Chapter 11. The Logical Volume Manager

   

When is a device not a device? When it is a pseudo-device!

In the logical volume manager (LVM) we see yet another type of abstraction layer. HP-UX builds file systems, allocates swap space, and allows raw data storage on disk volumes. The LVM subsystem allows the administrator to create logical volumes from the pooled space of physical volumes. Once a logical volume has been configured, it may be used in the same manner as a physical volume. Logical volume management gives the administrator a great deal of control over the size of individual file systems, swap, and raw space. In this chapter, we examine the underlying disk- and kernel-resident metadata structures used by LVM.



HP-UX 11i Internals
HP-UX 11i Internals
ISBN: 0130328618
EAN: 2147483647
Year: 2006
Pages: 167

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