Hi Mathieu, How big is your testuefi-VM_VARS.fd file ? Does the problem go away if you pad it to 1MB?
I've seen a problem migrating pflash where the files aren't 1MB (?) multiples but only using the 'old style' block migration; normally you get an NBD based block migration but when you select tunneling libvirt can't tunnel the nbd stream so falls back to the old style migration and hits this bug. -- 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
