migration stalls

[IIEP_IT]

Greetings,

Since moving to PVE 9.x (now using 9.1.1) from 8.x, live migrations would sometimes stall.
The logs show:

2026-01-06 10:19:29 conntrack state migration not supported or disabled, active connections might get dropped
2026-01-06 10:19:30 use dedicated network address for sending migration traffic (172.25.250.239)
2026-01-06 10:19:30 starting migration of VM 158 to node 'iep-pve-05' (172.25.250.239)
2026-01-06 10:19:30 starting VM 158 on remote node 'iep-pve-05'
2026-01-06 10:19:40 start remote tunnel
2026-01-06 10:19:42 ssh tunnel ver 1
2026-01-06 10:19:42 starting online/live migration on unix:/run/qemu-server/158.migrate
2026-01-06 10:19:42 set migration capabilities
2026-01-06 10:19:42 migration downtime limit: 100 ms
2026-01-06 10:19:42 migration cachesize: 4.0 GiB
2026-01-06 10:19:42 set migration parameters
2026-01-06 10:19:42 start migrate command to unix:/run/qemu-server/158.migrate
2026-01-06 10:19:43 migration active, transferred 2.0 MiB of 32.0 GiB VM-state, 0.0 B/s

and then it no longer progresses.

I do not understand either why it says conntrack state migration not supported or disabled.

We use a dedicated subnet for migration traffic with secure=true.

Any ideas what could be going on?

Thanks,
Franz STREBEL

 

[Magnus-mercer]

Try updating the node or manually placing the node in maintenance mode before restarting.

R

Thread 'Proxmox 9.1.2 HA migration issues when rebooting node.'

Dec 16, 2025

When rebooting a node in order to install update, the node goes into maintenance and tries to live migrate the vm's.
However is hangs with the following error:

task started by HA resource agent

2025-12-15 23:53:05 conntrack state migration not supported or disabled, active connections might get dropped
2025-12-15 23:53:05 ERROR: migration aborted (duration 00:00:00): org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network...

• randymartin
• Replies: 8
• Forum: Proxmox VE: Installation and configuration