[PVE-User] Slow live migration in Proxmox 5

[Sten Aus]

Hi

Has anyone seen migration speed drop when upgrading from Proxmox 4 to 
Proxmox 5?

I have seen at least one poor network performance issue in Proxmox 
Forums 
(https://forum.proxmox.com/threads/pve-5-2-netlink-ovs-vswitchd-attribute-type-5-has-an-invalid-length.44039/#post-224515).


I have one small cluster (2 nodes) with 1x10Gbit network each and I get 
migration speeds 30-40MB/s. In Proxmox 4 I got 100+MB/s, which is more 
sensible for 10Gbps. I am using openvswitch. Cluster has it's own 
network for multicast and migration.

I have replaced "migartion_unsecure: 1" with "migration: type=insecure" 
in datacenter.cfg, but this seems to have no effect. There's always 
lines in migration log: "ssh tunnel ver 1".

Only if I add both of them to datacenter.cfg I will get log saying:
"deprecated setting 'migration_unsecure' and new 'migration: type' set 
at same time! Ignore 'migration_unsecure'"


But if I remove both lines (old deprecated one and new one) I will get 
bigger speeds:
2018-10-09 11:07:24 migration speed: 136.53 MB/s - downtime 49 ms
Which is weird.


Not sure if I can update bigger cluster to Proxmox 5 now.

Has anyone else seen this?


All the best
Sten


---

# pveversion -v
proxmox-ve: 5.2-2 (running kernel: 4.15.18-5-pve)
pve-manager: 5.2-9 (running version: 5.2-9/4b30e8f9)
pve-kernel-4.15: 5.2-8
pve-kernel-4.15.18-5-pve: 4.15.18-24
pve-kernel-4.4.134-1-pve: 4.4.134-112
pve-kernel-4.4.67-1-pve: 4.4.67-92
pve-kernel-4.4.62-1-pve: 4.4.62-88
pve-kernel-4.4.49-1-pve: 4.4.49-86
pve-kernel-4.4.19-1-pve: 4.4.19-66
pve-kernel-4.4.8-1-pve: 4.4.8-52
pve-kernel-2.6.32-47-pve: 2.6.32-179
pve-kernel-2.6.32-46-pve: 2.6.32-177
pve-kernel-2.6.32-42-pve: 2.6.32-165
ceph: 11.2.1-1~bpo90+1
corosync: 2.4.2-pve5
criu: 2.11.1-1~bpo90
glusterfs-client: 3.8.8-1
ksm-control-daemon: 1.2-2
libjs-extjs: 6.0.1-2
libpve-access-control: 5.0-8
libpve-apiclient-perl: 2.0-5
libpve-common-perl: 5.0-40
libpve-guest-common-perl: 2.0-18
libpve-http-server-perl: 2.0-11
libpve-storage-perl: 5.0-29
libqb0: 1.0.1-1
lvm2: 2.02.168-pve6
lxc-pve: 3.0.2+pve1-2
lxcfs: 3.0.2-2
novnc-pve: 1.0.0-2
openvswitch-switch: 2.7.0-3
proxmox-widget-toolkit: 1.0-20
pve-cluster: 5.0-30
pve-container: 2.0-27
pve-docs: 5.2-8
pve-firewall: 3.0-14
pve-firmware: 2.0-5
pve-ha-manager: 2.0-5
pve-i18n: 1.0-6
pve-libspice-server1: 0.12.8-3
pve-qemu-kvm: 2.11.2-1
pve-xtermjs: 1.0-5
qemu-server: 5.0-36
smartmontools: 6.5+svn4324-1
spiceterm: 3.0-5
vncterm: 1.5-3