qm rescan

Rescan all storages and update disk sizes and unused disk images of a virtual machine. More information: https://pve.proxmox.com/pve-docs/qm.1.html.

• Rescan all storages and update disk sizes and unused disk images of a specific virtual machine:

qm rescan vm_id

• Perform a dry-run of rescan on a specific virtual machine and do not write any changes to configurations:

qm rescan --dryrun true vm_id