logical volume manager

ZFS is ready for your Linux desktop

Apr 102013

As first thing a small lesson about what’s ZFS:

ZFS is a combined file system and logical volume manager designed by Sun Microsystems. The features of ZFS include protection against data corruption, support for high storage capacities, integration of the concepts of filesystem and volume management, snapshots and copy-on-write clones, continuous integrity checking and automatic repair, RAID-Z and native NFSv4 ACLs. ZFS is implemented as open-source software, licensed under the Common Development and Distribution License (CDDL). The ZFS name was registered as a trademark of Oracle until September 20, 2011

And now after more than two years in the experimental stage, the ZFS file system for Linux is ready for widespread use.
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Playing with LVM, on any existing disk.

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May 272011

I’ve found these useful examples about LVM, Article By Roger Hosto

Let’s start with what LVM is; in short it’s away to manage disk volumes in more of a user friendly way, whether they are whole hard disk, disk partitions, or SAN disk. Logical Volume Manager gives the Administrator much more flexibility in allocating, re-sizing, and moving storage around. With that being said, the greatest advantage is having the ability to add additional disk space with relative ease, which with Moore’s Law and Kryder’s Law [1] floating around makes life a little easier on your System Administrator.

Now that you are all interested in using LVM, let’s bust out a new hard-drive or re-partition our hard-disk and have at it. Woo! Hang on a minute! That sounds like a pain just to play around with something. That’s what I thought too, so here is a way to use your existing partitions using loop devices and empty disk images to play around with and get use to the commands.

I have personally tested this on RHEL 4 and 5, but I don’t see why this couldn’t be done on any current version of Linux.