problem

A vm that has a local storage data disk cannot be migrated without specifying a specific host and results in the message below:

Migration failed.
Unable to find suitable destination to migrate VM i-2-6-VM

When selecting a specific host the same vm can be migrated.

This also affects maintenance mode as a host that has a vm with local storage datadisk present cannot migrate that vm, see #9887.

versions

CS 4.20 (build from 4.20 branch on commit 5444261)
Hypervisor kvm
Local storage and HA nfs
Advanced network setup on mbx mbxt-kvm-el8

The steps to reproduce the bug

1. Allow local storage on the zone
2. Create a vm with any root disk and a local datadisk
3. Migrate vm and select Automatically assign

OR

3. Set host.maintenance.local.storage.strategy to Migration
4. Set host with vm created in step 2 in maintenance mode

What to do about it?

No response