Red Hat ENTERPRISE LINUX 5 - LOGICAL VOLUME MANAGER ADMINISTRATION Guida di Installazione Pagina 89
- Pagina / 92
- Indice
- SEGNALIBRI
- 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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