[hidden email]> wrote:
I've encountered this frequently due to high io load. If you have monitoring of load and io, did you see anything happen just before these errors started in the logs?

Aaron Cossey
[hidden email]


On Wed, Mar 6, 2013 at 1:35 PM, agya naila <[hidden email]> wrote:
Hi all,

Today I got problem below and my domU become unresponsive and I should restart the pc to make it running properly again. 

[  240.172092] INFO: task kworker/u:0:5 blocked for more than 120 seconds.
[  240.172110] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172376] INFO: task jbd2/xvda1-8:153 blocked for more than 120 seconds.
[  240.172388] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172610] INFO: task flush-202:0:421 blocked for more than 120 seconds.
[  240.172619] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.172946] INFO: task freeswitch:1030 blocked for more than 120 seconds.
[  240.172957] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173215] INFO: task freeswitch:1033 blocked for more than 120 seconds.
[  240.173225] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173454] INFO: task freeswitch:1036 blocked for more than 120 seconds.
[  240.173464] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173670] INFO: task freeswitch:1044 blocked for more than 120 seconds.
[  240.173680] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173828] INFO: task freeswitch:1046 blocked for more than 120 seconds.
[  240.173839] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.173986] INFO: task freeswitch:1047 blocked for more than 120 seconds.
[  240.173996] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

Does any body have clue regarding this problem?

Regards,

Agya

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