Sean’s Obsessions

Sean Walberg’s blog

Snapshots and LVM

I’ve been looking for some instructions on how to do snapshots on my machine. I did some research a while ago, and found several partial explanations, some of them contradictory.

goes through the whole process. He’s using XFS as the file system, so there is an extra step to freeze it. I suppose with ext2 you could remout as RO, but I thought the whole point of snapshots was to do this stuff hot!

Snapshots are a way to freeze your hard drive at a moment in time, usually for backup purposes. You basically end up with a read-only version of your hard drive on a separate device that you can back up, while the original version can tinker along.


I’m trying something new here. Talk to me on Twitter with the button above, please.