Linux Today: Linux News On Internet Time.

Resizing Linux partitions, Part 2: Advanced resizing

Sep 26, 2010, 03:04 (0 Talkback[s])
(Other stories by Roderick W. Smith)

"Simple partition resizing operations, such as those described in Part 1 of this series, usually conclude successfully. Sometimes, though, you need to do something different or troubleshoot problems. This article covers some of these situations. The first topic is LVM configuration and how it interacts with partition resizing. The second topic is troubleshooting techniques. Although a complete description of all the problems that can occur when resizing partitions might fill a book, a few basic principles can help you work through many common problems. Finally, this article describes some alternatives to partition resizing, should the problems you encounter prove insurmountable.

"Resizing LVMs

"LVM is a disk allocation technique that supplements or replaces traditional partitions. In an LVM configuration, one or more partitions, or occasionally entire disks, are assigned as physical volumes in a volume group, which in turn is broken down into logical volumes. File systems are then created on logical volumes, which are treated much like partitions in a conventional configuration. This approach to disk allocation adds complexity, but the benefit is flexibility. An LVM configuration makes it possible to combine disk space from several small disks into one big logical volume. More important for the topic of partition resizing, logical volumes can be created, deleted, and resized much like files on a file system; you needn't be concerned with partition start points, only with their absolute size.

"Note: I don't attempt to describe how to set up an LVM in this article. If you don't already use an LVM configuration, you can convert your system to use one, but you should consult other documentation, such as the Linux LVM HOWTO (see Resources), to learn how to do so."

Complete Story

Related Stories: