Today my guest machine was completely offline.
I do not know why or what caused it.
There was nothing abnormal in VBox logs and the guest machine worked perfectly well except for the fact that the network did not respond.
The network was perfectly fine on the host machine.
In the system logs I found these errors:
Code: Select all
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Apr 2 08:31:51 server kernel: virtio_net virtio0: output.0:id 74 is not a head!
Apr 2 08:31:51 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:51 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:51 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:51 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:51 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:51 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:51 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:51 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:51 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:51 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:56 server kernel: net_ratelimit: 736 callbacks suppressed
Apr 2 08:31:56 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:56 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:56 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:56 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:56 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:56 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:56 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:56 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:56 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:31:56 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
.....
.....
Apr 2 08:32:41 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:41 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:41 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:41 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:41 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:41 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:41 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:41 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:41 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:41 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:42 server kernel: TCP: request_sock_TCP: Possible SYN flooding on port 80. Sending cookies. Check SNMP counters.
Apr 2 08:32:46 server kernel: net_ratelimit: 567 callbacks suppressed
Apr 2 08:32:46 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
Apr 2 08:32:46 server kernel: net enp0s3: Unexpected TXQ (0) queue failure: -5
.....
https://bugzilla.redhat.com/show_bug.cgi?id=1264021
https://bugs.launchpad.net/qemu/+bug/1359394
https://www.virtualbox.org/ticket/11455
This is the same machine I have freezing problems reported here. I opened a new thread because this error is completely different I've seen so far and does not seem to be related to freezes.
Host:
Windows Server 2012 R2 Standard - 64 bits
32GB RAM
Intel Xeon E5-1620 v3
VirtualBox version 5.1.8 r111374 with Extension Pack
Guest:
CentOS Linux release 7.3.1611 (Core) - 64 bits
Guest additions installed
3D or 2D is not enabled
Reboot the machine solved the problem. But I would like to prevent this from happen again.