** Description changed: + [Impact] + + * Migration from Precise to Trusty not working + + * Fix by dropping a duplicate alias which lets the Trusty qemu fail to + properly detect and handle the type of the incoming guest. + + [Test Case] + + * Prepare a Precise and a KVM Host capable to run KVM and reaching each + other for live migration. + * Spawn a guest on Precise e.g. with uvt + $ uvt-kvm create --password=ubuntu kvmguest-precise release=precise \ + arch=amd64 label=daily + * Migrate that guest to the Trusty host like: + virsh migrate --live kvmguest-precise "qemu+ssh://10.0.4.193/system + * Note, here is a more complex test for it that takes care of setting up + the rest of the details that can be needed (Host/Env setup): https://code.launchpad.net/~ubuntu-server/ubuntu/+source/qemu-migration-test/+git/qemu-migration-test/+ref/master + + [Regression Potential] + + * We are modifying machine types which can affect: + - migrations from former / to future types + - upgrades (starting a guest formerly working fails after upgrade) + - guest view of the virtual system as defined by the machine type + + * We tested for all of these, see the logs attached - but there might + always be a miss so the more testing the better. + + [Other Info] + + * n/a + + --- + Even though #1291321 was supposed to fix this issue, I'm running into live migration issues when attempting to move a VM from a Precise host to a Trusty host. The VM is using the pc-1.0-qemu-kvm machine type as required. Process: /usr/bin/kvm -name instance-## -S -machine pc-1.0-qemu-kvm,accel=kvm -cpu kvm64,+lahf_lm,+rdtscp,+avx,+xsave,+aes,+tsc-deadline,+popcnt,+x2apic,+sse4.2,+sse4.1,+ssse3,+pclmuldq -m 1024 -smp 1,sockets=1,cores=1,threads=1 -uuid XX -smbios type=1,manufacturer=OpenStack Foundation,product=OpenStack Nova,version=2013.1.5,serial=4c4c4544-0038-4810-804d-b6c04f515731,uuid=XX -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-##.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,clock=vm,driftfix=slew -no-kvm-pit-reinjection -no-hpet -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/var/lib/nova/instances/XX/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/dev/disk/by-id/dm-uuid-mpath-3600144f07a6e924e000056950d010025,if=none,id=drive-virtio-disk1,format=raw,seria l=7903c916-8aba-4ea3-b38c-964d104cdada,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk1,id=virtio-disk1 -drive file=/var/lib/nova/instances/XX/disk.config,if=none,id=drive-ide0-1-1,readonly=on,format=raw,cache=none -device ide-cd,bus=ide.1,unit=1,drive=drive-ide0-1-1,id=ide0-1-1 -netdev tap,fd=88,id=hostnet0,vhost=on,vhostfd=90 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=fa:16:3e:c8:14:90,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/var/lib/nova/instances/XX/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -device usb-tablet,id=input0 -vnc 0.0.0.0:53 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 Source version: 1.0+noroms-0ubuntu14.22 Target version: 2.0.0+dfsg-2ubuntu1.21 Error when migrating: ... char device redirected to /dev/pts/3 (label charserial1) Length mismatch: vga.vram: 1000000 in != 800000 qemu: warning: error while loading state for instance 0x0 of device 'ram' load of migration failed
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1536331 Title: Precise to Trusty live migration failing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1536331/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
