EVMS-Users-Guide.pdf

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EVMS User Guide
Christine Lorenz
IBM
Joy Goodreau
IBM
Kylie Smith
IBM
Copyright © 2004 IBM
September 16, 2004
Special Notices
The following terms are registered trademarks of International Business Machines corporation in the United
States and/or other countries: AIX, OS/2, System/390. A full list of U.S. trademarks owned by IBM may be
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This document is provided "AS IS," with no express or implied warranties. Use the information in this
document at your own risk.
License Information
This document may be reproduced or distributed in any form without prior permission provided the copyright
notice is retained on all copies. Modified versions of this document may be freely distributed provided that
they are clearly identified as such, and this copyright is included intact.
EVMS User Guide
Table of Contents
Preface. .................................................................................................................................................................1
Chapter 1. What is EVMS?. ...............................................................................................................................4
1.1. Why choose EVMS?. ........................................................................................................................4
1.2. The EVMS user interfaces. ...............................................................................................................4
1.3. EVMS terminology. ..........................................................................................................................5
1.4. What makes EVMS so flexible?. ......................................................................................................6
1.5. Plug−in layer definitions. ..................................................................................................................6
Chapter 2. Using the EVMS interfaces. ............................................................................................................9
2.1. EVMS GUI. ......................................................................................................................................9
2.1.1. Using context sensitive and action menus. ..............................................................................9
2.1.2. Saving changes. .......................................................................................................................9
2.1.3. Refreshing changes. .................................................................................................................9
2.1.4. Using the GUI "+". ................................................................................................................10
2.1.5. Using the accelerator keys. ....................................................................................................10
2.2. EVMS Ncurses interface. ................................................................................................................11
2.2.1. Navigating through EVMS Ncurses. .....................................................................................12
2.2.2. Saving changes. .....................................................................................................................12
2.3. EVMS Command Line Interprete .. ................................................................................................12
2.3.1. Using the EVMS CLI. ...........................................................................................................13
2.3.2. Notes on commands and command files. ..............................................................................14
Chapter 3. The EVMS log file and error data collection. .............................................................................15
3.1. About the EVMS log file. ...............................................................................................................15
3.2. Log file logging levels. ...................................................................................................................15
3.3. Specifying the logging levels. .........................................................................................................16
Chapter 4. Viewing compatibility volumes after migrating. .........................................................................17
4.1. Using the EVMS GUI. ....................................................................................................................17
4.2. Using Ncurses. ................................................................................................................................18
4.3. Using the CLI. .................................................................................................................................18
Chapter 5. Obtaining interface display details.. .............................................................................................20
5.1. Using the EVMS GUI. ....................................................................................................................20
5.2. Using Ncurses. ................................................................................................................................20
5.3. Using the CLI. .................................................................................................................................20
Chapter 6. Adding and removing a segment manager. .................................................................................22
6.1. When to add a segment manager. ...................................................................................................22
6.2. Types of segment managers. ...........................................................................................................22
6.2.1. DOS Segment Manager. ........................................................................................................22
6.2.2. GUID Partitioning Table (GPT) Segment Manage . .............................................................22
6.2.3. S/390 Segment Manager. ......................................................................................................23
6.2.4. Cluster segment manager. .....................................................................................................23
6.2.5. BSD segment manager. .........................................................................................................24
6.2.6. MAC segment manager. ........................................................................................................24
6.2.7. BBR segment manager. .........................................................................................................24
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EVMS User Guide
Table of Contents
6.3. Adding a segment manager to an existing disk. .............................................................................24
6.4. Adding a segment manager to a new disk. .....................................................................................25
6.5. Example: add a segment manage .. .................................................................................................25
6.5.1. Using the EVMS GUI. ..........................................................................................................25
6.5.2. Using Ncurses.. ......................................................................................................................26
6.5.3. Using the CLI. .......................................................................................................................26
6.6. Removing a segment manager. .......................................................................................................26
6.7. Example: remove a segment manager. ...........................................................................................27
6.7.1. Using the EVMS GUI context sensitive menu. .....................................................................27
6.7.2. Using Ncurses.. ......................................................................................................................27
6.7.3. Using the CLI. .......................................................................................................................27
Chapter 7. Creating segments. .........................................................................................................................28
7.1. When to create a segment. ..............................................................................................................28
7.2. Example: create a segmen.. ............................................................................................................28
7.2.1. Using the EVMS GUI. ..........................................................................................................28
7.2.2. Using Ncurses.. ......................................................................................................................29
7.2.3. Using the CLI. .......................................................................................................................29
Chapter 8. Creating a container. .....................................................................................................................30
8.1. When to create a container. .............................................................................................................30
8.2. Example: create a container. ...........................................................................................................30
8.2.1. Using the EVMS GUI. ..........................................................................................................30
8.2.2. Using Ncurses.. ......................................................................................................................30
8.2.3. Using the CLI. .......................................................................................................................31
Chapter 9. Creating regions. ............................................................................................................................32
9.1. When to create regions.. ..................................................................................................................32
9.2. Example: create a region. ................................................................................................................32
9.2.1. Using the EVMS GUI. ..........................................................................................................32
9.2.2. Using Ncurses.. ......................................................................................................................33
9.2.3. Using the CLI. .......................................................................................................................33
Chapter 10. Creating drive links. ....................................................................................................................34
10.1. What is drive linking?. ..................................................................................................................34
10.2. How drive linking is implemented.. ..............................................................................................34
10.3. Creating a drive link.. ....................................................................................................................34
10.4. Example: create a drive link. ........................................................................................................35
10.4.1. Using the EVMS GUI. ........................................................................................................35
10.4.2. Using Ncurses.. ....................................................................................................................35
10.4.3. Using the CLI. .....................................................................................................................36
10.5. Expanding a drive link. .................................................................................................................36
10.6. Shrinking a drive link. ..................................................................................................................37
10.7. Deleting a drive link.. ....................................................................................................................37
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EVMS User Guide
Table of Contents
Chapter 11. Creating snapshots.. .....................................................................................................................38
11.1. What is a snapshot?. ......................................................................................................................38
11.2. Creating snapshot objects. ............................................................................................................38
11.3. Example: create a snapshot. ..........................................................................................................38
11.3.1. Using the EVMS GUI. ........................................................................................................39
11.3.2. Using Ncurses.. ....................................................................................................................39
11.3.3. Using the CLI. .....................................................................................................................40
11.4. Reinitializing a snapshot. ..............................................................................................................40
11.4.1. Using the EVMS GUI or Ncurses. ......................................................................................40
11.4.2. Using the CLI. .....................................................................................................................41
11.5. Expanding a snapshot. ..................................................................................................................41
11.5.1. Using the EVMS GUI or Ncurses. ......................................................................................41
11.5.2. Using the CLI. .....................................................................................................................42
11.6. Deleting a snapshot. ......................................................................................................................42
11.7. Rolling back a snapshot. ...............................................................................................................42
11.7.1. Using the EVMS GUI or Ncurses. ......................................................................................43
11.7.2. Using the CLI. .....................................................................................................................43
Chapter 12. Creating volumes. ........................................................................................................................44
12.1. When to create a volume.. .............................................................................................................44
12.2. Example: create an EVMS native volume. ...................................................................................44
12.2.1. Using the EVMS GUI. ........................................................................................................44
12.2.2. Using Ncurses.. ....................................................................................................................45
12.2.3. Using the CLI. .....................................................................................................................45
12.3. Example: create a compatibility volume.. .....................................................................................45
12.3.1. Using the GUI. ....................................................................................................................45
12.3.2. Using Ncurses.. ....................................................................................................................46
12.3.3. Using the CLI. .....................................................................................................................46
Chapter 13. FSIMs and file system operations. .............................................................................................47
13.1. The FSIMs supported by EVMS. .................................................................................................47
13.1.1. JFS. ......................................................................................................................................47
13.1.2. XFS. .....................................................................................................................................47
13.1.3. ReiserFS. .............................................................................................................................47
13.1.4. Ext2/3. .................................................................................................................................48
13.1.5. SWAPFS. ............................................................................................................................48
13.1.6. OpenGFS. ............................................................................................................................48
13.1.7. NTFS. ..................................................................................................................................48
13.2. Example: add a file system to a volume. ......................................................................................48
13.2.1. Using the EVMS GUI. ........................................................................................................49
13.2.2. Using Ncurses.. ....................................................................................................................49
13.2.3. Using the CLI. .....................................................................................................................49
13.3. Example: check a file system.. ......................................................................................................50
13.3.1. Using the EVMS GUI. ........................................................................................................50
13.3.2. Using Ncurses.. ....................................................................................................................50
13.3.3. Using the CLI. .....................................................................................................................51
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