If you're switching disks while the machine is running, the LVM bits might not be detected when the disk is added. Here's a couple of commands you can use to rescan for the device, and then activate it manually. If your device is /dev/sdc, then run: lvmdevices --adddev /dev/sdc Now you can| Ian's notes
In this post, I explain how to create and share a LVM logical volume over the network via NFS. One of the reasons I use this approach is to provide more storage capacity to existing nodes without h…| Technical Scratchpad
Post is a note to self describing LVM shrink and resize of partition| Random Ramblings
There have been a few posts asking about moving a Linux file system from a raw partition onto an LVM. The advantages to using LVMs are numerous, but the advice has generally been to reinstall from scratch.| and1equals1.blogspot.com
During the bi-yearly review of my setup, I realized I was running a Linux machine without full disk encryption. The encryption of the disk needed to be done ASAP, but I was not willing to reinstall the whole operating system to achieve that.| Michele Bologna
Since at least v1.0.0 Petitboot has used device-mapper snapshots to avoid| sthbrx.github.io
LVM allows to have a caching layer, where your actual LV resides on spinning (slow) disks and you have a caching layer in a secondary LV, that caches some of your most frequent reads and the writes. From an end-user perspective the details are transparent: one single blockdevice. For a good overview and introduction see the following blog post: Using LVM cache for storage tiering| tech.immerda.ch