Veritas Volume Manager 4.1 Troubleshooting Guide (HP-UX 11i v3, February 2007)

Chapter 5, Backing Up and Restoring Disk Group Configurations

Restoring a Disk Group Configuration

To back up a disk group manually, use this command:

# /etc/vx/bin/vxconfigbackup diskgroup

To back up all disk groups, use this version of the command:

# /etc/vx/bin/vxconfigbackup

For more information, see the vxconfigbackup(1M) manual page.

Restoring a Disk Group Configuration

You can use the vxconfigrestore utility to restore or recreate a disk group from its

configuration backup. The restoration process has two stages: precommit and commit. In

the precommit stage, you can examine the configuration of the disk group that would be

restored from the backup. The actual disk group configuration is not permanently

restored until you choose to commit the changes.

Note None of the disks or VxVM objects in the disk group may be open or in use by any

application while the restoration is being performed.

You can choose whether or not any corrupted disk headers are to be reinstalled at this

stage. If any of the disks’ private region headers are invalid, restoration may not be

possible without reinstalling the headers for the affected disks.

The following command performs a precommit analysis of the state of the disk group

configuration, and reinstalls the disk headers where these have become corrupted:

# /etc/vx/bin/vxconfigrestore -p [-l directory] {diskgroup | dgid}

The disk group can be specified either by name or by ID.

The -l option allows you to specify a directory for the location of the backup

configuration files other than the default location, /etc/vx/cbr/bk. See “Backing Up a

Disk Group Configuration” on page 44 for details.

To specify that the disk headers are not to be reinstalled, use this form of the command:

# /etc/vx/bin/vxconfigrestore -n [-l directory] {diskgroup | dgid}

At the precommit stage, you can use the vxprint command to examine the configuration

that the restored disk group will have. You can choose to proceed to commit the changes

and restore the disk group configuration. Alternatively, you can cancel the restoration

before any permanent changes have been made.

To abandon restoration at the precommit stage, use this command:

# /etc/vx/bin/vxconfigrestore -d [-l directory] {diskgroup | dgid}