Unable to migrate VM between new host and older hosts , running same versions

[hmadra]

ISSUE TYPE

• Bug Report

COMPONENT NAME

 Agent , KVM

CLOUDSTACK VERSION

4.18.1 , 4.18.2

CONFIGURATION

OS / ENVIRONMENT

AlmaLinux 9.3 - 9.4

SUMMARY

I'm running 10 Host Almalinux 9.3 Cluster witout issues.
However , on adding a new host , I cannot migrate an VM away from the new host.
I can Migrate to the new host , but not away from it.

All Machines are 100% identical , running same libvirt 9.5

Here is the Log I Get

2024-10-04 00:06:51,927 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-2:null) (logid:50b23ae4) This host utilizes cgroupv2 (as the max shares value is [145600]), thus, the VM requested shares of [4000] will be converted to consider the host limits; the new CPU shares value is [275].
2024-10-04 00:06:51,931 INFO [resource.wrapper.LibvirtMigrateCommandWrapper] (agentRequest-Handler-2:null) (logid:50b23ae4) VM [i-2-76-VM] will have CPU shares altered from [4000] to [0] as part of migration because the cgroups version differs between hosts.

All Nodes have cgroup2

grep cgroup /proc/filesystems
nodev cgroup
nodev cgroup2

EXPECTED RESULTS

Should be able to migrate between hosts without issues.

ACTUAL RESULTS

Unable to migrate VMs

[weizhouapache]

@hmadra
what's the output of command stat -fc %T /sys/fs/cgroup/ ?

also, what's the error message in agent.log on source host ?

[abh1sar]

Hi @hmadra
Any update on this?

@hmadra what's the output of command stat -fc %T /sys/fs/cgroup/ ?

also, what's the error message in agent.log on source host ?