A method for copying a logical volume in a data storage system, including
forming a first logical volume having one or more logical partitions and
storing data at a physical location associated with the one or more
logical partitions. The method further includes receiving a first command
to copy the first logical volume to a second logical volume, and
responsively to the first command, assigning the one or more logical
partitions to a meta-volume and linking the meta-volume to the first and
second logical volumes. The method also includes receiving a second
command to access the data in at least one of the first and second
logical volumes, responsively to the second command, using a partition
descriptor record associated with the meta-volume to identify the
physical location, and providing access to the data at the physical
location.