Episode 16 — LVM part 2: grow, extend, resize safely, and common failure patterns
Linux+ expects you to understand that “making storage bigger” is usually a sequence across layers, and LVM is where that sequence is most visible. This episode focuses on safe growth workflows: adding capacity to the pool, extending a logical volume, and then resizing the filesystem so the OS and applications can actually use the space. You’ll learn how to think about each step as a checkpoint with its own validation, which is exactly how PBQs are often framed—identify the correct order, confirm the current state, then make the smallest change that achieves the requirement. The episode reinforces why LVM is popular in production: it lets you evolve systems without rebuilding partitions every time workloads grow.
we walk through common failure patterns and how to reason about them without panic. You’ll practice diagnosing “LV extended but no free space appears,” which usually means the filesystem was not resized, and “VG has space but LV cannot grow,” which often indicates allocation constraints or incorrect target selection. We also cover mistakes that become exam traps, such as resizing the filesystem before extending the LV, extending the wrong LV because naming is unclear, or assuming changes persist when activation or boot-time discovery is misconfigured. Finally, we emphasize operational discipline: snapshot or backup strategy before risky changes, one change at a time, and post-change verification that includes mounts and reboot survivability, not just a single successful command output. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.
