Chapter 7. Volumes 299
copy_id 0
status online
sync yes
auto_delete no
primary yes
...
compressed_copy no
...
Example 7-13 adds a compressed copy with the -autodelete flag set.
Example 7-13   Compressed copy
IBM_Storwize:ITSO:superuser>addvdiskcopy -autodelete -rsize 2 -mdiskgrp 0 -compressed 
UNCOMPRESSED_VOL
Vdisk [9] copy [1] successfully created
Example 7-14 shows the lsvdisk output with another compressed volume (copy 1) and 
volume copy 0 being set to auto_delete yes.
Example 7-14   The lsvdisk command output
IBM_Storwize:ITSO:superuser>lsvdisk UNCOMPRESSED_VOL
id 9
name UNCOMPRESSED_VOL
IO_group_id 0
IO_group_name io_grp0
status online
...
compressed_copy_count 2
...
copy_id 0
status online
sync yes
auto_delete yes
primary yes
...
copy_id 1
status online
sync no
auto_delete no
primary no
...
When copy 1 is synchronized, copy 0 is deleted. You can monitor the progress of volume copy 
synchronization by using the lsvdisksyncprogress command.
7.8.6  Splitting a mirrored volume 
The use of the splitvdiskcopy command creates an independent volume in the specified I/O 
Group from a volume copy of the specified mirrored volume. In effect, the command changes 
a volume with two copies into two independent volumes, each with a single copy.
If the copy that you are splitting is not synchronized, you must use the -force parameter. If 
you are attempting to remove the only synchronized copy of the source volume, the command 
fails. However, you can run the command when either copy of the source volume is offline.