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Message #69532
[Bug 1325560] Re: kvm virtio netdevs lose network connectivity under "enough" load
I am seeing a similar issue but instead of the network breaking I get
very variable latency. It's like the VM is pausing.
This only happens with virtio networking. Switching to e1000 fixes the
issue.
Ubuntu 14.04 3.13.0-30-generic on both the host machines and VM's with
bridge networking.
64 bytes from 10.3.0.2: icmp_seq=59 ttl=64 time=0.717 ms
64 bytes from 10.3.0.2: icmp_seq=60 ttl=64 time=0.706 ms
64 bytes from 10.3.0.2: icmp_seq=61 ttl=64 time=0.454 ms
64 bytes from 10.3.0.2: icmp_seq=62 ttl=64 time=0.635 ms
64 bytes from 10.3.0.2: icmp_seq=63 ttl=64 time=0.707 ms
64 bytes from 10.3.0.2: icmp_seq=64 ttl=64 time=2333 ms # Starts here
64 bytes from 10.3.0.2: icmp_seq=65 ttl=64 time=856 ms
64 bytes from 10.3.0.2: icmp_seq=66 ttl=64 time=350 ms
64 bytes from 10.3.0.2: icmp_seq=67 ttl=64 time=80.1 ms
64 bytes from 10.3.0.2: icmp_seq=68 ttl=64 time=12.5 ms
64 bytes from 10.3.0.2: icmp_seq=69 ttl=64 time=2.71 ms
64 bytes from 10.3.0.2: icmp_seq=70 ttl=64 time=1.71 ms
64 bytes from 10.3.0.2: icmp_seq=71 ttl=64 time=0.597 ms
64 bytes from 10.3.0.2: icmp_seq=72 ttl=64 time=0.729 ms
64 bytes from 10.3.0.2: icmp_seq=73 ttl=64 time=0.727 ms
64 bytes from 10.3.0.2: icmp_seq=74 ttl=64 time=0.642 ms
64 bytes from 10.3.0.2: icmp_seq=75 ttl=64 time=0.715 ms
64 bytes from 10.3.0.2: icmp_seq=76 ttl=64 time=0.715 ms
64 bytes from 10.3.0.2: icmp_seq=77 ttl=64 time=0.776 ms
64 bytes from 10.3.0.2: icmp_seq=78 ttl=64 time=0.742 ms
64 bytes from 10.3.0.2: icmp_seq=79 ttl=64 time=0.770 ms
--
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https://bugs.launchpad.net/bugs/1325560
Title:
kvm virtio netdevs lose network connectivity under "enough" load
Status in libvirt virtualization API:
New
Status in The Linux Kernel:
Incomplete
Status in “linux” package in Ubuntu:
New
Status in “qemu-kvm” package in Ubuntu:
Incomplete
Bug description:
Networking breaks after awhile in kvm guests using virtio networking.
We run data intensive jobs on our virtual cluster (OpenStack Grizzly
Installed on Ubuntu 12.04 Server). The job runs fine on a single
worker VM (no data transfer involved). As soon as I add more nodes
where the workers need to exchange some data, one of the worker VM
goes down. Ping responds with 'host unreachable'. Logging in via the
serial console shows no problems: eth0 is up, can ping the local host,
but no outside connectivity. Restart the network
(/etc/init.d/networking restart) does nothing. Reboot the machine and
it comes alive again.
14/06/01 18:30:06 INFO YarnClientClusterScheduler: YarnClientClusterScheduler.postStartHook done
14/06/01 18:30:06 INFO MemoryStore: ensureFreeSpace(190758) called with curMem=0, maxMem=308713881
14/06/01 18:30:06 INFO MemoryStore: Block broadcast_0 stored as values to memory (estimated size 186.3 KB, free 294.2 MB)
14/06/01 18:30:06 INFO FileInputFormat: Total input paths to process : 1
14/06/01 18:30:06 INFO NetworkTopology: Adding a new node: /default-rack/10.20.20.28:50010
14/06/01 18:30:06 INFO NetworkTopology: Adding a new node: /default-rack/10.20.20.23:50010
14/06/01 18:30:06 INFO SparkContext: Starting job: count at hello_spark.py:15
14/06/01 18:30:06 INFO DAGScheduler: Got job 0 (count at hello_spark.py:15) with 2 output partitions (allowLocal=false)
14/06/01 18:30:06 INFO DAGScheduler: Final stage: Stage 0 (count at hello_spark.py:15)
14/06/01 18:30:06 INFO DAGScheduler: Parents of final stage: List()
14/06/01 18:30:06 INFO DAGScheduler: Missing parents: List()
14/06/01 18:30:06 INFO DAGScheduler: Submitting Stage 0 (PythonRDD[2] at count at hello_spark.py:15), which has no missing parents
14/06/01 18:30:07 INFO DAGScheduler: Submitting 2 missing tasks from Stage 0 (PythonRDD[2] at count at hello_spark.py:15)
14/06/01 18:30:07 INFO YarnClientClusterScheduler: Adding task set 0.0 with 2 tasks
14/06/01 18:30:08 INFO YarnClientSchedulerBackend: Registered executor: Actor[akka.tcp://sparkExecutor@host-10-20-20-28.novalocal:44417/user/Executor#-1352071582] with ID 1
14/06/01 18:30:08 INFO TaskSetManager: Starting task 0.0:0 as TID 0 on executor 1: host-10-20-20-28.novalocal (PROCESS_LOCAL)
14/06/01 18:30:08 INFO TaskSetManager: Serialized task 0.0:0 as 3123 bytes in 14 ms
14/06/01 18:30:09 INFO BlockManagerMasterActor$BlockManagerInfo: Registering block manager host-10-20-20-28.novalocal:42960 with 588.8 MB RAM
14/06/01 18:30:16 INFO BlockManagerMasterActor$BlockManagerInfo: Added rdd_1_0 in memory on host-10-20-20-28.novalocal:42960 (size: 308.2 MB, free: 280.7 MB)
14/06/01 18:30:17 INFO YarnClientSchedulerBackend: Registered executor: Actor[akka.tcp://sparkExecutor@host-10-20-20-23.novalocal:58126/user/Executor#1079893974] with ID 2
14/06/01 18:30:17 INFO TaskSetManager: Starting task 0.0:1 as TID 1 on executor 2: host-10-20-20-23.novalocal (PROCESS_LOCAL)
14/06/01 18:30:17 INFO TaskSetManager: Serialized task 0.0:1 as 3123 bytes in 1 ms
14/06/01 18:30:17 INFO BlockManagerMasterActor$BlockManagerInfo: Registering block manager host-10-20-20-23.novalocal:56776 with 588.8 MB RAM
fj14/06/01 18:31:20 WARN BlockManagerMasterActor: Removing BlockManager BlockManagerId(1, host-10-20-20-28.novalocal, 42960, 0) with no recent heart beats: 55828ms exceeds 45000ms
14/06/01 18:42:23 INFO YarnClientSchedulerBackend: Executor 2 disconnected, so removing it
14/06/01 18:42:23 ERROR YarnClientClusterScheduler: Lost executor 2 on host-10-20-20-23.novalocal: remote Akka client disassociated
The same job finishes flawlessly on a single worker.
System Information:
==================
Description: Ubuntu 12.04.4 LTS
Release: 12.04
Linux 3.8.0-35-generic #52~precise1-Ubuntu SMP Thu Jan 30 17:24:40 UTC
2014 x86_64
libvirt-bin:
--------------
Installed: 1.1.1-0ubuntu8~cloud2
Candidate: 1.1.1-0ubuntu8.7~cloud1
Version table:
1.1.1-0ubuntu8.7~cloud1 0
500 http://ubuntu-cloud.archive.canonical.com/ubuntu/ precise-updates/havana/main amd64 Packages
*** 1.1.1-0ubuntu8~cloud2 0
100 /var/lib/dpkg/status
0.9.8-2ubuntu17.19 0
500 http://se.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
0.9.8-2ubuntu17.17 0
500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
0.9.8-2ubuntu17 0
500 http://se.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
qemu-kvm:
---------------
Installed: 1.5.0+dfsg-3ubuntu5~cloud0
Candidate: 1.5.0+dfsg-3ubuntu5.4~cloud0
Version table:
1.5.0+dfsg-3ubuntu5.4~cloud0 0
500 http://ubuntu-cloud.archive.canonical.com/ubuntu/ precise-updates/havana/main amd64 Packages
*** 1.5.0+dfsg-3ubuntu5~cloud0 0
100 /var/lib/dpkg/status
1.0+noroms-0ubuntu14.15 0
500 http://se.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
1.0+noroms-0ubuntu14.14 0
500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
1.0+noroms-0ubuntu13 0
500 http://se.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
XML DUMP for a VM
-----------------------------
<domain type='kvm' id='7'>
<name>instance-000001b6</name>
<uuid>731c2191-fa82-4a38-9f52-e48fb37e92c8</uuid>
<memory unit='KiB'>8388608</memory>
<currentMemory unit='KiB'>8388608</currentMemory>
<vcpu placement='static'>4</vcpu>
<resource>
<partition>/machine</partition>
</resource>
<sysinfo type='smbios'>
<system>
<entry name='manufacturer'>OpenStack Foundation</entry>
<entry name='product'>OpenStack Nova</entry>
<entry name='version'>2013.2.3</entry>
<entry name='serial'>01d3d524-32eb-e011-8574-441ea15e3971</entry>
<entry name='uuid'>731c2191-fa82-4a38-9f52-e48fb37e92c8</entry>
</system>
</sysinfo>
<os>
<type arch='x86_64' machine='pc-i440fx-1.5'>hvm</type>
<boot dev='hd'/>
<smbios mode='sysinfo'/>
</os>
<features>
<acpi/>
<apic/>
</features>
<cpu mode='host-model'>
<model fallback='allow'/>
</cpu>
<clock offset='utc'>
<timer name='pit' tickpolicy='delay'/>
<timer name='rtc' tickpolicy='catchup'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/kvm-spice</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='/var/lib/nova/instances/731c2191-fa82-4a38-9f52-e48fb37e92c8/disk'/>
<target dev='vda' bus='virtio'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</disk>
<controller type='usb' index='0'>
<alias name='usb0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'>
<alias name='pci0'/>
</controller>
<interface type='bridge'>
<mac address='fa:16:3e:a7:de:97'/>
<source bridge='qbr43f8d3a5-e4'/>
<target dev='tap43f8d3a5-e4'/>
<model type='virtio'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='file'>
<source path='/var/lib/nova/instances/731c2191-fa82-4a38-9f52-e48fb37e92c8/console.log'/>
<target port='0'/>
<alias name='serial0'/>
</serial>
<serial type='pty'>
<source path='/dev/pts/6'/>
<target port='1'/>
<alias name='serial1'/>
</serial>
<console type='file'>
<source path='/var/lib/nova/instances/731c2191-fa82-4a38-9f52-e48fb37e92c8/console.log'/>
<target type='serial' port='0'/>
<alias name='serial0'/>
</console>
<input type='tablet' bus='usb'>
<alias name='input0'/>
</input>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='5904' autoport='yes' listen='0.0.0.0' keymap='en-us'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<video>
<model type='cirrus' vram='9216' heads='1'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<alias name='balloon0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</memballoon>
</devices>
<seclabel type='dynamic' model='apparmor' relabel='yes'>
<label>libvirt-731c2191-fa82-4a38-9f52-e48fb37e92c8</label>
<imagelabel>libvirt-731c2191-fa82-4a38-9f52-e48fb37e92c8</imagelabel>
</seclabel>
</domain>
I am reporting this for spark but this should be valid for any
applications that involve fast data transfer between VMs. The bug has
been reported in centos forums as well.
http://bugs.centos.org/view.php?id=5526
and an older bug report on launchpad:
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/997978?comments=all
---
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
DistroRelease: Ubuntu 12.04
InstallationMedia: Ubuntu-Server 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.2)
MarkForUpload: True
Package: qemu-kvm 1.5.0+dfsg-3ubuntu5~cloud0
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5
Tags: precise third-party-packages
Uname: Linux 3.8.0-29-generic x86_64
UnreportableReason: This is not an official Ubuntu package. Please remove any third party package and try again.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo
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