Red Hat CLUSTER SUITE 4.7 - CLUSTER LVM ADMINISTRATORS, Руководство пользователя

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iii
Introduction vii
1. Audience ....................................................................................................................... vii
2. Software Versions .......................................................................................................... vii
3. Related Documentation .................................................................................................. vii
4. Document Conventions ................................................................................................. viii
4.1. Typographic Conventions .................................................................................... viii
4.2. Pull-quote Conventions ......................................................................................... x
4.3. Notes and Warnings ............................................................................................. x
5. Feedback ....................................................................................................................... xi
1. The LVM Logical Volume Manager 1
1.1. Logical Volumes ........................................................................................................... 1
1.2. LVM Architecture Overview ........................................................................................... 2
1.3. Running LVM in a Cluster ............................................................................................. 3
1.4. Document Overview ..................................................................................................... 4
2. LVM Components 5
2.1. Physical Volumes ......................................................................................................... 5
2.1.1. LVM Physical Volume Layout ............................................................................. 5
2.1.2. Multiple Partitions on a Disk ............................................................................... 6
2.2. Volume Groups ............................................................................................................ 6
2.3. LVM Logical Volumes ................................................................................................... 7
2.3.1. Linear Volumes ................................................................................................. 7
2.3.2. Striped Logical Volumes .................................................................................... 8
2.3.3. Mirrored Logical Volumes ................................................................................... 9
2.3.4. Snapshot Volumes ........................................................................................... 10
3. LVM Administration Overview 13
3.1. Creating LVM Volumes in a Cluster ............................................................................. 13
3.2. Logical Volume Creation Overview .............................................................................. 13
3.3. Growing a File System on a Logical Volume ................................................................ 14
3.4. Logical Volume Backup .............................................................................................. 14
3.5. Logging ...................................................................................................................... 14
4. LVM Administration with CLI Commands 15
4.1. Using CLI Commands ................................................................................................ 15
4.2. Physical Volume Administration ................................................................................... 16
4.2.1. Creating Physical Volumes ............................................................................... 17
4.2.2. Displaying Physical Volumes ............................................................................ 18
4.2.3. Preventing Allocation on a Physical Volume ...................................................... 19
4.2.4. Resizing a Physical Volume ............................................................................. 19
4.2.5. Removing Physical Volumes ............................................................................ 19
4.3. Volume Group Administration ...................................................................................... 19
4.3.1. Creating Volume Groups .................................................................................. 20
4.3.2. Adding Physical Volumes to a Volume Group .................................................... 21
4.3.3. Displaying Volume Groups ............................................................................... 21
4.3.4. Scanning Disks for Volume Groups to Build the Cache File ................................ 22
4.3.5. Removing Physical Volumes from a Volume Group ............................................ 22
4.3.6. Changing the Parameters of a Volume Group .................................................... 23
4.3.7. Activating and Deactivating Volume Groups ...................................................... 23
4.3.8. Removing Volume Groups ................................................................................ 24
4.3.9. Splitting a Volume Group ................................................................................. 24
4.3.10. Combining Volume Groups ............................................................................. 24