Specifications
Extending a Hierarchy to a Disaster Recovery System
Note: Depending upon the hierarchy being extended, LifeKeeper will display a series of
information boxes showingthe Resource Tags to be extended, some of which cannot be
edited.
4. Click Next to launch the Extend Resource Hierarchy configuration task.
The next section lists the steps required to complete the extension of a DataKeeper resource to
another server.
1. After you have been notified that your pre-extend script has executed successfully, you will be
prompted for the following information:
Field Tips
Mount Point
Enter the name of the file system mount point on the target server. (This dialog
will not appear if there is no LifeKeeper-protected filesystem associated with the
DataKeeper Resource.)
Root Tag
Select or enter the Root Tag. This is a unique name for the filesystem resource
instance on the target server. (This dialog will not appear if there is no
LifeKeeper-protected filesystem associated with the DataKeeper Resource.)
Target Disk
or Partition
Select the disk or partition where the replicated file system will be located on the
target server.
The list of disks or partitions in the drop down box contains all the available
disks or partitions that are not:
l already mounted
l swap disks or partitions
l LifeKeeper-protected disks or partitions
The drop down list will also filter out special disks or partitions, for example, root
(/), boot (/boot), /proc, floppy and cdrom.
Note: The size of the target disk or partition must be greater than or equal to
that of the source disk or partition.
DataKeeper
Resource
Tag
Select or enter the DataKeeper Resource Tag name.
Bitmap File
Select or edit the name of the bitmap file used for intent logging. If you choose
None, then an intent log will not be used, and every resynchronization will be a
full resync instead of a partial resync.
Important: The bitmap file should not reside on a btrfs filesystem. Placing data
replication bitmap files on a btrfs filesystem will result in an "invalid argument"
error when LifeKeeper tries to configure the mirror. The default location for the
bitmap file is under /opt/LifeKeeper. This default location should be
changed if /opt/LifeKeeper resides on a btrfs filesystem.
322Multi-Site Cluster