Snapshots of KVM retain VM configurations.
VM configurations include disk resource configurations (*).
When performing restoration operations for snapshots, if the number of disk resources in the information of the snapshot and the number of disk resources of the L-Server used for restoration are different, the number of disk resources after the snapshot is restored will change.
* Note: This means the following. The number, types, and file paths of qcow2 image files that are disk resources created from virtual storage. The number, types, and file paths of raw devices or partitions that are disk resources created in advance.
Perform corrective action accordingly on VM hosts.
Example
For the connection method when allocating them to a VM guest, refer to the RedHat manual.
For details, refer to the following chapter in the "Red Hat Enterprise Linux 6 Virtualization Administration Guide".
Chapter 14. Managing guest virtual machines with virsh
URL: https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Administration_Guide/index.html