Transferring a Linux container (LXC) from an external storage device to the primary system storage involves copying the container’s configuration and root filesystem to the local system, then reconfiguring it to operate in the new environment. This is often accomplished using tools like `lxc copy` or by manually copying the relevant files and directories. For instance, one might copy a container named “my-container” from an external drive mounted at “/mnt/external” to the local LXC path with a command similar to `lxc copy /mnt/external/my-container local:`. Subsequently, adjustments to the container’s configuration, such as network settings, may be necessary.
Relocating containers locally often results in significantly improved performance due to the higher read and write speeds of internal storage compared to external drives, particularly USB drives or network-attached storage. This is crucial for applications running within the container that demand rapid access to data. Historically, managing containers on external devices provided flexibility, particularly when dealing with limited local disk space. However, with increasing storage capacities and the prevalence of faster interfaces like NVMe, local storage has become the preferred environment for running performance-sensitive containerized applications.
