We are reliably seeing this post live-migration on an openstack
platform.
Setup:
hypervisor ==> Ubuntu 12.04.3 LTS
libvirt ===> 1.0.2-0ubuntu11.13.04.2~cloud0
qemu-kvm ===> 1.0+noroms-0ubuntu14.10
storage: NFS exports
Guest VM OS: Ubuntu 12.04.1 LTS and CentOS 6.4
We have ept enabled.
Sample instance:
<domain type="kvm">
<uuid>f3c16d27-2586-44c8-b9d9-84b74b42b5d3</uuid>
<name>instance-00000508</name>
<memory>4194304</memory>
<vcpu>2</vcpu>
<os>
<type>hvm</type>
<boot dev="hd"/>
</os>
<features>
<acpi/>
</features>
<clock offset="utc">
<timer name="pit" tickpolicy="delay"/>
<timer name="rtc" tickpolicy="catchup"/>
</clock>
<cpu mode="host-model" match="exact"/>
<devices>
<disk type="file" device="disk">
<driver name="qemu" type="qcow2" cache="none"/>
<source file="/var/lib/nova/instances/instance-00000508/disk"/>
<target bus="virtio" dev="vda"/>
</disk>
<interface type="bridge">
<mac address="fa:16:3e:5d:0e:6a"/>
<model type="virtio"/>
<source bridge="qbrf43e9d83-56"/>
<filterref filter="nova-instance-instance-00000508-fa163e5d0e6a">
<parameter name="IP" value="10.253.138.156"/>
<parameter name="DHCPSERVER" value="10.253.138.51"/>
</filterref>
</interface>
<serial type="file">
<source path="/var/lib/nova/instances/instance-00000508/console.log"/>
</serial>
<serial type="pty"/>
<input type="tablet" bus="usb"/>
<graphics type="vnc" autoport="yes" keymap="en-us" listen="0.0.0.0"/>
</devices>
</domain>
We have a test environment and are willing to assist in debugging.
Please let us know what we can do to help.
Cheers,
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https://bugs.launchpad.net/bugs/1100843
Title:
Live Migration Causes Performance Issues
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