Renaming a chunk to a nonexistent device

To rename a chunk to a nonexistent device, specify the new path name, but restore the storage spaces after you install the physical device. This option is useful if you need to rename a chunk and it is convenient to perform a cold restore before you install the new device. When the new chunk device is ready, you can perform a warm restore of a storage space onto it.

You can combine renaming chunks with existing devices and renaming chunks with nonexistent devices in the same rename operation. This example shows how to rename a single chunk to a nonexistent device name.

The following table lists example values for the chunks used in this example.

Storage space	Old chunk path	Old offset	New chunk path	New offset
sbspace1	/chunk3	0	/chunk3N	0

To rename a chunk to a nonexistent device:

Rename the chunk with the following command: onbar -r -rename -p /chunk3 -o 0 -n /chunk3N -o 0

When you see the following prompt, enter y to continue:

The chunk /chunk3N does not exist. If you continue, the 
restore may fail later for the dbspace which contains this chunk. 
Continue without creating this chunk? (y/n)

The chunk /chunk3 is renamed to /chunk3N, but the data is not yet restored to /chunk3N.

Perform a level-0 archive.
Add the physical device for /chunk3N.
Perform a warm restore of sbspace1 with the onbar -r sbspace1 command.
Perform a level-0 archive.