User manual

LifeKeeper LVM Hierarchy Creation and Administration
Volume Group Reconfiguration
One of the primary benefits of using a logical volume manager is the ability to dynamically resize
logical volumes as storage requirements change. Because this may involve adding or deleting
physical partitions or disks from an LVM volume group definition, the LVM Recovery Kit
includes a mechanism for modifying an existing resource hierarchy to reflect such a change.
All volume group, logical volume, and file system reconfiguration should be performed outside
of LifeKeeper prior to modifying the LifeKeeper hierarchy to reflect the changes. Refer to the
LVM HowTo document referenced in the
Documentation and References section for information
about how this is done. If any of the steps require you to unmount or unconfigure a resource that
is being protected by LifeKeeper, be sure to use the LifeKeeper GUI to do so, using the Out of
Service operation.
To update a LifeKeeper hierarchy following these changes, first access the Resource Properties
dialog for the modified volume group, either by right-clicking on the active volume group
resource and selecting Properties, or by using the Edit > Resource > Properties menu selection
and selecting the appropriate volume group resource in the Select Resource field. The resulting
Resource Properties dialog should look like the one pictured in Figure 4 below, including the
Resource Configuration button near the bottom.
Figure 4: LVM volume group Resource Properties dialog
12 LVM Recovery Kit Administration Guide