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World of LVM: Part I
World of LVM: Part II

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Have you ever asked yourself any of these questions?

1. Why did I size this filesystem <randomsize> only?

2. Where the hell do I mount the new disk(s)?

3. Is there any way to dinamically increase this filesystem?

Then, LVM (Logical Volume Manager) may help you!

(Yay! I always wanted to begin an article with this crappy intro!)

Now, seriously speaking, LVM is one of the most useful tools for disk and volume management. It lets you increase/decrease partitions on the fly, use different physical disks, perform snapshot based backups and simpligy storage management in your servers.