Before you start the FlashCopy process
using the command-line interface (CLI), you must prepare a FlashCopy mapping.
Starting a FlashCopy mapping
creates a point-in-time copy of the data on the source volume and
writes it to the target volume for the mapping.
These steps
help you prepare and start a FlashCopy mapping:
- Issue the prestartfcmap CLI command
to prepare the FlashCopy mapping.
To run the following command, the FlashCopy mapping cannot belong to a consistency
group.
prestartfcmap -restore main1copy
Where main1copy is
the name of the FlashCopy mapping.
This
command specifies the optional restore parameter,
which forces the mapping to be prepared even if the target volume
is being used as a source in another active FlashCopy® mapping.
The mapping enters the preparing state and moves to
the prepared state when it is ready.
- Issue the lsfcmap CLI command to check
the state of the mapping.
Here is an example of the output that is displayed:
lsfcmap -delim :
id:name:source_vdisk_id:source_vdisk_name:target_vdisk_id:
target_vdisk_name:group_id:group_name:status:progress:copy_rate
0:main1copy:0:mainvdisk1:1:bkpvdisk1:::prepared:0:50
- Issue the startfcmap CLI command to
start the FlashCopy mapping.
Here is an example of the CLI command you can issue to start the FlashCopy mapping:
startfcmap -restore main1copy
Where main1copy is the name of the FlashCopy mapping
This
command specifies the optional restore parameter,
which forces the mapping to be started even if the target volume is
being used as a source in another active FlashCopy® mapping.
- Issue the lsfcmapprogress CLI command
with the FlashCopy mapping
name or ID to check the progress of the mapping.
Here is an example of the output that is displayed; the FlashCopy mapping ID 0 is 47% completed.
lsfcmapprogress -delim :
id:progress
0:47
You created a point-in-time copy of the data on a source volume and written that data to a
target volume. The data on the target volume is only recognized by the hosts that are mapped to
it.