Transfer speed - migration speed

[Marek]

Hi there, i would like to ask you how to configure transer speed of VM migration between hosts in claster.

I have for e.g. 2 hosts in claster and i want to migrate VM between them - when i try to do it, it copy VHD with full speed and this is big issue for me so i am looking for way to control it.

I was looking for it a while already and datacenter.cfg entry that controls Cstream is not working on transfer speed. It works when i restore backup - thats fine but i am looking for this specific way to lower transfer speed of VM migration. Can be anything - disk read or network speed blockade.

Please let me know how - if possible - i can control data stream.

 

[tom]

please check:

> man datacenter.cfg

 

[Marek]

Hey i know it - it works only with restore from backup - doesnt affect migration speed at all.

 

[tom]

pls post your:

> cat /etc/pve/datacenter.cfg

 

[Marek]

Here you go:

keyboard: pl

migration: insecure,network=192.168.30.0/24

bwlimit: clone=10000,default=30000,migration=30000,move=10000,restore=50000

 

[Marek]

Hey - any ideas what to do with that? Maybe it will be fixed with new patches? Can you confirm please?

 

[Marek]

Hi guys anything new regarding that? This is big issue for my company - let me know please.

 

[AlexLup]

Easiest thing for you is to buy 2x Mellanox 10gb (or other NICs I guess) cards at €50/each and hook them together. Then use that network connection as your migration network like so:

vi /etc/pve/datacenter.cfg

# use dedicated migration network
migration: insecure,network=172.16.1.0/24


Src: https://pve.proxmox.com/wiki/Cluster_Manager#_cluster_network