Installation guide

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13.6. RAID Support in the Installer ..................................................................................... 89
13.7. Configuring RAID Sets .............................................................................................. 89
13.8. Advanced RAID Device Creation ............................................................................... 90
14. Swap Space 91
14.1. What is Swap Space? .............................................................................................. 91
14.2. Adding Swap Space ................................................................................................. 91
14.2.1. Extending Swap on an LVM2 Logical Volume .................................................. 92
14.2.2. Creating an LVM2 Logical Volume for Swap .................................................... 92
14.2.3. Creating a Swap File ..................................................................................... 92
14.3. Removing Swap Space ............................................................................................. 93
14.3.1. Reducing Swap on an LVM2 Logical Volume ................................................... 93
14.3.2. Removing an LVM2 Logical Volume for Swap .................................................. 94
14.3.3. Removing a Swap File ................................................................................... 94
14.4. Moving Swap Space ................................................................................................. 94
15. Disk Quotas 95
15.1. Configuring Disk Quotas ........................................................................................... 95
15.1.1. Enabling Quotas ............................................................................................ 95
15.1.2. Remounting the File Systems ......................................................................... 95
15.1.3. Creating the Quota Database Files ................................................................. 96
15.1.4. Assigning Quotas per User ............................................................................. 97
15.1.5. Assigning Quotas per Group .......................................................................... 97
15.1.6. Setting the Grace Period for Soft Limits .......................................................... 98
15.2. Managing Disk Quotas .............................................................................................. 98
15.2.1. Enabling and Disabling .................................................................................. 98
15.2.2. Reporting on Disk Quotas .............................................................................. 99
15.2.3. Keeping Quotas Accurate ............................................................................... 99
15.3. References ............................................................................................................. 100
16. Access Control Lists 101
16.1. Mounting File Systems ............................................................................................ 101
16.1.1. NFS ............................................................................................................ 101
16.2. Setting Access ACLs .............................................................................................. 101
16.3. Setting Default ACLs .............................................................................................. 102
16.4. Retrieving ACLs ..................................................................................................... 102
16.5. Archiving File Systems With ACLs ........................................................................... 103
16.6. Compatibility with Older Systems ............................................................................. 104
16.7. References ............................................................................................................. 104
17. Write Barriers 105
17.1. Importance of Write Barriers .................................................................................... 105
17.2. Enabling/Disabling Write Barriers ............................................................................. 105
17.3. Write Barrier Considerations .................................................................................... 106
18. Storage I/O Alignment and Size 109
18.1. Parameters for Storage Access ............................................................................... 109
18.2. Userspace Access .................................................................................................. 110
18.3. Standards ............................................................................................................... 110
18.4. Stacking I/O Parameters ......................................................................................... 111
18.5. Logical Volume Manager ......................................................................................... 112
18.6. Partition and File System Tools ............................................................................... 112
19. Setting Up A Remote Diskless System 115
19.1. Configuring a tftp Service for Diskless Clients ........................................................... 115
19.2. Configuring DHCP for Diskless Clients ..................................................................... 115
19.3. Configuring an Exported File System for Diskless Clients .......................................... 116