Yep that Length mismatch is expected - the source and destination do have to match.
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1817268 Title: Input/output error during migration Status in QEMU: New Bug description: Operating system: Ubuntu 18.04.2 LTS qemu version: 2.11.1, but also reproduced with 3.1.0 (compiled manually). virsh --version: 4.0.0 Hello, I am having an issue with migration of UEFI virtual machines. If the --copy-storage-inc and the --tunnelled libvirt flags are used together, the migration fails. The same command for non-uefi virtual machines (e.g the same libvirt xml without the <nvram> and <loader> tags) works. The command/output error is: virsh migrate --verbose --live --p2p --tunnelled --copy-storage-inc --change-protection --abort-on-error testuefi qemu+tcp://<ip>/system error: internal error: qemu unexpectedly closed the monitor: Receiving block device images 2019-02-21T16:20:15.263261Z qemu-system-x86_64: error while loading state section id 2(block) 2019-02-21T16:20:15.263996Z qemu-system-x86_64: load of migration failed: Input/output error If I remove one of the --tunnelled or the --copy-storage-inc flag, it works, for example: virsh migrate --verbose --live --p2p --copy-storage-inc --change-protection --abort-on-error testuefi qemu+tcp://<ip>/system Migration: [100 %] virsh migrate --verbose --live --p2p --tunnelled --change-protection --abort-on-error testuefi qemu+tcp://<ip>/system Migration: [100 %] I have no idea why those two flags combined together produce an error, and only for UEFI virtual machines. here is the libvirt xml definition: <domain type='kvm' id='4'> <name>testuefi</name> <uuid>ce12de05-ec09-4b4b-a27a-47003a511bda</uuid> <description>CentOS 4.5 (32-bit)</description> <memory unit='KiB'>2097152</memory> <currentMemory unit='KiB'>1048576</currentMemory> <vcpu placement='static'>2</vcpu> <cputune> <shares>878</shares> </cputune> <resource> <partition>/machine</partition> </resource> <sysinfo type='smbios'> <system> <entry name='manufacturer'>Apache Software Foundation</entry> <entry name='product'>CloudStack KVM Hypervisor</entry> <entry name='uuid'>ce12de05-ec09-4b4b-a27a-47003a511bda</entry> </system> </sysinfo> <os> <type arch='x86_64' machine='pc-i440fx-2.11'>hvm</type> <loader readonly='yes' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader> <nvram>/var/lib/libvirt/qemu/nvram/testuefi_VARS.fd</nvram> <boot dev='cdrom'/> <boot dev='hd'/> <smbios mode='sysinfo'/> </os> <features> <acpi/> <apic/> <pae/> </features> <cpu mode='custom' match='exact' check='full'> <model fallback='forbid'>Westmere</model> <feature policy='require' name='vmx'/> <feature policy='require' name='vme'/> <feature policy='require' name='pclmuldq'/> <feature policy='require' name='x2apic'/> <feature policy='require' name='hypervisor'/> <feature policy='require' name='arat'/> </cpu> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/kvm-spice</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/var/lib/libvirt/images/testmigration.qcow2'/> <backingStore type='file' index='1'> <format type='raw'/> <source file='/var/lib/libvirt/images/b3e4b880-0611-43bc-9d71-9cdac138f6e2'/> <backingStore/> </backingStore> <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='cdrom'> <driver cache='none'/> <target dev='hdc' bus='ide'/> <readonly/> <alias name='ide0-1-0'/> <address type='drive' controller='0' bus='1' target='0' unit='0'/> </disk> <controller type='usb' index='0' model='piix3-uhci'> <alias name='usb'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <controller type='pci' index='0' model='pci-root'> <alias name='pci.0'/> </controller> <controller type='ide' index='0'> <alias name='ide'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='06:6a:20:00:00:55'/> <source bridge='public'/> <target dev='vnet4'/> <model type='virtio'/> <driver queues='2'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <source path='/dev/pts/2'/> <target type='isa-serial' port='0'> <model name='isa-serial'/> </target> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/2'> <source path='/dev/pts/2'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> <input type='tablet' bus='usb'> <alias name='input0'/> <address type='usb' bus='0' port='1'/> </input> <input type='mouse' bus='ps2'> <alias name='input1'/> </input> <input type='keyboard' bus='ps2'> <alias name='input2'/> </input> <video> <model type='cirrus' vram='16384' heads='1' primary='yes'/> <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> Here is the qemu command on the destination host: LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm-spice -name guest=testuefi-VM,debug- threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-14 -testuefi-VM/master-key.aes -machine pc-i440fx-2.11,accel=kvm,usb=off ,dump-guest-core=off -cpu Skylake- Server,vmx=on,pcid=on,ssbd=on,hypervisor=on -drive file=/usr/share/OVMF/OVMF_CODE.fd,if=pflash,format=raw,unit=0,readonly=on -drive file=/var/lib/libvirt/qemu/nvram/testuefi- VM_VARS.fd,if=pflash,format=raw,unit=1 -m 1024 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid b340b117-1704-4ccf- 93a7-21303b12dd7f -smbios 'type=1,manufacturer=Apache Software Foundation,product=CloudStack KVM Hypervisor,uuid=b340b117-1704-4ccf- 93a7-21303b12dd7f' -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-14-testuefi- VM/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/var/lib/libvirt/images/testmigration.qcow2,format=qcow2,if=none,id =drive-virtio-disk0,cache=none -device virtio-blk- pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio- disk0,bootindex=2 -drive if=none,id=drive- ide0-1-0,readonly=on,cache=none -device ide-cd,bus=ide.1,unit=0,drive =drive-ide0-1-0,id=ide0-1-0,bootindex=1 -netdev tap,fd=35,id=hostnet0,vhost=on,vhostfd=37 -device virtio-net- pci,netdev=hostnet0,id=net0,mac=06:a0:66:00:00:0c,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa- serial,chardev=charserial0,id=serial0 -device usb- tablet,id=input0,bus=usb.0,port=1 -vnc vnc=unix:/var/run/qemu/b340b117-1704-4ccf-93a7-21303b12dd7f.sock -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 -incoming defer -msg timestamp=on Thanks, To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1817268/+subscriptions
