Re: [Qemu-devel] Migration from older Qemu to Qemu 2.0.0 does not work

[Stefan Priebe - Profihost AG]

Am 14.05.2014 10:11, schrieb Paolo Bonzini:
> Il 14/05/2014 09:17, Stefan Priebe - Profihost AG ha scritto:
>> i now was able to catch the error.
>>
>> It is:
>> Length mismatch: 0000:00:12.0/virtio-net-pci.rom: 40000 in != 10000
>> qemu: warning: error while loading state for instance 0x0 of device 'ram'
>> load of migration failed
> 
> This is a bug of your distribution.  The file sizes for ROMs should
> never change.  In particular, if you round the sizes up to the next
> power of 2 you should always have:
> 
> 128k for bios.bin
> 256k for bios-256k.bin
> 64k for pxe-*.rom
> 256k for efi-*.rom
> 64k for vgabios-*
> 
> Unfortunately, most distribution get pxe-*.rom sizes wrong, because at
> some point iPXE grew more features and didn't fit in 64k anymore with
> the default configuration.  I know at least Fedora does.
> 
> The solution is to copy the binaries from the QEMU git repository
> (directory pc-bios/) to /usr/share/qemu.

Hi,

i compile qemu on my own.

I have the rom files under /usr/share/kvm and they look like this:
ls -la /usr/share/kvm/*.rom
-rw-r--r-- 1 root root 173568 May 14 09:39 /usr/share/kvm/efi-e1000.rom
-rw-r--r-- 1 root root 174592 May 14 09:39 /usr/share/kvm/efi-eepro100.rom
-rw-r--r-- 1 root root 173056 May 14 09:39 /usr/share/kvm/efi-ne2k_pci.rom
-rw-r--r-- 1 root root 173056 May 14 09:39 /usr/share/kvm/efi-pcnet.rom
-rw-r--r-- 1 root root 176640 May 14 09:39 /usr/share/kvm/efi-rtl8139.rom
-rw-r--r-- 1 root root 171008 May 14 09:39 /usr/share/kvm/efi-virtio.rom
-rw-r--r-- 1 root root  67072 May 14 09:39 /usr/share/kvm/pxe-e1000.rom
-rw-r--r-- 1 root root  61440 May 14 09:39 /usr/share/kvm/pxe-eepro100.rom
-rw-r--r-- 1 root root  61440 May 14 09:39 /usr/share/kvm/pxe-ne2k_pci.rom
-rw-r--r-- 1 root root  61440 May 14 09:39 /usr/share/kvm/pxe-pcnet.rom
-rw-r--r-- 1 root root  61440 May 14 09:39 /usr/share/kvm/pxe-rtl8139.rom
-rw-r--r-- 1 root root  60416 May 14 09:39 /usr/share/kvm/pxe-virtio.rom

currently i don't know what's wrong.

Stefan