Dear all,
we're having two different problems with migrations in libvirt, running as root user on host machines with CentOS release 5.5 (Final), kernel: Linux 2.6.32.24 #3 SMP Fri Oct 29 16:22:02 BST 2010 x86_64 x86_64 x86_64 GNU/Linux
First case:
virsh version
Compiled against library: libvir 0.9.4
Using library: libvir 0.9.4
Using API: QEMU 0.9.4
Running hypervisor: QEMU 1.0.50
Migrations work well for a basic VM, but if we attach a disk to the usb bus migration is no longer possible and fails with the error message: "error: operation failed: migration job: is not active". This is regardless of if the device is mounted inside the VM or not (debian). Please find more information attached.
If we attach the same (.iso based) disk to the scsi bus instead, migrations work as normal.
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To mitigate this problem, we tried upgrading to a more recent libvirt version:
Compiled against library: libvir 0.9.9
Using library: libvir 0.9.9
Using API: QEMU 0.9.9
Running hypervisor: QEMU 1.0.50
When trying to migrate a normal (debian) instance from one host to another using the same domain as in the previous successful case without any devices attached, migration fails with the error message "error: Unable to copy socket file handle: Invalid argument". The libvirt.log only has a similar single-line of information: 2012-01-30 15:44:46.772+0000: 7546: error : virNetSocketDupFD:787 : Unable to copy socket file handle: Invalid argument.
The network configuration used here is the same as we successfully used in the 0.9.4 test case, using static ip's.
Thankful for assistance, not really sure what to try next. :)
Regards,
Daniel Espling
Attached disk using:
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/opt/recontext/diskimages/5ZlbCJ.iso'/>
<target dev='sda' bus='usb'/>
</disk>
---
dumpxml shows:
<domain type='kvm' id='107'>
<name>debian_test</name>
<uuid>4736855f-2eba-9c58-e766-df27bc38bd5b</uuid>
<memory>524288</memory>
<currentMemory>524288</currentMemory>
<vcpu>1</vcpu>
<os>
<type arch='x86_64' machine='pc-1.0'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/bin/kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/opt/recontext/diskimages/debian_squeeze.img'/>
<target dev='vda' bus='virtio'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/opt/recontext/diskimages/5ZlbCJ.iso'/>
<target dev='sda' bus='usb'/>
<alias name='usb-disk0'/>
</disk>
<interface type='bridge'>
<mac address='00:03:0a:00:0a:01'/>
<source bridge='eth0'/>
<target dev='vnet0'/>
<model type='virtio'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='pty'>
<source path='/dev/pts/9'/>
<target port='0'/>
<alias name='serial0'/>
</serial>
<console type='pty' tty='/dev/pts/9'>
<source path='/dev/pts/9'/>
<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='5900' autoport='yes'/>
<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>
</domain>
----
virsh migrate debian_test qemu://testgrid8/system
error: operation failed: migration job: is not active
----
virsh dominfo debian_test 1
Id: 107
Name: debian_test
UUID: 4736855f-2eba-9c58-e766-df27bc38bd5b
OS Type: hvm
State: running
CPU(s): 1
CPU time: 19.7s
Max memory: 524288 kB
Used memory: 524288 kB
Persistent: yes
Autostart: disable
Managed save: no
-----
virsh version
Compiled against library: libvir 0.9.4
Using library: libvir 0.9.4
Using API: QEMU 0.9.4
Running hypervisor: QEMU 1.0.50
------
libvirt.log at source:
15:15:09.161: 6457: info : brProbeVnetHdr:442 : Enabling IFF_VNET_HDR
15:15:09.164: 6457: warning : qemuDomainObjTaint:1091 : Domain id=107 name='debian_test' uuid=4736855f-2eba-9c58-e766-df27bc38bd5b is tainted: high-privileges
15:15:09.165: 6457: info : virSecurityDACSetOwnership:99 : Setting DAC user and group on '/opt/recontext/diskimages/debian_squeeze.img' to '0:0'
15:15:09.374: 6455: info : virSecurityDACSetOwnership:99 : Setting DAC user and group on '/opt/recontext/diskimages/5ZlbCJ.iso' to '0:0'
15:16:05.325: 6457: error : qemuMigrationUpdateJobStatus:781 : operation failed: migration job: is not active
15:16:05.380: 6456: info : virSecurityDACRestoreSecurityFileLabel:139 : Restoring DAC user and group on '/opt/recontext/diskimages/5ZlbCJ.iso'
15:16:05.380: 6456: info : virSecurityDACSetOwnership:99 : Setting DAC user and group on '/opt/recontext/diskimages/5ZlbCJ.iso' to '0:0'
15:16:05.584: 6458: error : qemuMigrationJobIsActive:2875 : Requested operation is not valid: domain 'debian_test' is not being migrated
