@olivierlambert
Simpler setup on my side:
Pool 1 - 1 x ASRock Rack 1U4LW-X570/2L2T RPSU with about 10 VMs
Pool 2 - 1 x HP DL360 Gen9 with only the XO VM (Debian 11).
Each host has 2 x 10 Gb NIC in use (one for VMs/MGMT, the other one for NFS storage).
The storage is a NFS share on a QNAP NAS (except for the XO VM which is on the local storage of the DL360 host).
The 2 hosts and the NFS storage are connected on the same10Gbit Ubiquiti EdgeSwitch.
Same plugins as @14wkinnersley + audit and sdn-controller.
The issue with stuck task is only appearing on the pool 1, not on the pool 2 with only the XO VM.