[Qemu-devel] [Bug 1723161] Re: Migration failing in qemu-2.10.1 but working qemu-2.9.1 and earlier with same options

[Dr. David Alan Gilbert]

Interesting; As a test could you try removing the cdrom entry (I doubt that'll 
help but it's worth a go).
Also, is it possible for you to try a bisection?

If I was to guess, I'd bet it's something relating to the pflash, but I
don't know; it's unfortunate the block migration doesn't say what it got
upset by.

Are there no errors on the source side?

Assuming there are no errors on the source side, I'd have to suggest
taking a printf to migration/block.c block_load to find out which exit
it's falling out of in there (at least I think that's what would cause
that error)

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https://bugs.launchpad.net/bugs/1723161

Title:
  Migration failing in qemu-2.10.1 but working qemu-2.9.1 and earlier
  with same options

Status in QEMU:
  New

Bug description:
  
  Qemu-2.10.1 migration failing with the following error:
  Receiving block device images
  qemu-system-x86_64: error while loading section id 2(block)
  qemu-system-x86_64: load of migration failed: Input/output error

  Migration is setup on the destination system of the migration using:
  -incoming tcp:0:4444

  Migration is initiated from the source using the following commands in its 
qemu monitor:
  migrate -b "tcp:localhost:4444"

  The command-line used in both the source and destination is:
  qemu-system-x86_64 \
          -nodefaults \
          -pidfile vm0.pid \
          -enable-kvm \
          -machine q35 \
          -cpu host -smp 2 \
          -m 4096M \
          -drive if=pflash,format=raw,unit=0,file=OVMF_CODE.fd,readonly \
          -drive if=pflash,format=raw,unit=1,file=OVMF_VARS.fd \
          -drive file=${HDRIVE},format=qcow2 \
          -drive media=cdrom \
          -usb -device usb-tablet \
          -vga std -vnc :0 \
          -net nic,macaddr=${TAPMACADDR} -net 
user,net=192.168.2.0/24,dhcpstart=192.168.2.10 \
          -serial stdio \
          -monitor unix:${MONITORSOCKET},server,nowait

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