Storage Analysis: Name the Snapshot LV

Before a risky migration someone took snapshots of several logical volumes. You need the snapshot of one origin so you can roll it back if needed. The output of lvs is at /root/storage/lvs.txt, and `/root/storage/task.txt` names the origin LV — the names differ per session.

Record the name of the snapshot whose Origin is that LV to /root/answers/snap_name.txt. A snapshot's Attr starts with s; an origin's starts with o.