Table of Contents
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Introduction .............................................................................................................. vii
1. Audience ...................................................................................................... vii
2. Related Documentation ................................................................................. vii
3. Document Conventions ................................................................................ viii
4. Send in Your Feedback .................................................................................. ix
5. Recommended References .............................................................................x
1. GFS Overview ....................................................................................................... 1
1. New and Changed Features ........................................................................... 1
2. Performance, Scalability, and Economy ........................................................... 2
2.1. Superior Performance and Scalability ................................................... 2
2.2. Performance, Scalability, Moderate Price .............................................. 3
2.3. Economy and Performance .................................................................. 4
3. GFS Functions ............................................................................................... 5
4. GFS Software Subsystems ............................................................................. 6
5. Before Setting Up GFS ................................................................................... 7
2. System Requirements ............................................................................................ 9
1. Platform Requirements ................................................................................... 9
2. Red Hat Cluster Suite ..................................................................................... 9
3. Fencing ......................................................................................................... 9
4. Fibre Channel Storage Network .....................................................................10
5. Fibre Channel Storage Devices ......................................................................10
6. Network Power Switches ...............................................................................11
7. Console Access ............................................................................................11
8. Installing GFS ...............................................................................................11
3. Getting Started .....................................................................................................13
1. Prerequisite Tasks ........................................................................................13
2. Initial Setup Tasks .........................................................................................13
4. Managing GFS .....................................................................................................15
1. Making a File System ....................................................................................15
2. Mounting a File System .................................................................................18
3. Unmounting a File System .............................................................................20
4. GFS Quota Management ...............................................................................21
4.1. Setting Quotas ...................................................................................21
4.2. Displaying Quota Limits and Usage .....................................................23
4.3. Synchronizing Quotas ........................................................................24
4.4. Disabling/Enabling Quota Enforcement ................................................26
4.5. Disabling/Enabling Quota Accounting ..................................................27
5. Growing a File System ..................................................................................28
6. Adding Journals to a File System ...................................................................29
7. Direct I/O ......................................................................................................32
7.1.
7.2. GFS File Attribute ...............................................................................32
7.3. GFS Directory Attribute .......................................................................33
8. Data Journaling .............................................................................................34
...........................................................................................32
Updates ............................................................................35
...........................................................................35
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