Red Hat ENTERPRISE LINUX 5 - LOGICAL VOLUME MANAGER ADMINISTRATION Handbücher

Bedienungsanleitungen und Benutzerhandbücher für Software Red Hat ENTERPRISE LINUX 5 - LOGICAL VOLUME MANAGER ADMINISTRATION.
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Inhaltsverzeichnis

Table of Contents

4

1. About This Guide

7

2. Audience

7

3. Software Versions

7

4. Related Documentation

7

5. Document Conventions

8

Important

9

1. Logical Volumes

10

2. LVM Architecture Overview

11

3. Running LVM in a Cluster

12

4. Document Overview

13

Chapter 2. LVM Components

15

2. Volume Groups

17

3. LVM Logical Volumes

17

Figure 2.2. Extent Mapping

18

3.2. Striped Logical Volumes

20

3.3. Mirrored Logical Volumes

21

3.4. Snapshot Volumes

22

Chapter 3. LVM Administration

24

Overview

24

4. Logical Volume Backup

25

5. Logging

25

• external log function

26

LVM Configuration Files

26

CLI Commands

27

3.1. Creating Volume Groups

31

3.3. Displaying Volume Groups

32

3.8. Removing Volume Groups

35

3.9. Splitting a Volume Group

35

3.10. Combining Volume Groups

35

3.12. Renaming a Volume Group

36

4.1. Creating Logical Volumes

37

4.3. Resizing Logical Volumes

41

4.5. Renaming Logical Volumes

42

4.6. Removing Logical Volumes

42

4.8. Growing Logical Volumes

43

5. Creating Snapshot Volumes

46

7. Online Data Relocation

48

Nodes in a Cluster

48

9.1. Format Control

49

9.2. Object Selection

51

Table 4.1. pvs Display Fields

52

The vgs Command

53

The lvs Command

54

Table 4.3. lvs Display Fields

56

9.3. Sorting LVM Reports

57

9.4. Specifying Units

58

Chapter 5. LVM Configuration

60

Examples

60

1.4. Creating the File System

61

3. Splitting a Volume Group

62

3.1. Determining Free Space

63

3.2. Moving the Data

63

4.2.3. Moving the Data

66

Volume Group

73

Appendix A. The Device Mapper

76

Appendix B. The LVM

77

Configuration Files

77

2. Sample lvm.conf File

78

Appendix C. LVM Object Tags

84

Appendix D. LVM Volume Group

86

Metadata

86

3. Sample Metadata

87





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