Administrator's Guide

Exporting and Importing EVFS Volumes.............................................................................................91
Exporting an EVFS Volume.............................................................................................................91
Importing an EVFS Volume.............................................................................................................93
6 Managing Data on EVFS Volumes.............................................................................95
Limitations and Known Problems When Using EVFS with Volume Managers and File Systems......96
Creating a New EVFS Volume Overwrites Existing Data...............................................................96
vxresize –F Might Cause Data Loss or Corruption.........................................................................96
Workaround...............................................................................................................................96
Renaming VxVM Volumes with EVFS Enabled Makes the Volume Unusable..............................96
Workaround...............................................................................................................................96
Resizing EVFS Volumes and File Systems............................................................................................97
LVM Example: Increasing Volume and File System Sizes..............................................................97
Correct........................................................................................................................................97
Incorrect......................................................................................................................................98
LVM Example: Reducing Volume and File System Sizes................................................................98
Correct........................................................................................................................................98
Incorrect......................................................................................................................................98
VxVM Example: Increasing Volume and File System Sizes............................................................99
Correct........................................................................................................................................99
Incorrect......................................................................................................................................99
VxVM Example: Reducing Volume and File System Sizes.............................................................99
Correct........................................................................................................................................99
Incorrect....................................................................................................................................100
7 Backing Up and Restoring Data on EVFS Volumes................................................101
Backing Up EVFS Volumes.................................................................................................................102
Backups Using LVM Mirrored Volumes.......................................................................................105
Creating Encrypted Backup Media on a Non-EVFS Device (LVM Mirrored Volumes) .........105
Example...............................................................................................................................106
Creating Encrypted Backup Media on a Second EVFS Volume Using a Block Device Utility
(LVM Mirrored Volumes).........................................................................................................107
Example...............................................................................................................................108
Creating Encrypted Backup Media on a Second EVFS Volume Using a File Utility (LVM
Mirrored Volumes)...................................................................................................................109
Example...............................................................................................................................110
Creating Cleartext Backup Media (LVM Mirrored Volumes)..................................................111
Example: Block Device Utility............................................................................................111
Example: File Utility............................................................................................................111
Backups Using VxVM Mirrored Volumes.....................................................................................112
Creating Encrypted Backup Media on a Non-EVFS Device (VxVM Mirrored Volumes).......112
Example...............................................................................................................................113
Creating Encrypted Backup Media on a Second EVFS Volume Using a Block Device Utility
(VxVM Mirrored Volumes)......................................................................................................115
Example...............................................................................................................................116
Creating Encrypted Backup Media on a Second EVFS Volume Using a File Utility (VxVM
Mirrored Volumes)...................................................................................................................117
Example...............................................................................................................................118
Creating Cleartext Backup Media (VxVM Mirrored Volumes)...............................................120
Example: Block Device Utility..................................................................................................120
Example: File Utility.................................................................................................................120
Backups Using Nonmirrored Volumes.........................................................................................121
Creating Encrypted Backup Media to a Non-EVFS Device (Nonmirrored Volumes).............121
6 Table of Contents