<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><pre>At 2017-04-26 21:59:46, "Daniel P. Berrange" <berrange@redhat.com> wrote:
>On Wed, Apr 26, 2017 at 08:51:39AM -0500, Eric Blake wrote:
>> >
>> > I migrated a Windows 7 VM with libvirtd tunnelled, the VM halted
>> > on the target although the status is running.
>
>What do you mean by halted ? The guest OS has shutdown, or QEMU
>has crashed, or something else ?
<div>></div><div><br></div><div>I can still connect to the guest OS and see the windows opened before migrate on the target, but cann't click any more,</div><div>and there's no effect when send "ctrl+alt+del" keys by virsh.</div><div><br></div>>> >
>> >
>> > [root@test15 ~]# virsh migrate --live --p2p --tunnelled i-000000ac qemu+tcp://192.168.65.13/system
>> >
>> >
>> > But when migrated with qemu native mode, the VM runs well.
>> >
>> >
>> > [root@test15 ~]# virsh migrate --live --p2p i-000000ac qemu+tcp://192.168.65.13/system
>
>From QEMU's POV there's no difference between these modes - in both cases
>QEMU is just getting a file descriptor from libvirt.
>
>So any problems with the guest after migration are
<div>></div><div><br></div><div>When I destroy the guest and restart, the guest OS works well.</div><div><br></div><div>The attachment is a stripped version log.</div><div><br></div><div><br></div>>> > System Info:
>> > Release: Centos 7.2
>> > Kernel: 3.10.0-327.28.3.el7.x86_64
>> > Qemu: qemu-kvm-rhev-2.3.0
>> > Libvirt: libvirt-1.2.17/libvirt-2.0.0
>
>Does the 2 libvirt versions mean you are live-migrating between two different
>versions of CentOS ? If so, this also likely means two different versions
>of QEMU involved.
>
>> > CPU: AMD Opteron(TM) Processor 6212
>> >
>> >
>> > As CPUFrequency may lead windows migrate halt, I have disabled Power Management.
>> >
>> >
>> > Does anyone have some sugestions?
>> >
>> >
>> > Thanks,
>> > Linwen Deng
>> >
>> >
>> > vm.xml
>> >
>> >
>> > <domain type='kvm' id='8'>
>> > <name>i-000000ac</name>
>> > <uuid>53f0710f-b25e-4f47-a7cf-c15a9409fdc3</uuid>
>> > <metadata>
>> > <nova:instance xmlns:nova="http://openstack.org/xmlns/libvirt/nova/1.0">
>> > <nova:package version="12.0.0-4"/>
>> > <nova:name>c7-vm15-test15-7</nova:name>
>> > <nova:creationTime>2017-04-14 06:48:54</nova:creationTime>
>> > <nova:flavor name="oeflavor-4-2048-20">
>> > <nova:memory>2048</nova:memory>
>> > <nova:disk>20</nova:disk>
>> > <nova:swap>0</nova:swap>
>> > <nova:ephemeral>0</nova:ephemeral>
>> > <nova:vcpus>4</nova:vcpus>
>> > </nova:flavor>
>> > <nova:owner>
>> > <nova:user uuid="b0f21b1d16b147ffb3f7713716cc894a">admin</nova:user>
>> > <nova:project uuid="ae883f160c3c41db850d5cde8de8208b">service</nova:project>
>> > </nova:owner>
>> > </nova:instance>
>> > </metadata>
>> > <memory unit='KiB'>2097152</memory>
>> > <currentMemory unit='KiB'>2097152</currentMemory>
>> > <memoryBacking>
>> > <hugepages>
>> > <page size='2048' unit='KiB' nodeset='0'/>
>> > </hugepages>
>> > </memoryBacking>
>> > <vcpu placement='static'>2</vcpu>
>> > <cputune>
>> > <shares>4096</shares>
>> > <vcpupin vcpu='0' cpuset='4-7'/>
>> > <vcpupin vcpu='1' cpuset='4-7'/>
>> > <emulatorpin cpuset='4-7'/>
>> > </cputune>
>> > <resource>
>> > <partition>/machine</partition>
>> > </resource>
>> > <sysinfo type='smbios'>
>> > <system>
>> > <entry name='manufacturer'>Fedora Project</entry>
>> > <entry name='product'>OpenStack Nova</entry>
>> > <entry name='version'>12.0.0-4</entry>
>> > <entry name='serial'>95637afe-453f-42a8-b198-df673ab59c91</entry>
>> > <entry name='uuid'>53f0710f-b25e-4f47-a7cf-c15a9409fdc3</entry>
>> > <entry name='family'>Virtual Machine</entry>
>> > </system>
>> > </sysinfo>
>> > <os>
>> > <type arch='x86_64' machine='pc-i440fx-rhel7.2.0'>hvm</type>
>> > <boot dev='cdrom'/>
>> > <boot dev='hd'/>
>> > <boot dev='fd'/>
>> > <smbios mode='sysinfo'/>
>> > </os>
>> > <features>
>> > <acpi/>
>> > <apic/>
>> > </features>
>> > <cpu mode='host-model'>
>> > <model fallback='allow'/>
>> > <topology sockets='2' cores='1' threads='1'/>
>> > </cpu>
>> > <clock offset='utc'>
>> > <timer name='pit' tickpolicy='delay'/>
>> > <timer name='rtc' tickpolicy='catchup'/>
>> > <timer name='hpet' present='no'/>
>> > </clock>
>
>If nothing else, this guest is incorrectly configured for running
>the Windows OS. I suspect you forget to set the Glance image
>property needed to tell Nova that it is windows.
>
>Specifically it is missing hyperv paravirt <timer>, and many hyperv
>paravirt <feature> elements.
>
>This will make Windows guests unstable and liable to hit BSOD
>
>
>Regards,
>Daniel
>--
>|: https://berrange.com -o- https://www.flickr.com/photos/dberrange :|
>|: https://libvirt.org -o- https://fstop138.berrange.com :|
>|: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
</pre></div><br><br><span title="neteasefooter"><p> </p></span>