Logical Volume Manager

etcetera

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LVM is cool. Basically it's a tool to manage when you have a lot of disks, or need a lot of space, or need to grow a filesystem dynamically. I used non-Linux versions of LVM before and Linux did a really good job of expanding the original LVM and adding new concepts and features to it.

You can pool 2-3 disks into one "Volume Group" then carve our "Logical Volumes" which can stripe across disks if more space is needed when a single disk can't offer that. It can also do RAID. It's mostly used in production when dealing with huge partitions and log files and such.



 

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