Volume Group Reconfiguration

LifeKeeper LVM Hierarchy Creation and Administration

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