VM instance snapshot fails if "Quiesce Instance" snapshot parameter is true

[andrea-janna]

problem

When I try to take a VM instance snapshot setting "Quiesce Instance" to true the snapshot fails with the following error:
Failed to create vm snapshot: [VMSnapshot {"id":20,"name":"i-4-21-VM_VS_20260320122510","uuid":"e9760223-4c3e-4d79-b900-00b01c2f5884","vmId":21}] due to: can't handle quiescevm equal true for volume snapshot

The VM snapshot succeeds only if I disable the "Quiesce Instance" option.
But even if quiescence option is disabled I can see that inside the VM the guest agent fsfreeze and fsthaw hooks are called.

Mar 20 13:33:21 sonia qemu-ga[11874]: info: guest-fsfreeze called
Mar 20 13:33:23 sonia qemu-ga[11874]: info: guest-fsthaw called

So it seems that "Quiesce Instance" option is active anyway.

versions

CloudStack 4.22.0
KVM hypervisor
Ceph storage
Rocky Linux 10

The steps to reproduce the bug

1. select "Take Instance Snapshot" for a VM
2. set "Quiesce Instance" to true and press OK

What to do about it?

No response