Re: [Qemu-devel] [PULL 22/62] block: Support Archipelago as a QEMU block backend

[Chrysostomos Nanakos <chris@include.gr>]

On 2015-04-09 06:48, Andreas Färber wrote:
> Am 08.08.2014 um 19:39 schrieb Kevin Wolf:
>> From: Chrysostomos Nanakos <cnanakos@grnet.gr>
>>
>> VM Image on Archipelago volume is specified like this:
>>
>> 
>> file.driver=archipelago,file.volume=<volumename>[,file.mport=<mapperd_port>[,
>> file.vport=<vlmcd_port>][,file.segment=<segment_name>]]
>>
>> 'archipelago' is the protocol.
>>
>> 'mport' is the port number on which mapperd is listening. This is 
>> optional
>> and if not specified, QEMU will make Archipelago to use the default 
>> port.
>>
>> 'vport' is the port number on which vlmcd is listening. This is 
>> optional
>> and if not specified, QEMU will make Archipelago to use the default 
>> port.
>>
>> 'segment' is the name of the shared memory segment Archipelago stack 
>> is using.
>> This is optional and if not specified, QEMU will make Archipelago to 
>> use the
>> default value, 'archipelago'.
>>
>> Examples:
>>
>> file.driver=archipelago,file.volume=my_vm_volume
>> file.driver=archipelago,file.volume=my_vm_volume,file.mport=123
>> file.driver=archipelago,file.volume=my_vm_volume,file.mport=123,
>> file.vport=1234
>> file.driver=archipelago,file.volume=my_vm_volume,file.mport=123,
>> file.vport=1234,file.segment=my_segment
>>
>> Signed-off-by: Chrysostomos Nanakos <cnanakos@grnet.gr>
>> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
>> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
>> ---
>>  MAINTAINERS         |   6 +
>>  block/Makefile.objs |   2 +
>>  block/archipelago.c | 787 
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++
>>  configure           |  40 +++
>>  4 files changed, 835 insertions(+)
>>  create mode 100644 block/archipelago.c
>
> Judging by configure output in v2.3.0-rc2, QEMU seems to rely on
> libxseg, which is GPL-3.0+: https://github.com/grnet/libxseg
>
> How can anyone legally build this backend then? o.O
>
> Any chance libxseg can be relicensed to GPL-2.0+?
>

Hello Andreas,
indeed the license has changed a few months after submitting the patch 
for the block driver to QEMU. I have already contacted the 
administration
of GRNET which is responsible for this change asking them about the 
aforementioned problem. I am waiting for the reply and hopefully we will 
resolve this license matter.

Regards,
Chrysostomos.