[libvirt-users] live migration error without shared storage

Luengffy XUE feiliangxue at gmail.com
Fri Oct 28 06:54:04 UTC 2011


2011/10/28 Eric Blake <eblake at redhat.com>

> On 10/27/2011 09:37 PM, Luengffy XUE wrote:
>
>> command:
>>
>> virsh migrate --live --copy-storage-all vm
>> qemu+ssh://destinationHost/**system
>>
>> error
>> : unexpected failure
>>
>> PS  log file in the jpg
>>
>
> Your jpg takes up a lot of bandwidth; it would be more efficient if you
> copy and paste the text from your console, rather than a screenshot of the
> console.
>
>
I appologize for this. I ca paste the text version.
In the destinaiton host's   /var/log/libvirt/qemu/vm.log
It is described as:

2011-10-28 11:29:31.715: starting up
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin
QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.14 -enable-kvm -m 512 -smp
1,sockets=1,cores=1,threads=1 -name VCentOS -uuid
f4dcf69e-5c23-a4bd-0262-0fee80b2bba6 -nodefconfig -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/VCentOS.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=readline -rtc base=utc -boot c
-drive
file=/var/lib/libvirt/images/CentOS.qcow2,if=none,id=drive-ide0-0-0,format=raw
-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive
if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device
ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev
tap,fd=19,id=hostnet0 -device
rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:f6:2b:3a,bus=pci.0,addr=0x3
-chardev pty,id=charserial0 -device
isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:0 -vga cirrus
-incoming tcp:0.0.0.0:49170 -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4
char device redirected to /dev/pts/1
Receiving block device images
Completed 0 %
qemu: warning: error while loading state section id 2
load of migration failed
2011-10-28 11:29:32.401: shutting down






> As to the actual error, I'm not sure if I can offer advice until I try to
> reproduce it, but I do know that --copy-storage-all hasn't received as much
> testing.  Make sure that an empty file exists on the destination prior to
> the migration attempt, in case the error is stemming from qemu on the
> destination unable to open the file with SELinux permissions in force.
>
>
I  have created the right image file on the destination host.I have already
reardown the apparmor. I want to know how to shut down the selinux on the
ubuntu server.






> Also, what version of libvirt are you using?  Newer libvirt tries harder to
> avoid the lame error messages from qemu being unable to start a migration
> without giving any reasons why.
>
>

The version of libvit I am using is:

Compiled against library  :  libvir 0.8.8
Using library:      libvir  0.8.8
Using API :  QEMU 0.8.8
Runing hypervisor: QEMU 0.14.0



> --
> Eric Blake   eblake at redhat.com    +1-801-349-2682
> Libvirt virtualization library http://libvirt.org
>


Regards
Leungffy
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