VERITAS Volume Manager 4.1 Migration Guide

Converting LVM to VxVM
Restoring the LVM Volume Group Configuration
Chapter 214
• rollback using vxvmconvert
Use rollback only if the VxVM configuration has not changed since the conversion. This
method restores the LVM configuration without the need for user data restoration. See
“Rollback to LVM Using vxvmconvert” on page 17
for details on using this method.
• restore user data using vgrestore and frecover
This method is a full LVM restoration which is used to restore your user data from backup
when the VxVM configuration has changed since the conversion was made. First of all,
this method restores the original LVM configuration information (vgrestore), and then
restores the original user data from the backup that was made before the conversion was
done (frecover). See
“Full LVM Restoration” on page 18
for more information on using this method.
NOTE Restoring user data using the vgrestore and frecover method will result in the
loss of all user data changes made since the conversion, and the loss of all new
volumes created since the conversion.
In other words, this method of restoring data will take you back to exactly
where you were before the conversion was done.
However, if no new volumes have been created, and if none of the existing
volumes have been resized, you can use the vxvmconvert rollback option to
restore the original LVM configuration. If you use this method, any user data
changes made since the conversion will be retained, and you will not need to
carry out a user level data restore (frecover).
The name changes that vxvmconvert makes as part of the conversion are
managed by rollback, and do not count as VxVM configuration changes for the
purposes of choosing a restoration method.
The name changes that vxvmconvert makes as part of the conversion are
managed by rollback, and do not count as VxVM configuration changes for the
purposes of choosing a restoration method.