To create a snapshot of the container MyCT, do the following:
# prlctl snapshot MyCT
...
The snapshot with ID {08ddd014-7d57-4b19-9a82-15940f38e7f0} has been successfully \
created.
A newly created snapshot is saved to the /vz/private/<UUID>/dump/<snapshot_ID> file, where <UUID> is the container UUID and <snapshot_ID> is a snapshot ID. In the example above, the snapshot with ID {08ddd014-7d57-4b19-9a82-15940f38e7f0} is saved to the file /vz/private/26bc47f6-353f-444b-bc35-b634a88dbbcc/dump/{08ddd014-7d57-4b19-9a82-15940f38e7f0}.
# ls /vz/private/26bc47f6-353f-444b-bc35-b634a88dbbcc/dump
{08ddd014-7d57-4b19-9a82-15940f38e7f0}
Snapshot IDs are needed to switch to and delete snapshots.
When creating a snapshot, you can also set its name and description:
# prlctl snapshot MyCT --n Clean_System --d "This snapshot was created right after \
installing Windows XP."
...
The snapshot with ID {e78bb2b8-7a99-4c8b-ab9a-491a47648c44} has been successfully \
created.
The set name and description are stored in the /vz/private/<UUID>/Snapshots.xml file.
