VERITAS Volume Manager 4.1 Troubleshooting Guide

Backing Up and Restoring Disk Group Conﬁgurations

Restoring a Disk Group Conﬁguration

Chapter 562

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 44xxxxxxxxxxxxxxxx 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}

To commit the changes that are required to restore the disk group conﬁguration, use the

following command:

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

If no disk headers are reinstalled, the conﬁguration copies in the disks’ private regions are

updated from the latest binary copy of the conﬁguration that was saved for the disk group.