Debian

Bug #1180777
Comment #8

Comment 8 for bug 1180777

Revision history for this message

f3a97 (f3a97) wrote on 2013-06-05: Re: [Bug 1180777] Re: Windows 7 VM freeze on Ubuntu 12.04 KVM

It just happened again.

This time I have recorded some new information.

netstat shows a costant, non zero Send-Q:

@ubuntu:~/WORKS/Programs/apache-jmeter-2.9/bin$ date ; netstat -atn | grep
3389
Wed Jun 5 15:23:24 CEST 2013
tcp 0 7301 192.168.122.1:59458 192.168.122.116:3389
ESTABLISHED
@ubuntu:~/WORKS/Programs/apache-jmeter-2.9/bin$ date ; netstat -atn | grep
3389
Wed Jun 5 15:23:27 CEST 2013
tcp 0 7301 192.168.122.1:59458 192.168.122.116:3389
ESTABLISHED
@ubuntu:~/WORKS/Programs/apache-jmeter-2.9/bin$ date ; netstat -atn | grep
3389
Wed Jun 5 15:23:47 CEST 2013
tcp 0 7301 192.168.122.1:59458 192.168.122.116:3389
ESTABLISHED
@ubuntu:~/WORKS/Programs/apache-jmeter-2.9/bin$ date ; netstat -atn | grep
3389
Wed Jun 5 15:24:34 CEST 2013
tcp 0 7301 192.168.122.1:59458 192.168.122.116:3389
ESTABLISHED

Sniffing that connection with tcpdump, I can see that no packets flows back
from the VM (port 3389) back to the client:

15:22:03.402659 IP 192.168.122.1.59458 > 192.168.122.116.3389: Flags [P.],
seq 2389102186:2389102247, ack 1393955760, win 1968, options [nop,nop,TS
val 4537984 ecr 1648164], length 61
15:22:03.402676 IP 192.168.122.1.59458 > 192.168.122.116.3389: Flags [P.],
seq 0:61, ack 1, win 1968, options [nop,nop,TS val 4537984 ecr 1648164],
length 61

--- 30 seconds here ---
15:24:03.722660 IP 192.168.122.1.59458 > 192.168.122.116.3389: Flags [P.],
seq 0:61, ack 1, win 1968, options [nop,nop,TS val 4568064 ecr 1648164],
length 61
15:24:03.722675 IP 192.168.122.1.59458 > 192.168.122.116.3389: Flags [P.],
seq 0:61, ack 1, win 1968, options [nop,nop,TS val 4568064 ecr 1648164],
length 61

Looks like a network issue?

On 5 June 2013 15:17, Stefano Doni <email address hidden> wrote:

> Hi Serge,
>
> Please find attached the remmina configuration screenshots.
>
> Yes, when the RDP connection hangs I simply close the RDP client and start
> a new one immediately and it works correctly.
>
> As I mentioned, please consider that this happens also with a completely
> different RDP client, so it probably has nothing to do with remmina itself.
>
> Thank you!
>
>
> On 5 June 2013 14:30, Serge Hallyn <email address hidden> wrote:
>
>> Quoting f3a97 (<email address hidden>):
>> > Hi Serge,
>> >
>> > I'm invoking remmina from the Unity shell, not from the terminal.
>>
>> Could you please tell me, perhaps with some screenshots, exactly what
>> boxes you fill in how to start the connection?
>>
>> > As regard your question: I'm connecting to the VM via RDP, not VNC (it
>> is
>> > much faster).
>>
>> IIUC RDP connects to the guest itself over the guest's network. vnc wlil
>> connect to the kvm process. So if the problem has to do with the
>> guest's networking hanging, then connecting over vnc might let you
>> analyze the guest state despite guest network being down.
>>
>> When the RDP connection hangs, can you simply start a new one
>> immediately?
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1180777
>>
>> Title:
>> Windows 7 VM freeze on Ubuntu 12.04 KVM
>>
>> Status in “qemu-kvm” package in Ubuntu:
>> New
>>
>> Bug description:
>> Hi,
>>
>> I recently started using KVM over VirtualBox for my Office needs. I
>> setup a Windows 7 VM on KVM and started using it through remote
>> desktop.
>>
>> What happens is that, after some hours of usage, the remote desktop
>> connection freezes. I thought it was a remmina bug, as the it was
>> enough to kill and restart it to successfully connect again to the VM.
>>
>> However, today I've switched to a different RDP client (2X Client
>> chromium app) and the freeze just happened again!
>>
>> Some information:
>> - the host and the VM are completely idle when the freeze occurs
>> - I've tried sniffing the network packets toward the RDP port during
>> the freeze and found that the client is sending packets but no packet is
>> sent back
>>
>>
>> Could this be a KVM issue? How can I further debug this one (I expect
>> the freeze to happen again...)?
>>
>> ProblemType: Bug
>> DistroRelease: Ubuntu 12.04
>> Package: kvm 1:84+dfsg-0ubuntu16+1.0+noroms+0ubuntu14.8
>> ProcVersionSignature: Ubuntu 3.2.0-41.66-generic 3.2.42
>> Uname: Linux 3.2.0-41-generic x86_64
>> ApportVersion: 2.0.1-0ubuntu17.2
>> Architecture: amd64
>> Date: Thu May 16 14:12:40 2013
>> MachineType: Hewlett-Packard HP ProBook 4520s
>> MarkForUpload: True
>> ProcEnviron:
>> TERM=xterm
>> PATH=(custom, no user)
>> LANG=en_US.UTF-8
>> SHELL=/bin/bash
>> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-41-generic
>> root=UUID=D2E20BC3E20BAAB5 loop=/hostname/disks/root.disk ro quiet splash
>> vt.handoff=7
>> SourcePackage: qemu-kvm
>> UpgradeStatus: No upgrade log present (probably fresh install)
>> dmi.bios.date: 08/26/2010
>> dmi.bios.vendor: Hewlett-Packard
>> dmi.bios.version: 68AZZ Ver. F.0A
>> dmi.board.name: 1411
>> dmi.board.vendor: Hewlett-Packard
>> dmi.board.version: KBC Version 57.30
>> dmi.chassis.type: 10
>> dmi.chassis.vendor: Hewlett-Packard
>> dmi.modalias:
>> dmi:bvnHewlett-Packard:bvr68AZZVer.F.0A:bd08/26/2010:svnHewlett-Packard:pnHPProBook4520s:pvr:rvnHewlett-Packard:rn1411:rvrKBCVersion57.30:cvnHewlett-Packard:ct10:cvr:
>> dmi.product.name: HP ProBook 4520s
>> dmi.sys.vendor: Hewlett-Packard
>>
>> To manage notifications about this bug go to:
>>
>> https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1180777/+subscriptions
>>
>
>

It just happened again.

This time I have recorded some new information.

netstat shows a costant, non zero Send-Q:

@ubuntu:~/WORKS/Programs/apache-jmeter-2.9/bin$ date ; netstat -atn | grep
3389
Wed Jun  5 15:23:24 CEST 2013
tcp        0   7301 192.168.122.1:59458     192.168.122.116:3389
 ESTABLISHED
@ubuntu:~/WORKS/Programs/apache-jmeter-2.9/bin$ date ; netstat -atn | grep
3389
Wed Jun  5 15:23:27 CEST 2013
tcp        0   7301 192.168.122.1:59458     192.168.122.116:3389
 ESTABLISHED
@ubuntu:~/WORKS/Programs/apache-jmeter-2.9/bin$ date ; netstat -atn | grep
3389
Wed Jun  5 15:23:47 CEST 2013
tcp        0   7301 192.168.122.1:59458     192.168.122.116:3389
 ESTABLISHED
@ubuntu:~/WORKS/Programs/apache-jmeter-2.9/bin$ date ; netstat -atn | grep
3389
Wed Jun  5 15:24:34 CEST 2013
tcp        0   7301 192.168.122.1:59458     192.168.122.116:3389
 ESTABLISHED

Sniffing that connection with tcpdump, I can see that no packets flows back
from the VM (port 3389) back to the client:

Looks like a network issue?

On 5 June 2013 15:17, Stefano Doni <stefano.doni@gmail.com> wrote:

> Hi Serge,
>
> Please find attached the remmina configuration screenshots.
>
> Yes, when the RDP connection hangs I simply close the RDP client and start
> a new one immediately and it works correctly.
>
> As I mentioned, please consider that this happens also with a completely
> different RDP client, so it probably has nothing to do with remmina itself.
>
> Thank you!
>
>
> On 5 June 2013 14:30, Serge Hallyn <1180777@bugs.launchpad.net> wrote:
>
>> Quoting f3a97 (1180777@bugs.launchpad.net):
>> > Hi Serge,
>> >
>> > I'm invoking remmina from the Unity shell, not from the terminal.
>>
>> Could you please tell me, perhaps with some screenshots, exactly what
>> boxes you fill in how to start the connection?
>>
>> > As regard your question: I'm connecting to the VM via RDP, not VNC (it
>> is
>> > much faster).
>>
>> IIUC RDP connects to the guest itself over the guest's network.  vnc wlil
>> connect to the kvm process.  So if the problem has to do with the
>> guest's networking hanging, then connecting over vnc might let you
>> analyze the guest state despite guest network being down.
>>
>> When the RDP connection hangs, can you simply start a new one
>> immediately?
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1180777
>>
>> Title:
>>   Windows 7 VM freeze on Ubuntu 12.04 KVM
>>
>> Status in “qemu-kvm” package in Ubuntu:
>>   New
>>
>> Bug description:
>>   Hi,
>>
>>   I recently started using KVM over VirtualBox for my Office needs. I
>>   setup a Windows 7 VM on KVM and started using it through remote
>>   desktop.
>>
>>   What happens is that, after some hours of usage, the remote desktop
>>   connection freezes. I thought it was a remmina bug, as the it was
>>   enough to kill and restart it to successfully connect again to the VM.
>>
>>   However, today I've switched to a different RDP client (2X Client
>>   chromium app) and the freeze just happened again!
>>
>>   Some information:
>>   - the host and the VM are completely idle when the freeze occurs
>>   - I've tried sniffing the network packets toward the RDP port during
>> the freeze and found that the client is sending packets but no packet is
>> sent back
>>
>>
>>   Could this be a KVM issue? How can I further debug this one (I expect
>> the freeze to happen again...)?
>>
>>   ProblemType: Bug
>>   DistroRelease: Ubuntu 12.04
>>   Package: kvm 1:84+dfsg-0ubuntu16+1.0+noroms+0ubuntu14.8
>>   ProcVersionSignature: Ubuntu 3.2.0-41.66-generic 3.2.42
>>   Uname: Linux 3.2.0-41-generic x86_64
>>   ApportVersion: 2.0.1-0ubuntu17.2
>>   Architecture: amd64
>>   Date: Thu May 16 14:12:40 2013
>>   MachineType: Hewlett-Packard HP ProBook 4520s
>>   MarkForUpload: True
>>   ProcEnviron:
>>    TERM=xterm
>>    PATH=(custom, no user)
>>    LANG=en_US.UTF-8
>>    SHELL=/bin/bash
>>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-41-generic
>> root=UUID=D2E20BC3E20BAAB5 loop=/hostname/disks/root.disk ro quiet splash
>> vt.handoff=7
>>   SourcePackage: qemu-kvm
>>   UpgradeStatus: No upgrade log present (probably fresh install)
>>   dmi.bios.date: 08/26/2010
>>   dmi.bios.vendor: Hewlett-Packard
>>   dmi.bios.version: 68AZZ Ver. F.0A
>>   dmi.board.name: 1411
>>   dmi.board.vendor: Hewlett-Packard
>>   dmi.board.version: KBC Version 57.30
>>   dmi.chassis.type: 10
>>   dmi.chassis.vendor: Hewlett-Packard
>>   dmi.modalias:
>> dmi:bvnHewlett-Packard:bvr68AZZVer.F.0A:bd08/26/2010:svnHewlett-Packard:pnHPProBook4520s:pvr:rvnHewlett-Packard:rn1411:rvrKBCVersion57.30:cvnHewlett-Packard:ct10:cvr:
>>   dmi.product.name: HP ProBook 4520s
>>   dmi.sys.vendor: Hewlett-Packard
>>
>> To manage notifications about this bug go to:
>>
>> https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1180777/+subscriptions
>>
>
>