Red Hat GFS 5.2.1 Administrator's Manual page 6

9.7. Direct I/O ......................................................................................................................... 96
9.7.1.
9.7.2. GFS File Attribute............................................................................................. 97
9.7.3. GFS Directory Attribute ................................................................................... 97
9.8. Data Journaling ................................................................................................................ 98
9.8.1. Usage................................................................................................................. 98
9.8.2. Examples........................................................................................................... 99
9.9. Configuring
9.9.1. Mount with
9.9.2. Tune GFS
9.10. Suspending Activity on a File System ......................................................................... 101
9.10.1. Usage............................................................................................................. 101
9.10.2. Examples....................................................................................................... 101
9.11. Displaying Extended GFS Information and Statistics ................................................. 101
9.11.1. Usage............................................................................................................. 102
9.11.2. Examples....................................................................................................... 102
9.12. Repairing a File System ............................................................................................... 102
9.12.1. Usage............................................................................................................. 102
9.12.2. Example ........................................................................................................ 103
9.13. Context-Dependent Path Names .................................................................................. 103
9.13.1. Usage............................................................................................................. 103
9.13.2. Example ........................................................................................................ 104
9.14. Shutting Down a GFS Cluster...................................................................................... 105
9.15. Restarting a GFS Cluster ............................................................................................. 105
10. Using the Fencing System......................................................................................................... 107
10.1. How the Fencing System Works .................................................................................. 107
10.2. Fencing Methods.......................................................................................................... 107
10.2.1. APC MasterSwitch........................................................................................ 108
10.2.2. WTI Network Power Switch......................................................................... 108
10.2.3. Brocade FC Switch ....................................................................................... 109
10.2.4. Vixel FC Switch ............................................................................................ 109
10.2.5. HP RILOE Card............................................................................................ 109
10.2.6. GNBD ........................................................................................................... 110
10.2.7. Fence Notify GNBD ..................................................................................... 110
10.2.8. Manual .......................................................................................................... 110
11. Using GNBD .............................................................................................................................. 113
11.1. Considerations for Using GNBD Multipath ................................................................ 113
11.1.1. Linux Page Caching ...................................................................................... 113
11.1.2. Lock Server Startup ...................................................................................... 113
11.1.3. CCS File Location ........................................................................................ 113
11.1.4. Fencing GNBD Server Nodes....................................................................... 114
11.2. GNBD Driver and Command Usage ........................................................................... 114
11.2.1. Exporting a GNBD from a Server ................................................................ 115
11.2.2. Importing a GNBD on a Client..................................................................... 116
12. Software License ....................................................................................................................... 119
12.1. Overview...................................................................................................................... 119
12.2. Installing a License ...................................................................................................... 119
12.3. Upgrading and Replacing a License ............................................................................ 120
12.3.1. Replacing a License File: Not Changing the Lock Manager........................ 120
12.3.2. Replacing a License File: Changing the Lock Manager............................... 120
12.4. License FAQ................................................................................................................. 121
12.5. Solving License Problems............................................................................................ 121
......................................................................................................... 96
O_DIRECT
Updates ............................................................................................ 99
atime
noatime
Quantum ............................................................................ 100
atime
........................................................................................ 99