The pct rescan && qm rescan command in Proxmox Virtual Environment (PVE) is used to refresh the available storage resources and detect any newly added storage devices within LXC containers and KVM virtual machines.
The purpose of this command is to ensure that PVE recognizes any changes made to the storage devices and updates its list of available storage resources accordingly. This is particularly useful after adding new storage devices, modifying existing ones, or performing other storage-related tasks.
Running this command instructs PVE to rescan for any new storage devices or changes to existing ones. It helps to manage storage resources in LXC containers and KVM virtual machines by ensuring that any changes made to storage devices are detected and can be accessed by the containers or virtual machines.
It is necessary to run this command whenever you make any changes to storage devices or add new ones to your PVE environment. Otherwise, PVE may not detect the changes, and the storage devices may not be available to your containers or virtual machines.
Before running this command, you should ensure that any storage devices you have added or modified are properly configured and mounted in PVE. You should also ensure that all data on the storage devices is backed up, as running the rescan command could potentially cause data loss if any errors occur during the process.
In summary, pct rescan && qm rescan is an important command in PVE for managing storage resources in LXC containers and KVM virtual machines. It helps to ensure that any changes made to storage devices are properly recognized by PVE and can be accessed by the containers or virtual machines.