BVLog Bryan Voss’ mental synchronization point

28Jun/070

Linux sysadmin tip #1: LVM

There's no excuse for not using logical volumes when setting up a Linux system anymore. All the major distros support LVM. All the major rescue disks support it. The benefits of LVM are too great to ignore. You set up a volume group containing all your disks, then create logical volumes on top of that. The logical volumes can be expanded when necessary until the volume group is filled. When that happens, just add another disk and expand the volume group across it. You can then continue expanding the logical volumes as needed. Logical volumes work on top of RAID arrays and SAN LUNs, as well.

About the only thing better is Solaris' ZFS, which I've just begun experimenting with recently. But that's a topic for another post...

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