January 2004
Intermediate to advanced
432 pages
11h 1m
English
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Disk-Resident Data Structures
We start our examination of LVM data structures with the layout of the physical volumes. Figure 11-4 shows us an overview of the LVM metadata structures on a physical volume. Bootable LVM disks are created with the pvcreate –B option and have a logical interchange format (LIF) file system header located in the first 8 KB of the disk.
The LIF header is actually an ancient file system type used by the HP-UX boot loader. In the case of a LVM disk, it is a simple directory structure containing pointers to boot files stored in the boot disk reserved area (BDRA) on bootable disks.
Following the boot block, we see the physical disk reserved area (PDRA). This structure contains the LVM record, which stores information about ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.