Xen to XCP-NG

josef1909

Hi @olivierlambert ,
Please check script here or might suggest someone to collaborate:
https://github.com/josef-bocklage/xcp-ng_xen2xcpng-py3/blob/main/xen2xcpng-Vpy3.py

josef1909

Hi, I just wanted to check-in if someone was so kind and had a look.
Cheers,
Josef

olivierlambert

Hi!

We are pretty busy here (at Vates) about 8.2.1 new ISO and 8.3 release. We'll be happy that anyone around in the community is able to assist!

josef1909

@olivierlambert understand.
Please let me know if I can help trigger people to support on that.
It seems that this topic has already a little dust on it - so I am happy to collabortate.

In the meantime, I made some Tests and will provide the last lines from the debugging.

> /root/xen2xcpng3-V1.py(839)<module>()
-> if options.filename:
(Pdb) n
> /root/xen2xcpng3-V1.py(842)<module>()
-> machine.save_as(server=options.server, username=options.username,
(Pdb) n
> /root/xen2xcpng3-V1.py(843)<module>()
-> password=options.password, ssl= not options.nossl,  sparse=options.sparse, sftp=options.sftp)
(Pdb) n
> /root/xen2xcpng3-V1.py(842)<module>()
-> machine.save_as(server=options.server, username=options.username,
(Pdb) n
VM Details:
Name: JUSTANOTHERNAME
Type: Paravirtualised
VCPUS: 4
Memory(bytes): 2147483648
ACPI: true
APIC: true
PAE: true
NX: false
Viridian: true
Disk xvda(Bootable): /dev/vgxen/JUSTANOTHERNAME
Connecting to target XXX.XXX.XXX.157

Processing disk /dev/vgxen/JUSTANOTHERNAME(21474836480 bytes)
TypeError: initial_value must be str or None, not bytes
> /root/xen2xcpng3-V1.py(842)<module>()
-> machine.save_as(server=options.server, username=options.username,
(Pdb)

josef1909

Here are some more logs from todays session:

(Pdb) n
> /root/xen2xcpng3-V1.py(871)<module>()
-> machine.save_as(server=options.server, username=options.username,
(Pdb) w
  /usr/lib/python3.9/bdb.py(580)run()
-> exec(cmd, globals, locals)
  <string>(1)<module>()
> /root/xen2xcpng3-V1.py(871)<module>()
-> machine.save_as(server=options.server, username=options.username,
(Pdb) n
VM Details:
Name: JUSTANOTHERNAME
Type: Paravirtualised
VCPUS: 4
Memory(bytes): 2147483648
ACPI: true
APIC: true
PAE: true
NX: false
Viridian: true
Disk xvda(Bootable): /dev/vgxen/JUSTANOTHERNAME
Connecting to target xxx.xxx.xxx.157

Processing disk /dev/vgxen/JUSTANOTHERNAME(21474836480 bytes)
TypeError: initial_value must be str or None, not bytes
> /root/xen2xcpng3-V1.py(871)<module>()
-> machine.save_as(server=options.server, username=options.username,
(Pdb) w
  /usr/lib/python3.9/bdb.py(580)run()
-> exec(cmd, globals, locals)
  <string>(1)<module>()
> /root/xen2xcpng3-V1.py(871)<module>()
-> machine.save_as(server=options.server, username=options.username,
  /root/xen2xcpng3-V1.py(617)save_as()
-> string = io.StringIO(input_buffer)
(Pdb) n
--Return--
> /root/xen2xcpng3-V1.py(871)<module>()->None
-> machine.save_as(server=options.server, username=options.username,
(Pdb) w
  /usr/lib/python3.9/bdb.py(580)run()
-> exec(cmd, globals, locals)
  <string>(1)<module>()->None
> /root/xen2xcpng3-V1.py(871)<module>()->None
-> machine.save_as(server=options.server, username=options.username,
(Pdb) n
TypeError: initial_value must be str or None, not bytes
> <string>(1)<module>()->None
(Pdb) w
  /usr/lib/python3.9/bdb.py(580)run()
-> exec(cmd, globals, locals)
> <string>(1)<module>()->None
  /root/xen2xcpng3-V1.py(871)<module>()->None
-> machine.save_as(server=options.server, username=options.username,
  /root/xen2xcpng3-V1.py(617)save_as()
-> string = io.StringIO(input_buffer)
(Pdb) n
--Return--
> <string>(1)<module>()->None
(Pdb) w
  /usr/lib/python3.9/bdb.py(580)run()
-> exec(cmd, globals, locals)
> <string>(1)<module>()->None
(Pdb) n
Traceback (most recent call last):
  File "/usr/lib/python3.9/pdb.py", line 1723, in main
    pdb._runscript(mainpyfile)
  File "/usr/lib/python3.9/pdb.py", line 1583, in _runscript
    self.run(statement)
  File "/usr/lib/python3.9/bdb.py", line 580, in run
    exec(cmd, globals, locals)
  File "<string>", line 1, in <module>
  File "/root/xen2xcpng3-V1.py", line 871, in <module>
    machine.save_as(server=options.server, username=options.username,
  File "/root/xen2xcpng3-V1.py", line 617, in save_as
    string = io.StringIO(input_buffer)
TypeError: initial_value must be str or None, not bytes
Uncaught exception. Entering post mortem debugging
Running 'cont' or 'step' will restart the program
> /root/xen2xcpng3-V1.py(617)save_as()
-> string = io.StringIO(input_buffer)
(Pdb) q
Post mortem debugger finished. The /root/xen2xcpng3-V1.py will be restarted
> /root/xen2xcpng3-V1.py(13)<module>()

olivierlambert

I know @yann is very busy but if he can, he'll take a look

josef1909

@olivierlambert @yann
I understand that there is a big GoLive on your side.
Do we have alternative suggestions to migrate from xen to xcp-ng?

olivierlambert

The other alternative, if a bit cumbersome, is to use Clonezilla, like a P2V situation

andrewperry

I also worked on trying to update the script to python3 last week and hadn't realised you had this work here so was starting from scratch.

I am not a python developer so when I got to errors in the section that is actually streaming the files I decided to stop and just finish 'making' python2.7 on the servers that I need to get the VMs off and that has worked for me.

It doesn't seem like it should be a huge amount of work left to upgrade the script to python3 but probably not something I have the skills or time for right now.

Thanks for sharing your efforts here. What have you ended up doing @josef1909

olivierlambert

Thanks for re-pinging. This might be a "simple" mission to finance to a Python specialist. Let me add @AtaxyaNetwork in the loop.