Tunable Kernel Parameters
Table Of Contents
- Tunable Kernel Parameters
- Legal Notices
- Revision History
- Conventions
- 1 Overview
- 2 Accounting Subsystem
- 3 Asynchronous I/O Subsystem
- 4 File System Subsystem
- 5 Interprocess Communication (IPC) Subsystem
- 6 Kernel Crash Dump Subsystem
- 7 Memory Paging Subsystem
- 8 Process Management Subsystem
- 9 Spinlock Pool
- 10 Streams Subsystem
- 11 Miscellaneous Parameters
- Miscellaneous Parameter Summary
- CD-ROM Parameter Summary
- System Clock Parameter Summary
- Disk I/O Parameter Summary
- Intrusion Detection System/9000
- Fast Symbolic Link Traversal Parameter Summary
- Reserved System Memory Parameter Summary
- Network Parameter Summary
- Queued Signals Parameter Summary
- Real-Time Priority Parameter Summary
- Terminal Parameter Summary
- Maximum Users Parameter Summary
- Web Server Parameter Summary
- Miscellaneous Parameter Summary
- A Table of Tunable Kernel Parameters
File System Subsystem
Logical Volume Manager (LVM) Operation
Chapter 4
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Logical Volume Manager (LVM) Operation
Logical Volume Manager (LVM) is a subsystem for managing file systems and disk
storage space that are structured into logical volumes rather than being restricted to the
beginning and end points of a physical disk. Logical volumes can be smaller than the
disk or disk array on which they reside, or they can include all or part of several disks or
disk arrays. Logical volume boundaries are not required to coincide with the boundaries
of physical disks when multiple disks or arrays are used.
Managing logical volumes is done by the Logical Volume Manager, not the kernel.
However, the kernel contains data structures for each volume group on the system, and
the space reserved for LVM data structures must be sufficient to support the number of
volume groups that exist on the system. This is done with the maxvgs kernel
configuration parameter.
Additional Information
• “Logical Volume Manager (LVM) Parameter Summary” on page 25