Red Hat GLOBAL FILE SYSTEM 5.0, Administrator'S Manual

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Introduction ............................................................................................................... ix
1. About This Guide ........................................................................................... ix
2. Audience ....................................................................................................... ix
3. Software Versions .......................................................................................... ix
4. Related Documentation .................................................................................. ix
5. Document Conventions ...................................................................................x
6. Feedback ...................................................................................................... xi
1. The LVM Logical Volume Manager .......................................................................... 1
1. Logical Volumes ............................................................................................ 1
2. LVM Architecture Overview ............................................................................ 2
3. Running LVM in a Cluster ............................................................................... 3
4. Document Overview ....................................................................................... 5
2. LVM Components .................................................................................................. 7
1. Physical Volumes ........................................................................................... 7
1.1. LVM Physical Volume Layout ............................................................... 7
1.2. Multiple Partitions on a Disk ................................................................. 8
2. Volume Groups .............................................................................................. 9
3. LVM Logical Volumes ..................................................................................... 9
3.1. Linear Volumes ................................................................................... 9
3.2. Striped Logical Volumes .....................................................................12
3.3. Mirrored Logical Volumes ...................................................................13
3.4. Snapshot Volumes .............................................................................14
3. LVM Administration Overview ................................................................................17
1. Creating LVM Volumes in a Cluster ................................................................17
2. Logical Volume Creation Overview .................................................................17
3. Growing a File System on a Logical Volume ...................................................18
4. Logical Volume Backup .................................................................................18
5. Logging ........................................................................................................19
4. LVM Administration with CLI Commands ................................................................21
1. Using CLI Commands ...................................................................................21
2. Physical Volume Administration .....................................................................23
2.1. Creating Physical Volumes .................................................................23
2.2. Displaying Physical Volumes ..............................................................24
2.3. Preventing Allocation on a Physical Volume .........................................25
2.4. Resizing a Physical Volume ................................................................25
2.5. Removing Physical Volumes ...............................................................26
3. Volume Group Administration ........................................................................26
3.1. Creating Volume Groups ....................................................................26
3.2. Adding Physical Volumes to a Volume Group .......................................27
3.3. Displaying Volume Groups ..................................................................27
3.4. Scanning Disks for Volume Groups to Build the Cache File ...................28
3.5. Removing Physical Volumes from a Volume Group ..............................29
3.6. Changing the Parameters of a Volume Group ......................................29
3.7. Activating and Deactivating Volume Groups .........................................30
3.8. Removing Volume Groups ..................................................................30
3.9. Splitting a Volume Group ....................................................................30
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